**Full Stack Developer (Node.js & React.js)**

Long-Term Contract (12 Months or More, with Possible Extension)

100 % Remote

**Need candidates on W2**

We are seeking a **Node.js Developer** with **React.js** experience t with **8+ years of overall experience** in software development to design, develop, and maintain scalable web applications using Node.js and React.js.

The ideal candidate should have strong expertise in RESTful API development, front-end integration, database management, system architecture, and performance optimization, with a proven track record of writing clean, scalable, and maintainable code.

Full Stack Engineer

This role involves developing a comprehensive web-based platform designed to streamline the process of booking and managing tutoring sessions. The platform aims to eliminate the inefficiencies of fragmented scheduling by providing a centralized, user-friendly solution for both students and tutors. Students will be able to easily browse tutors, view their subjects, availability, and pricing, and book sessions directly. Tutors will have the ability to create detailed profiles, set their teaching subjects, manage availability, and oversee their session schedules. The system will automate appointment scheduling, confirmations, cancellations, and notifications, ensuring a seamless experience for all users. The ideal candidate will be responsible for both frontend and backend development, ensuring robust user authentication, efficient scheduling logic, and reliable data management. Integration with third-party services such as email, calendar, and online meeting tools may be required to enhance the platform’s functionality and user experience. **Deliverables**

*   Develop a responsive web application for students and tutors
*   Implement user authentication and secure profile management
*   Build scheduling features for session booking, confirmations, and cancellations
*   Create tutor profile management tools, including subject and availability settings
*   Integrate notification systems for reminders and session updates
*   Ensure seamless integration with third-party services (e.g., email, calendar, meeting tools)
*   Design a scalable architecture to support future feature expansion

**Requirements**

*   Proven experience in full stack web development (frontend and backend)
*   Proficiency with modern web frameworks (e.g., React, Angular, or Vue for frontend; Node.js, Django, or similar for backend)
*   Strong understanding of user authentication, data security, and privacy best practices
*   Experience with scheduling logic and calendar integrations
*   Familiarity with RESTful APIs and third-party service integrations
*   Ability to design intuitive, user-centric interfaces
*   Excellent problem-solving and communication skills
*   Availability to deliver a reliable MVP within agreed timelines
*   Experience with cloud hosting and deployment is a plus

**About Twine** Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally. **Our Mission** Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.

Full Stack Engineer – Tutoring Platform

**THE JOB**

VerifyYou is building infrastructure that keeps the internet human. Co-founded by Reddit’s former CTO, Marty Weiner, we’re focused on solving identity online and enabling platforms to stop bots and fake accounts.

We’re hiring a full-stack engineer (backend-leaning, 2-5+ years) to help architect and scale the systems behind our verification layer, with a strong focus on ML-driven signal pipelines and production data systems.

**WHAT YOU’LL DO**

• Design and evolve signal pipelines that distinguish real human participation from automation, including liveness, uniqueness, and behavioral authenticity. Build modular detection systems tuned to specific threat classes such as replay attacks, synthetic identity farms, and coordinated abuse.

• Build and scale Python-based services that power our verification engine. Architect privacy-preserving data flows, event-driven ingestion pipelines, and storage systems that handle sensitive biometric and behavioral data responsibly.

• Develop internal evaluation frameworks to measure false positives and false negatives, test bypass resistance, and support continuous red-team iteration against evolving attack patterns.

• Deploy and operate services on GCP with strong observability, reliability, and security practices as we scale toward compliance and platform-grade resilience.

**OUR STACK**

Backend: Python (Flask, FastAPI)

Data & Storage: Firestore, event-driven pipelines (Pub/Sub)

Infrastructure: GCP, containerized services

Frontend: React + TypeScript

Mobile: React Native, some Swift/Kotlin

Signal & ML Systems: training data management, Milvus vector stores, model integration, evaluation, and performance monitoring

**REQUIREMENTS**

• 2–5+ years of professional software development experience.

• Proficiency in at least one backend language (we use Python) with a solid understanding of REST/gRPC APIs, database design, authentication, and authorization patterns.

• Experience with relational databases, including data modeling, migrations, and query optimization.

• Working knowledge of frontend frameworks (React, TypeScript, or similar) sufficient to contribute across the stack.

• Familiarity with cloud infrastructure, ideally GCP.

• Strong CS fundamentals: data structures, algorithms, system design, and networking basics.

• Hands-on exposure to data pipelines, ML model integration, or model evaluation in production systems, including training workflows, feature stores, monitoring, or experimentation frameworks.

**NICE TO HAVE**

• Experience with identity, authentication, or security-focused systems.

• Familiarity with biometric verification, face recognition, or liveness detection technologies.

• Experience supporting ML systems in production, including data pipelines, feature engineering workflows, model deployment hooks, or performance monitoring.

• Background in privacy-preserving architectures or cryptographic protocols.

• Experience with CI/CD pipelines, infrastructure-as-code, and observability tooling.

• Some web or mobile frontend development experience.

**WHY VERIFYYOU**

The internet has evolved into critical infrastructure, but its trust model hasn’t kept pace. AI has made synthetic participation trivial, and legacy solutions like CAPTCHAs and phone verification are either fragile or invasive. VerifyYou is building verification infrastructure that proves humanness while keeping personal data private.

You’ll own and ship major product components with real autonomy, collaborate directly with founders and senior technical leadership, and receive competitive base pay plus meaningful equity.

**INTERESTED?**

Apply on LinkedIn or reach out to hiring@verifyyou.io with your CV or resume and a brief cover letter.

Full-Stack Software Developer

**Building the Future of Crypto** Our Krakenites are a world-class team with crypto conviction, united by our desire to discover and unlock the potential of crypto and blockchain technology. **What makes us different?** Kraken is a mission-focused company rooted in crypto values. As a Krakenite, you’ll join us on our mission to accelerate the global adoption of crypto, so that everyone can achieve financial freedom and inclusion. For over a decade, Kraken’s focus on our mission and crypto ethos has attracted many of the most talented crypto experts in the world. Before you apply, please read the Kraken Culture page to learn more about our internal culture, values, and mission. We also expect candidates to familiarize themselves with the Kraken app. Learn how to create a Kraken account here. As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Krakenites are industry pioneers who develop premium crypto products for experienced traders, institutions, and newcomers to the space. Kraken is committed to industry-leading security, crypto education, and world-class client support through our products like Kraken Pro, Desktop, Wallet, and Kraken Futures. **Become a Krakenite and build the future of crypto!Proof of workThe team** The Analysis and Experimentation team is responsible for building and maintaining a scalable, well‑governed analytics and experimentation ecosystem that enables Kraken’s product and platform teams to make confident, data‑driven decisions. Our mission is to ensure that product data and experimental results are accurate, reliable, and actionable, forming a trusted foundation for learning, iteration, and decision‑making across the company. We work closely with Product, Engineering, Data Engineering, and Analytics to define event standards, improve data quality, and operate Kraken’s experimentation program end‑to‑end. This includes instrumentation, metric definitions, experiment design support, and the reliability of data used to evaluate product changes. Our focus is on creating a transparent, maintainable, and scalable data foundation that allows teams to move fast without compromising rigor. As a Frontend Engineer on the Analysis and Experimentation team, you will play a central role in powering Kraken’s experimentation program. You will own and evolve the frontend foundations that enable high‑quality experiment instrumentation, consistent metric collection, and trustworthy analysis. Your work will directly impact how product teams design experiments, measure outcomes, and learn from user behavior. **The opportunity**

*   Implement high-impact experiments and increase the throughput of the experimentation program to directly drive revenue
*   Support Kraken’s experimentation platform by enabling reliable exposure logging, metric collection, and experiment guardrails on the frontend
*   Partner with Data Engineering and Analytics to ensure experimental data aligns with canonical definitions and supports statistically sound analysis
*   Implement validation, monitoring, and alerting to proactively detect issues in experiment and product event data
*   Document and evangelize best practices for experimentation and analytics implementation, creating clear guidance for product and engineering teams
*   Collaborate with product teams to support experiment design needs, including metric feasibility, instrumentation tradeoffs, and implementation patterns
*   Improve and simplify event data flows to reduce redundancy, improve transparency, and lower long‑term maintenance costs
*   Contribute to the evolution of Kraken’s experimentation frameworks, enabling faster iteration while preserving analytical rigor

**Skills You Should HODL**

*   5+ years of experience in frontend development with strong expertise in React.js, React Native and TypeScript
*   Strong understanding of frontend data instrumentation, event modeling, and client‑side data flows
*   Experience supporting experimentation or A/B testing systems, including exposure tracking and metric instrumentation
*   Proven ability to debug and resolve data quality issues across complex frontend applications
*   Experience collaborating across product, engineering, and data teams to deliver shared platforms or standards
*   Clear written and verbal communication skills, especially around technical tradeoffs and data correctness

**Nice to haves**

*   Familiarity with experimentation methodologies, statistical concepts, and common pitfalls in experiment analysis
*   Experience with analytics or experimentation tools (e.g., internal platforms, homegrown frameworks, or third‑party solutions)
*   Hands‑on experience with frontend testing frameworks and modern build pipelines
*   Exposure to large‑scale analytics or experimentation infrastructure
*   Understanding of cryptocurrency, blockchain technology, and decentralized applications

_Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis._ _Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution._ _We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance._ Kraken is powered by people from around the world and we celebrate all Krakenites for their diverse talents, backgrounds, contributions and unique perspectives. We hire strictly based on merit, meaning we seek out the candidates with the right abilities, knowledge, and skills considered the most suitable for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto! We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. **These assessments are designed to evaluate competencies relevant to the role and are applied consistently across candidates for similar positions.** Assessment results are considered alongside other **relevant** information, **such as experience and interviews,** and are not the sole basis for any employment decision. As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. **Stay in the know** Follow us on Twitter Learn on the Kraken Blog Connect on LinkedIn Candidate Privacy Notice

Senior Software Engineer - Frontend (React/React Native) - Experimentation & Data

Job Description: **Type of Requisition:** Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able To Obtain: None Public Trust/Other Required: None Job Family: Software Engineering Skills: **Job Qualifications:** Cloud Computing, JavaScript, MySQL Certifications: None Experience: 5 + years of related experience US Citizenship Required: No Job Description: Transform technology into opportunity as a **Full Stack Developer**. You will be responsible for designing, building, and deploying enterprise-grade applications that integrate AI, data services, and people–AI teaming workflows across the company. **MEANINGFUL WORK AND PERSONAL IMPACT** As a **Full Stack Developer**, the work you’ll do at GDIT will be impactful to the mission.

*   Design, develop, and maintain full stack enterprise applications and integration layers connecting data and model services, AI agents, and people–AI teaming workflows
*   Responsibly use AI tools daily in the software development lifecycle, from design and coding to testing and deployment, to improve productivity, quality, and innovation
*   Implement DevOps, CI/CD, and observability practices to ensure reliability, performance, and continuous delivery in production-grade cloud environments
*   Collaborate with cross-functional teams, including business stakeholders, data and AI engineers, and project managers to translate business requirements into intuitive, AI-enabled applications
*   Mentor and provide technical guidance to other Developers; Foster a culture of continuous learning and improvement

WHAT YOU’LL NEED TO SUCCEED Bring your engineering expertise along with a drive for innovation to GDIT. The **Full Stack Developer** must have:

*   Education: Bachelor’s Degree in Computer Science, Computer Engineering, Software Engineering, or a related field  
*   Experience: 5+ years of experience in full stack development, with a proven record of developing and deploying enterprise-scale systems
*   Security clearance level: None
*   Role requirements: Proficiency in programming languages such as JavaScript/TypeScript or Python, and front-end frameworks like React, Next.js, or Angular. Strong understanding of database technologies, such as SQL, NoSQL, and vector database. Proficiency in back-end development with Node.js, Python FastAPI, or similar. Experience in leveraging and validating AI-generated content in the software development lifecycle. Experience with cloud computing platforms and services such as Azure (preferred), OCI, AWS, or Google Cloud. Experience with DevOps practices, including containerization, CI/CD, and automated testing. Demonstrated ability to lead other developers. Excellent communication and collaboration skills.
*   Preferred Skills and Abilities: Master’s Degree preferred. Relevant certifications and experience in Agentic AI applications are a plus.
*   Location: Remote
*   US Persons required

**GDIT IS YOUR PLACE** At GDIT, the mission is our purpose, and our people are at the center of everything we do.

*   Growth: AI-powered career tool that identifies career steps and learning opportunities
*   Support: An internal mobility team focused on helping you achieve your career goals
*   Rewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off
*   Flexibility: Full-flex work week to own your priorities at work and at home
*   Community: Award-winning culture of innovation and a military-friendly workplace

**OWN YOUR OPPORTUNITY** Explore a career in software development at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your dedication to advancing innovation. #GDITPriority The likely salary range for this position is $148,750 - $201,250. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: Less than 10% Telecommuting Options: Remote **Work Location:** Any Location / Remote **Additional Work Locations:**Total Rewards At GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. GDIT typically provides new employees with 15 days of paid leave per calendar year to be used for vacations, personal business, and illness and an additional 10 paid holidays per year. Paid leave and paid holidays are prorated based on the employee’s date of hire. The GDIT Paid Family Leave program provides a total of up to 160 hours of paid leave in a rolling 12 month period for eligible employees. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Full Stack Developer

**Who We Are Is What We Do.** Deel is the all-in-one payroll and HR platform for global teams. Our vision is to unlock global opportunity for every person, team, and business. Built for the way the world works today, Deel combines HRIS, payroll, compliance, benefits, performance, and equipment management into one seamless platform. With AI-powered tools and a fully owned payroll infrastructure, Deel supports every worker type in 150+ countries—helping businesses scale smarter, faster, and more compliantly. Among the largest globally distributed companies in the world, our team of 7,000 spans more than 100 countries, speaks 74 languages, and brings a connected and dynamic culture that drives continuous learning and innovation for our customers. **Why should you be part of our success story?** As the fastest-growing Software as a Service (SaaS) company in history, Deel is transforming how global talent connects with world-class companies – breaking down borders that have traditionally limited both hiring and career opportunities. We're not just building software; we're creating the infrastructure for the future of work, enabling a more diverse and inclusive global economy. In 2024 alone, we paid $11.2 billion to workers in nearly 100 currencies and provided healthcare and benefits to workers in 109 countries—ensuring people get paid and protected, no matter where they are. Our momentum is reflected in our achievements and customer satisfaction: CNBC Disruptor 50, Forbes Cloud 100, Deloitte Fast 500, and repeated recognition on Y Combinator’s top companies list – all while maintaining a 4.83 average rating from 15,000 reviews across G2, Trustpilot, Captera, Apple and Google. Your experience at Deel will be a career accelerator. At the forefront of the global work revolution, you'll tackle complex challenges that impact millions of people's working lives. With our momentum—backed by a $17.3 billion valuation and $1 B in Annual Recurring Revenue (ARR) in just over five years—you'll drive meaningful impact while building expertise that makes you a sought-after leader in the transformation of global work. **Summary** We're looking for a versatile **Mobile Software Engineer** to join our mobile team. This role sits at the intersection of native mobile and web, focused on delivering a seamless hybrid experience to our users. Our mobile app uses a WebView to embed parts of our website, and we’ve built a lightweight bridge to connect native functionality with web content. You'll work on both sides native and web to improve the in-app experience, optimize mobile web flows, and integrate native features like push notifications or biometrics where needed. You’ll contribute to both the React Native app and the React web platform, focusing on functionality, UI/UX, and maintainability with a strong emphasis on technical ownership and cross-team collaboration. **Responsibilities**

*   Design and develop robust, user-friendly mobile applications using React Native
*   Work closely with the frontend team to integrate mobile applications with web services and APIs
*   Collaborate with product managers and UI designers to deliver high-quality, responsive user interfaces
*   Ownership mindset with the ability to drive initiatives across boundaries
*   Implement and maintain state management solutions for efficient data flow within mobile applications
*   Ensure the seamless integration of mobile applications with server-side languages, particularly Node.js on the backend
*   Optimize mobile applications for performance, responsiveness, and scalability
*   Stay updated with the latest trends and advancements in mobile development and contribute innovative ideas to the team

**Qualifications**

*   5+ years of experience as a Software Engineer, with 3+ years of experience with React and React Native development
*   Expert in React, TypeScript, and state management tools
*   Proven track record deploying apps on app stores
*   Solid understanding of WebView behavior and native-web communication
*   Strong understanding of mobile apps and delivering high-quality software solutions
*   Excellent problem-solving, debugging, and communication skills
*   Ability to collaborate with cross-functional teams and adapt to new technologies
*   Experience with Swift, Java, or OTA is a plus
*   Experience writing unit tests with React Native Testing Library and Vitest
*   Experience with end-to-end testing using Detox

**Total Rewards** Our workforce deserves fair and competitive pay that meets them where they are. With scalable benefits, rewards, and perks, our total rewards programs reflect our commitment to inclusivity and access for all. **Some things you’ll enjoy**

*   Stock grant opportunities dependent on your role, employment status and location
*   Additional perks and benefits based on your employment status and country
*   The flexibility of remote work, including optional WeWork access

At Deel, we’re an equal-opportunity employer that values diversity and positively encourage applications from suitably qualified and eligible candidates regardless of race, religion, sex, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, pregnancy or maternity or other applicable legally protected characteristics. _Unless otherwise agreed, we will communicate with job applicants using Deel-specific emails, which include @__deel.com_ _and other acquired company emails like @__payspace.com_ _and @__paygroup.com__. You can view the most up-to-date job listings at Deel by visiting_ _our careers page__._ Deel is an equal-opportunity employer and is committed to cultivating a diverse and inclusive workplace that reflects different abilities, backgrounds, beliefs, experiences, identities and perspectives. Deel will provide accommodations on request throughout the recruitment, selection and assessment process for applicants with disabilities. If you require accommodations, please inform our Talent Acquisition Team via this link and a team member will be in touch to ensure your equal participation. If you have difficulty accessing the form, please email at recruiting@deel.com. As part of our hiring process, we primarily rely on interviews and role-related assessments. In limited cases, we may also consider informal background information relevant to the role, in line with our privacy and fairness obligations. This application process may utilise Automated Employment Decision Tools (AEDT) and AI systems to assist in evaluating candidates based on experience level, technical skills and qualifications. As a fully remote company, we also utilise AI-powered deepfake and fraud detection technologies to verify the authenticity of candidate identities and interactions during assessments and interviews. This processing is conducted in compliance with applicable Data Protection, AI Governance and Labour Laws. We ensure human oversight is maintained in all final hiring decisions. Your personal data is not used to train AI models. For more information on how we process your personal data, please see our Privacy Policy.

*   For NYC Residents: In accordance with NYC Local Law 144, an independent bias audit has been conducted on AEDT; results are available at Ashby, Covey.

Mobile Engineer

Job description

🚀 We’re Hiring: Founding Full-Stack Software Engineers (Equity Role – Immediate Start)

📍 Remote (with occasional travel to London)

📩 Apply via: people@atyourtime.com

– Subject: “Developers – \[Your Name\]”

At Atyourtime Technology, we’re on a mission to redefine food delivery. Our patented Tag & Scan platform ensures every order is tamper-proof, traceable, and transparent—delivering not just meals, but peace of mind.

We’re preparing to launch to market by the end of this quarter and are assembling our founding engineering team. This is an equity-only role for now, with a clear transition to salary as we hit revenue milestones or secure investment. We need people who can start immediately and want to build something that matters.

🔍 What We’re Looking For

Hands-on full-stack engineers with strong skills across frontend, backend, and mobile, plus an eye for scalable architecture.

🧱 Our Core Stack

*   React Native (Mobile – must-have)
*   React JS / AngularJS (Frontend)
*   ASP.NET C# (Backend)
*   PostgreSQL (Database)
*   Swift (iOS)
*   AWS (EC2, IAM, Cognito, S3, SQS/SNS)
*   CI/CD, DevOps, Linux fundamentals

**✅ Key Responsibilities**

*   Build & refine mobile apps (React Native) and web interfaces (React/Angular)
*   Design scalable backends in ASP.NET C# with RESTful APIs
*   Model data in PostgreSQL and ensure efficient performance
*   Implement CI/CD pipelines, monitor uptime, and manage AWS environments
*   Deliver a secure, high-performing product experience end to end

**🌟 Why Join Us?**

*   Equity from day one in an IP-backed venture
*   Shape a patented product at MVP → scale stage
*   Remote-first culture, high autonomy, high impact
*   Clear pathway to a salaried leadership role as we grow

**If you’re hungry to build, ready to hustle, and want to own part of the journey, we’d love to talk.👉 Apply now: people@atyourtime.com(Subject:** _Developers – \[Your Name\]_)

*   #FoodTech #Innovation #Startups #EquityRole #ReactNative #FullStack #AWS #Atyourtime #SoftwareEngineering

Lead Software Engineer

**Building the Future of Crypto** Our Krakenites are a world-class team with crypto conviction, united by our desire to discover and unlock the potential of crypto and blockchain technology. **What makes us different?** Kraken is a mission-focused company rooted in crypto values. As a Krakenite, you’ll join us on our mission to accelerate the global adoption of crypto, so that everyone can achieve financial freedom and inclusion. For over a decade, Kraken’s focus on our mission and crypto ethos has attracted many of the most talented crypto experts in the world. Before you apply, please read the Kraken Culture page to learn more about our internal culture, values, and mission. We also expect candidates to familiarize themselves with the Kraken app. Learn how to create a Kraken account here. As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Krakenites are industry pioneers who develop premium crypto products for experienced traders, institutions, and newcomers to the space. Kraken is committed to industry-leading security, crypto education, and world-class client support through our products like Kraken Pro, Desktop, Wallet, and Kraken Futures. **Become a Krakenite and build the future of crypto!Proof of workThe team** We are currently seeking an experienced Senior Software Engineer to join our growing Payments & Blockchain team to be focused on our payments systems. The Payments & Blockchain team is responsible for the first and last mile of every dollar (digital or fiat) that goes in our out of Kraken. Join our Payments team to help integrate Kraken’s systems with an ever-expanding universe of payment providers. As a member of this team, your focus is on protecting client funds. You will be responsible for building systems that communicate with various blockchains to enable the timely processing of client transactions, while also ensuring the safety and security of all funds on the exchange. **The opportunity**

*   Design, develop, and maintain high-quality payment processing systems using React.js and other relevant technologies
*   Build and refine seamless transaction experiences that optimize fund transfers for speed, security, and reliability
*   Ensure an efficient and intuitive onboarding experience for users interacting with payment systems, reducing friction and improving trust
*   Develop innovative features that enhance engagement, retention, and loyalty within the payments ecosystem
*   Set the standard for high-quality, secure code and lead the development of complex financial software systems
*   Influence technical decisions, contribute to strategy discussions, and shape product/domain decisions with a deep understanding of financial systems and security best practices
*   Mentor engineers, foster a culture of technical excellence, and drive process improvements in financial software development
*   Design and implement scalable, maintainable, and fault-tolerant financial systems, ensuring compliance and security best practices

**Skills You Should HODL**

*   6+ years of experience in software development, with a focus on web and mobile applications
*   Deep understanding of JavaScript/TypeScript and proficiency with React Native frameworks
*   Strong experience of API design, security, and performance optimization
*   Experience with Next.js and WebSockets
*   Experience with frontend testing frameworks
*   Familiarity with modern front-end build pipelines and tooling
*   Strong understanding of UI/UX best practices and principles
*   Experience within a large technology organization or fast growing startup
*   Hands-on experience in consumer payments, crypto or fintech mobile applications
*   Strong written and verbal communication skills in English
*   Available in EU afternoons

**Nice to haves**

*   Familiarity with native mobile app development (iOS/Android)
*   Knowledge of the cryptocurrency industry and blockchain technology

_Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis._ _Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution._ _We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance._ Kraken is powered by people from around the world and we celebrate all Krakenites for their diverse talents, backgrounds, contributions and unique perspectives. We hire strictly based on merit, meaning we seek out the candidates with the right abilities, knowledge, and skills considered the most suitable for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto! We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments are designed to evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Assessment results are considered alongside other relevant information, such as experience and interviews, and are not the sole basis for any employment decision. As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. **Stay in the know** Follow us on Twitter Learn on the Kraken Blog Connect on LinkedIn Candidate Privacy Notice

Senior Software Engineer - React Native - Payments

**Building the Future of Crypto** Our Krakenites are a world-class team with crypto conviction, united by our desire to discover and unlock the potential of crypto and blockchain technology. **What makes us different?** Kraken is a mission-focused company rooted in crypto values. As a Krakenite, you’ll join us on our mission to accelerate the global adoption of crypto, so that everyone can achieve financial freedom and inclusion. For over a decade, Kraken’s focus on our mission and crypto ethos has attracted many of the most talented crypto experts in the world. Before you apply, please read the Kraken Culture page to learn more about our internal culture, values, and mission. We also expect candidates to familiarize themselves with the Kraken app. Learn how to create a Kraken account here. As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Krakenites are industry pioneers who develop premium crypto products for experienced traders, institutions, and newcomers to the space. Kraken is committed to industry-leading security, crypto education, and world-class client support through our products like Kraken Pro, Desktop, Wallet, and Kraken Futures. **Become a Krakenite and build the future of crypto!Proof of work** The Team The Earn Pod owns the frontend surface for all of Kraken’s Earn-related features — across Krak, Consumer Web/Mobile, and Pro Web/Mobile. This includes staking, yield, fixed/flexible earnings, and upcoming DeFi-powered products. The Pod coordinates closely with the backend/deFi services, Wallet, Design, Product, and other platform teams to deliver a seamless, consistent, and high-quality user experience across consumer segments. As the scope and scale of Earn grow rapidly, we’re seeking a Staff Frontend Engineer to shape the technical foundation, lead large-scale initiatives, and ensure long-term frontend excellence. How We Work

*   We give engineers ownership and trust them to ship high-impact work with craftsmanship and accountability
*   We move quickly, experiment often, and learn fast from data and feedback.
*   We work asynchronously across time zones, supporting each other with open communication and shared goals

Why This Role Matters Every decision you make will shape how people discover, trust, and engage with our Earn products globally. As a Staff Engineer on the Earn Pod, you’ll set technical direction through context and clarity empowering others to execute with confidence. You’ll mentor through example and collaboration, raising the technical bar across teams and ensuring our systems scale with performance, reliability, and purpose. This role sits at the intersection of product, marketing, and infrastructure turning ideas into measurable results. You’ll lead with accountability and empathy, aligning teams around shared goals and building sustainable systems that drive growth of Earn through engineering excellence. What You’ll Own

*   Set and evolve the frontend architecture and standards for Earn across all platforms (web + mobile)
*   Lead high-impact, cross-app initiatives: major refactors, performance & reliability improvements, shared UI/component libraries or SDKs, and codebase modernization
*   Define and enforce frontend best practices, testing strategy, performance budgets, and accessibility standards
*   Collaborate deeply with backend, DeFi, and product/service teams to ensure coherent API contracts, state management, and data flow across surfaces
*   Work closely with Product & Design to translate complex Earn/crypto concepts into intuitive, user-friendly, and performant UI/UX across user types (krak, consumer & pro)
*   Mentorship and technical leadership: guide and review frontend engineers, influence roadmap choices, and act as a cross-pod technical leader

The Opportunity

*   Architect, build, and maintain scalable, maintainable, high-performance frontend applications across React / Next.js / React Native (or similar) stacks
*   Build reusable UI components, shared libraries/styles, and abstractions to support multiple apps and platforms
*   Optimize web/mobile performance, reliability, load-times — especially critical for financial and crypto features involving real-time data
*   Ensure UX consistency and quality (design system adherence, responsive/mobile-first, accessibility, edge-case handling)
*   Define and enforce frontend testing, monitoring, and quality standards
*   Collaborate across teams — backend, devops, services, design, product — to shape APIs, data flows, error-handling, and user flows, particularly for Earn features and DeFi integrations
*   Serve as a senior technical voice in architecture, tech-strategy, and long-term frontend planning

Skills you should HODL

*   6+ years (or equivalent) professional experience delivering complex web and/or mobile applications
*   Deep expertise with JavaScript/TypeScript, React (or equivalent component-based framework), and modern frontend ecosystems (e.g. Next.js, React Native, consistent build pipelines)
*   Strong foundation in HTML5, CSS3 (or CSS-in-JS / styling solutions), responsive layout, cross-browser/device compatibility, accessibility, UI/UX best practices
*   Experience architecting large-scale, maintainable frontend systems — component libraries, shared modules, code reuse, scalable state management, performance tuning
*   Proven ability to lead technical direction, influence design and architecture decisions, and deliver across multiple applications or codebases
*   Excellent collaboration skills — able to work closely with backend/service teams, design, product, and other stakeholders to deliver cross-functional features
*   Strong problem-solving, analytical thinking, and ability to trade off short-term needs with long-term architecture/maintainability
*   Experience building or maintaining shared UI component libraries or SDKs across multiple platforms (web & mobile)
*   Background with backend-integration patterns, API-driven frontend design, state management for real-time data, and cross-platform consistency
*   Demonstrated track record of mentoring, code reviews, engineering culture influence, and driving engineering excellence across teams

Nice to Haves

*   Previous experience working in fintech, crypto, trading, or yield/interest-bearing products — familiarity with financial flows, security implications, real-time data
*   Familiarity with crypto-specific UX challenges (e.g. wallet flows, permission/consent flows, error-handling for financial/deFi services)

Why This Role Matters

*   You’ll own the core frontend foundation for one of Kraken’s most strategic offerings — Earn, used by millions, across Krak, consumer & pro platforms
*   Your work shapes how users interact with high-impact financial and DeFi products — from usability and performance to security and reliability
*   As a Staff-level engineer, you’ll influence not just code, but architecture, cross-team standards, and long-term platform scalability
*   The role sits at the intersection of product ambition, frontend excellence, and crypto innovation — a rare opportunity to build at scale in a mission-driven domain

_Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis._ _Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution._ _We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance._ Kraken is powered by people from around the world and we celebrate all Krakenites for their diverse talents, backgrounds, contributions and unique perspectives. We hire strictly based on merit, meaning we seek out the candidates with the right abilities, knowledge, and skills considered the most suitable for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto! We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. **These assessments are designed to evaluate competencies relevant to the role and are applied consistently across candidates for similar positions.** Assessment results are considered alongside other **relevant** information, **such as experience and interviews,** and are not the sole basis for any employment decision. As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. **Stay in the know** Follow us on Twitter Learn on the Kraken Blog Connect on LinkedIn Candidate Privacy Notice

Staff Software Engineer - Mobile/Frontend - Consumer

We have a need for a Senior Fullstack Engineer to take ownership of the Bank.Green website. What difference will you make? Role Overview We have a need for a Senior Fullstack Engineer to take ownership of the Bank.Green website. The website is builtin Vue.js with Nuxt.js and deployed via Cloudflare. We use prismic.io as a headless CMS and connect to internal graphQL and REST APIs. Because of the large number of pages (~5000) we serve, we have to pay special attention to our prismic.io CDN traffic and caching with automated builds. Taking ownership of the website will mean

*   Understanding the vue.js lifecycle
*   Understanding cloudflare deployment
*   Understanding the nuxt build pipeline
*   Carefully authoring and reviewing PRs
*   Mentoring more junior frontend developers

For internal communication, we use slack, linear.app, and, when necessary, MS365. Functionally, the website allows users to see how their current bank, and potential new alternative banks, rank on environmental issues - primarily fossil fuel and related sectors support. It also provides suggestions on how to talk to your current or potential future bank about your environmental concerns. What are we looking for? Qualifications

*   Proven experience as a Fullstack Engineer, preferably in a mid to senior level capacity.
*   Proficiency in JavaScript programming language.
*   Familiarity with Vue.js + Nuxt is nice to have but experience with React+Next also works well
*   Experience working with and mentoring more junior colleagues
*   Experience working asynchronously with colleagues in different time zones - through Slack, MS Teams, or similar.
*   Experience working in Agile environments and using collaborative development tools (e.g., Linear or Jira, Git).
*   Strong problem-solving skills and attention to detail.
*   Excellent communication and teamwork abilities.
*   Passion for sustainability and environmental advocacy.

What will you be doing? **About Bank.Green** Since the Paris Agreement, global banks have poured a stag gering $6.9t into the fossil fuel industry. At Bank.Green, our mission is to lower this vast carbon footprint via technology and consumer action. We empower bank customers with the tools and insights they need to influence their banks towards sustainable lending, or switch to greener alternatives. To date, our bank-checking tool has been used over 500,000 times by bank customers worldwide, while we have shifted a at least $35,000,000 towards banks who are financing a greener future. Through transparency, engagement, and innovation, we aim to redefine the role of banks in the fight against climate change. Commitment This role is UNPAID and VOLUNTEER-BASED. We are seeking a commitment of 5-10 hours per week. We are looking for somebody to come on long-term, for at least a 6 month commitment. We know that this a lot to ask. Bank.Green is a passion project of many people including other developers and data scientists. Many of our volunteers are

*   Unemployed and want to keep their fingers warm by doing something good for the world,
*   Otherwise trying to break into tech or environmental fields.

We hope that you’re coming with some industry experience for this particular role. Qualifications

*   Proven experience as a Fullstack Engineer, preferably in a mid to senior level capacity.
*   Proficiency in JavaScript programming language.
*   Familiarity with Vue.js + Nuxt is nice to have but experience with React+Next also works well
*   Experience working with and mentoring more junior colleagues
*   Experience working asynchronously with colleagues in different time zones - through Slack, MS Teams, or similar.
*   Experience working in Agile environments and using collaborative development tools (e.g., Linear or Jira, Git).
*   Strong problem-solving skills and attention to detail.
*   Excellent communication and teamwork abilities.
*   Passion for sustainability and environmental advocacy.

Senior Fullstack Engineer - Volunteer

**This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Staff FullStack Engineer - JavaScript in UK.** In this role, you will lead the design and delivery of a greenfield financial subsystem that enables property managers to maintain accurate, compliant, and reliable trust accounting. You will work across the full stack, from React-based frontend development to backend data integration, influencing architecture, processes, and delivery from day one. This position offers the opportunity to set technical standards, champion engineering best practices, and ensure financial correctness at scale. You will collaborate closely with cross-functional teams, balancing hands-on development with mentorship and technical leadership. The environment is fast-paced, remote-friendly, and centered on high-quality, resilient software that directly impacts customers’ operations. This is ideal for someone who thrives in ownership-driven roles and wants to make a tangible impact on product reliability and compliance. **Accountabilities**

*   Lead the architecture and development of a greenfield trust accounting subsystem, delivering a high-quality MVP and subsequent versions.
*   Implement a flexible, white-label React application integrated with backend systems for data processing and reporting.
*   Ensure secure, scalable, and auditable financial operations that comply with regulatory and accounting standards.
*   Refine engineering processes to improve delivery speed, system reliability, and team autonomy.
*   Establish and maintain CI/CD pipelines for frontend and backend systems to support independent deployments.
*   Provide technical guidance across teams, fostering transparency, accountability, and high-quality code standards.
*   Collaborate with Finance, Product, Legal, and Engineering teams to ensure seamless integration and operational reliability.

**Requirements**

*   8+ years of experience as a FullStack Engineer, including at least 2 years at a Staff Engineer or equivalent level.
*   Deep expertise in JavaScript/TypeScript and Node.js , with strong frontend experience using React.
*   Proven experience architecting and developing white-label or multi-tenant solutions.
*   Solid foundation in software engineering principles, including writing production code and contributing to architecture discussions.
*   Experience in SaaS or platform-focused engineering teams is preferred.
*   Strong collaboration and communication skills, particularly in distributed or remote teams.
*   Comfortable working in agile environments with shifting priorities and cross-functional stakeholders.
*   Experience with accounting, ledger systems, or financial software is a significant plus.

**Benefits**

*   Competitive market-based compensation.
*   100% remote work with flexibility to work from anywhere within France.
*   Equity options to share in the company’s growth and success.
*   Career development opportunities with professional growth and advancement paths.
*   Annual paid leave and country-specific benefits including health insurance and pensions.
*   Inclusive, international team culture with colleagues across 40+ countries.
*   Dynamic, values-driven environment that emphasizes ownership, quality, and innovation.

**Why Apply Through Jobgether?** We use an **AI-powered matching process** to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best! Why Apply Through Jobgether? **Data Privacy Notice:** By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Full Stack Engineer

Job Description

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