**Senior Full Stack Engineer (Frontend/Mobile-Leaning) – Travel TechContract, Outside IR35Remote (UK only)£400-500/day**

A fast-growing travel concierge startup needs a frontend/mobile-leaning engineer to build out their React Native app for iOS and Android.

You'll be building:

*   Mobile flows for onboarding, auth/OTP, trip planning, bookings, notifications, support
*   Polished React Native UI across iOS and Android
*   Integration with backend APIs (Node.js, Express.js, TypeScript, MongoDB)
*   State management, navigation, offline handling, push notifications, deep links

What you'll bring:

*   Strong React Native and TypeScript skills
*   Solid REST API integration experience
*   Good grip on iOS/Android app lifecycle and release requirements
*   Comfort working with Node.js/Express/MongoDB backends
*   Startup/small-team pace

Bonus points: Expo, React Navigation, Zustand/Redux Toolkit, React Query; mobile testing (Detox/Maestro); CI/CD for mobile, TestFlight/Play Console.

Get in touch if this sounds like you.

Mobile Engineer

Senior Front End Developer (React / Next.js / React Native)

**Salary:** Up to £75,000

**Location:** Fully Remote (UK)

A leading PropTech company is looking for a Senior Front End Developer to help shape the future of its web and mobile platforms.

This is a hands-on senior engineering role, working across a modern Next.js web platform and a cross-platform React Native mobile application. You'll play a key role in delivering complex features, influencing frontend architecture, and championing modern engineering practices, including AI-assisted development workflows.

**What You'll Be Doing**

*   Build and deliver complex features across both web and mobile platforms.
*   Develop modern frontend applications using React, Next.js, and TypeScript.
*   Contribute to frontend architecture, shared component libraries, and engineering standards.
*   Work across both the Next.js web application and the React Native mobile app.
*   Review code, mentor other engineers, and promote engineering best practices.
*   Collaborate closely with Product, Design, QA, and Platform teams throughout the development lifecycle.
*   Build and improve CI/CD pipelines, release processes, and deployment workflows.
*   Help drive the adoption of AI tooling and automation across the engineering team.
*   Participate in architectural discussions and contribute to the evolution of the frontend technology stack.

**What You'll Need**

*   Strong commercial experience with React, Next.js, and TypeScript.
*   Experience building and maintaining production React Native applications.
*   Strong understanding of TanStack Query, Zustand, and modern state management approaches.
*   Experience building component libraries using Tailwind CSS.
*   Excellent knowledge of frontend architecture, performance optimisation, and accessibility.
*   Experience working within monorepo environments such as Nx or Turborepo.
*   Experience with CI/CD, GitHub Actions, and modern deployment pipelines.
*   Knowledge of headless CMS platforms and component-driven architectures.
*   Experience working with cloud platforms such as Azure or Vercel.
*   Strong understanding of testing strategies across both web and mobile applications.
*   Experience using Claude Code or similar AI-assisted development tools as part of your day-to-day workflow.
*   Comfortable mentoring engineers through code reviews, technical discussions, and pair programming.
*   Excellent communication skills and the ability to collaborate effectively across multidisciplinary teams.

**About You**

This opportunity would suit a Senior Front End Developer who enjoys solving complex technical challenges, working across both web and mobile applications, and helping to shape engineering standards within a collaborative, product-focused environment.

Frontend Developer

**This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.** She will pick the best candidates from Jack's network. The next step is to speak to Jack. **Title** Lead Software Engineer at Anima - YC-backed HealthTech **Job Title** Lead Software Engineer **Salary** Not Disclosed **Company Description** Anima - YC-backed HealthTech startup **Job Description** Join a high-velocity team building the future of personalized medicine through a proprietary active learning architecture. As a Lead Engineer, you will own critical product features end-to-end, leveraging a serverless AWS stack and TypeScript to ship life-saving tools for medical teams and patients while navigating novel technical challenges in deep phenotyping. **Location** Remote **Why this role is remarkable**

*   Work alongside an elite technical team including YC founders and Cambridge MB/PhDs who have built self-driving vehicles and acoustic deep learning systems.
*   Ship at incredible speed on a highly scalable, zero-ops serverless architecture that handles thousands of medical channels and real-time patient data processing.
*   Contribute to a mission-critical platform that predated the vertical AI craze, utilizing a 2021 patent on active reinforcement learning for clinical excellence.

**What You Will Do**

*   Architect and deploy type-safe, full-stack applications using TypeScript, React, and Angular across both clinical and patient-facing web environments.
*   Lead the end-to-end delivery of complex product features, from initial conception through to production on AWS Lambda, DynamoDB, and SQS infrastructure.
*   Optimize user experience and interface safety through disciplined version control, CI/CD practices, and dimensionality reduction at system interfaces.

**The ideal candidate**

*   Possesses expert-level proficiency in TypeScript and the Node.js ecosystem with a pragmatic approach to technical debt and tool selection.
*   Demonstrates a relentless track record of shipping production-grade software and navigating ambiguity to solve complex algorithmic problems from first principles.
*   Exhibits deep hands-on expertise in serverless cloud architecture (AWS) and a drive to master new technologies to solve high-impact healthcare challenges.

**Who are Jack & Jill?** Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. **How does this work?**

*   Jack's an AI agent for job searching and career coaching. He works for you.
*   Jill is the AI recruiter working for the company. She recruits from Jack's network.
*   If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

**We never post fake jobs** This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Lead Software Engineer at Anima

Senior Fullstack Engineer

Remote (UK), Occasional London Meetups

Up to £90,000

Senior Fullstack Engineer – Would you like the opportunity to work for an award-winning AI-driven fintech organisation? Their current platform combines advanced domain-specific AI with human expertise to deliver enhanced operational performance and decision-making capabilities. This opportunity would suit Senior Fullstack Engineers who enjoy working across modern distributed systems and are particularly strong in TypeScript and Node.js development.

The position is technically full stack, although there is significant flexibility around the balance between frontend and backend work. Engineers with a strong backend preference are encouraged.

**Key Requirements**

*   Strong commercial experience with TypeScript and Node.js
*   Experience building and maintaining event-driven or distributed systems
*   Solid software engineering fundamentals and system design skills
*   Ability to work collaboratively within a high-performing engineering environment

If you’re a Senior Fullstack Engineer looking for a new challenge, please apply.

Senior Fullstack Engineer

*   **Role**: Senior Full Stack Engineer (Remote)
*   **Location**: Remote (Work from Anywhere)
*   **JobType**: Contract
*   **Payout**: $30 - $80/hour

**Role Overview:**

We are hiring for one of our clients, seeking a Senior Fullstack Engineer to work on a contract basis. The role involves designing, developing, and maintaining full-stack applications using modern technologies. You will collaborate with cross-functional teams to deliver scalable solutions.

**Key Responsibilities:**

• Design and implement robust, scalable full-stack applications from frontend to backend.

• Develop and maintain RESTful APIs, microservices, and database architectures.

• Write clean, efficient, and well-documented code while adhering to best practices.

• Optimize application performance, ensuring fast load times and seamless user experiences.

• Participate in code reviews, debugging, and troubleshooting across the stack.

**Required Skills & Qualifications:**

• Proficiency in JavaScript, TypeScript, Node.js, and React or similar frontend frameworks.

• Experience with backend development using Python, Go, or Java.

• Strong understanding of databases such as PostgreSQL, MongoDB, or DynamoDB.

• Familiarity with cloud platforms like AWS, Azure, or GCP.

• Knowledge of DevOps practices, CI/CD pipelines, and containerization tools like Docker.

• Experience with testing frameworks such as Jest, Mocha, or Selenium.

• Ability to work independently with minimal supervision in a remote environment.

• Strong problem-solving skills and attention to detail.

**More About the Opportunity:**

This role offers a unique opportunity to work with a global leader in the Software Development | Technology, Information and Internet | IT Services and IT Consulting | Information Services industry, contributing to the development of high-impact digital solutions. The contract includes flexible hours and the ability to work from anywhere.

**Equal Opportunity Employer:**

We hire based on skills and expertise. All qualified candidates are welcome regardless of background, experience, or prior employment history. Applications are reviewed solely on demonstrated technical ability and qualifications.

**Apply Now!**

Senior Full Stack Engineer (Remote)

*   **Role:** Full Stack Engineer - Python & React (Remote)
*   **Location:** Remote (Work from Anywhere)
*   **Job Type:** Contract
*   **Payout**: $30 - $90/hour

**Role Overview:**

We are hiring for one of our clients, seeking a Fullstack Engineer (Python+React) to work on a contract basis. The role involves developing, maintaining, and scaling web applications using Python and React. You will collaborate with cross-functional teams to deliver high-quality software solutions.

**Key Responsibilities:**

• Design, build, and deploy full-stack web applications using Python and React.

• Write clean, efficient, and maintainable code following best practices.

• Collaborate with product managers and designers to define and implement new features.

• Troubleshoot, debug, and optimize existing applications for performance and scalability.

• Participate in code reviews and contribute to technical documentation.

**Required Skills & Qualifications:**

• Proficiency in Python and modern JavaScript/TypeScript.

• Experience with React.js and front-end development best practices.

• Knowledge of back-end frameworks such as Django or Flask.

• Familiarity with RESTful APIs, databases (SQL/NoSQL), and cloud services.

• Understanding of version control systems like Git and CI/CD pipelines.

**More About the Opportunity:**

This role offers a unique opportunity to work with a global leader in the Software Development industry, contributing to the development of scalable and robust web applications. You will have the chance to solve complex problems and work in a collaborative environment.

**Equal Opportunity Employer:**

We hire based on skills and expertise. All qualified candidates are welcome regardless of background, experience, or prior employment history. Applications are reviewed solely on demonstrated technical ability and qualifications.

**Apply Now!**

Full Stack Engineer - Python & React (Remote)

**Python Fullstack Developer | Sports Betting Quant Startup | London - Fully Remote_Please note: Please note: this role cannot provide sponsorship. Applicants must have existing right to work._**

We're partnering with an ambitious, well-funded sports betting and systematic trading startup that's building cutting-edge technology at the intersection of **sports analytics, quantitative research, and automated trading**.

As a **Python Fullstack Developer**, you'll work directly with quantitative researchers, mathematicians, and trading specialists to build the systems that power data-driven betting strategies. This is a genuine opportunity to join a high-calibre team and have a significant impact on a rapidly growing business.

**What You'll Be Doing**

*   Building and scaling Python-based trading and data platforms
*   Developing integrations with sports data providers and betting exchanges
*   Working closely with quant researchers to support systematic trading models
*   Designing high-performance solutions for real-time data processing
*   Contributing to greenfield projects and influencing technical direction

**What We're Looking For**

*   5+ years' commercial Python development experience in sports betting industry **is a MUST have.**
*   Degree in Computer Science, Engineering, or a related field is a MUST have
*   Experience working with REST and streaming APIs
*   Frontend exposure with React, Next.js and TypeScript
*   Strong understanding of databases, data structures and software architecture
*   AWS or other cloud platform experience
*   A self-starter who enjoys ownership, autonomy and solving complex problems

**Why Join?**

*   Work alongside exceptional engineers, researchers and analysts
*   Greenfield development with real technical challenges
*   Direct exposure to quantitative trading and sports analytics
*   Small, highly talented team where your work has visible impact
*   Excellent opportunity for career progression in a fast-growing business

If you're a strong Python engineer looking for a role that combines technology, data, and systematic trading, we'd love to hear from you.

**Apply now with your CV for immediate consideration.**

Mobile Engineer

Job Description

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