**Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract LengthOpportunity:**

We're supporting a fast-moving client at huge global scale, that is in need of a **Senior Backend Contractor** with deep experience across **Java and Python**, strong exposure to **Rust**, and ideally a touch of **Ruby**. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment.

**What You'll Be Doing as a Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :**

*   Designing and building robust backend services across Java, Python, and Rust-based systems
*   Collaborating with product and platform teams to scale critical infrastructure
*   Contributing to performance optimisation, secure coding, and clean architecture decisions
*   Bringing in best practices across multiple programming paradigms and languages
*   Ideally, supporting legacy Ruby codebases or integrations where needed

**Core Skills for the Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :**

*   **Senior-level backend experience** with both Java and Python in production systems
*   Proven work with **Rust** (production experience strongly preferred)
*   Familiarity with **Ruby** or willingness to support legacy pieces if required
*   Strong grasp of APIs, cloud-native systems, and scalable architecture
*   Freelance mindset: able to hit the ground running, communicate clearly, and add value fast

Details for the **Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35**

*   **Contract**: LTD company (UK) / B2B
*   **Location**: Remote (must be EU-based for legal/timezone reasons)
*   **Duration**: Long-term engagement potential
*   **Start**: ASAP

**If interested in this Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35, please apply here and we will contact you if it's a good match! :)**

Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

At **PetsApp**, we’re on a mission to make vet care more accessible, convenient, and delightful for pet owners and veterinary teams. We help vet clinics grow and operate efficiently while delivering the best care possible.

We’re looking for a **Product Engineer** who can craft exceptional user experiences and build them too. You will be collaborating with a team that moves fast, ships often, and cares deeply about our users. You’ll be working at the intersection of **AI and pet healthcare**, helping shape the future of our platform.

**What you’ll do**

*   **Design intuitive, delightful, and high-impact experiences** for pet owners and veterinary professionals.
*   Bring your designs to life using **React and TypeScript (and React Native)**
*   Lead **customer interviews and research** to uncover user needs and inform design decisions.
*   Use **Shape Up methodology** to help us smash our bets
*   Create **prototypes, high-fidelity UI designs, and design systems** in **Figma**
*   Collaborate on **AI-powered product experiences**, integrating cutting-edge tech into our platform.

**What we’re looking for**

*   **A strong product thinker** – you go beyond UI and care about product strategy, user problems, and outcomes.
*   Experience working with React (React Native a bonus)
*   **Experience designing and building digital products** (SaaS, B2B and AI-powered products are a plus).
*   **Figma expertise** – you know your way around components, auto-layout, and design systems.
*   Experience working in a **fast-paced, iterative environment** (bonus if you’ve used **Shape Up**).
*   Comfort with **customer research**– talking to users, running tests, and making data-driven design decisions.
*   **Good collaboration skills**– you can work effectively with engineers, product managers, and stakeholders.

**Why join PetsApp?**

*   **Work on meaningful problems** that improve the lives of pets, owners, and veterinary teams.
*   **Collaborate with a high-caliber, mission-driven team** in a fast-growing startup.
*   **Ship real products quickly** in a company that values autonomy and trust.

**Company Benefits**

*   Stock options
*   Flexible hours
*   Remote work
*   25 days holiday
*   Pick your own hardware
*   Training budget
*   Central London office

**Interview Process**

1.  Initial call with a PetsApp pack member
2.  Take home task
3.  Task review
4.  Meet the CEO call with Thom

Product Engineer (Design & Developer)

**Location** Our Sr Software Engineer (Data) will be an integral part of our Engineering teams in EMEA. This role is based remotely in EMEA in one of our legal entities: the UK, Ireland, Estonia, or Spain. It is also available to contractors in other Eastern European locations and Portugal. **Who We Are** DoiT helps fast-growing, digital native companies globally to harness public cloud technology and services to drive business growth. A full-service provider of multi-cloud technology and expertise, DoiT combines the power of intelligent software with deep expertise in Kubernetes, artificial intelligence, and more to deliver the true promise of the cloud at peak efficiency - with ease, not cost. An award-winning strategic partner of AWS, Google Cloud, and Microsoft Azure with $2B cloud spend under management, DoiT works alongside more than 3,000 customers in 70 countries. At DoiT, you’ll join a growing team of committed, experienced, and collaborative “Do’ers” who are passionate about solving the most complex cloud challenges. **The Opportunity** As a Sr Software Engineer (Data), you will be working on improving the DoiT Cloud Intelligence product and implementing new features. You'll be collaborating with product managers and developers from other teams and also participating in product-making decisions. **Responsibilities**

*   Implementing features. From the proposal, through spec and implementation, to maintenance. You're expected to propose things that you think can be a good addition to the products
*   Reviewing code. We believe in code reviews. And you will soon start reviewing pull requests as well!
*   Improving the health of the codebase. We’re mindful of accumulating technical debt. We dedicate one day per week to housekeeping
*   Providing feedback. The team plans and discusses the upcoming work. We provide feedback to each other, trying to find challenges and unknowns as early as possible

**Qualifications**

*   5+ years of software development experience
*   Experience with BigQuery, ClickHouse, SQL, and working with data
*   Experience with both Frontend and Backend engineering
*   A solid understanding of programming languages, ideally knowledge of the React framework and Go programming language, but if you don’t, you will be willing to learn and fully embrace these languages
*   Advantageous to have experience developing solutions in the Cloud, and/or using Cloud services but certainly not a must
*   Embraces continuous development and learning
*   Knowledge of software engineering practices
*   Demonstrated passion for creating high-quality web/SaaS apps
*   Experience with Git/GitHub
*   Excellent communication skills in English, both written and verbal
*   Self-organized, Goal-oriented, self-motivated individual who is confident, thorough and tenacious
*   Ability to effectively operate with flexibility in a fast-paced, constantly evolving team environment
*   A great sense of humor and enjoys having fun at work

**Bonus Points**

*   BA/BS degree or equivalent practical experience
*   Experience with Google Cloud or AWS services from a production environment

**Are you a Do’er?** Be your truest self. Work on your terms. Make a difference. We are home to a global team of incredible talent who work remotely and have the flexibility to have a schedule that balances your work and home life. We embrace and support leveling up your skills professionally and personally. What does being a Do’er mean? We’re all about being entrepreneurial, pursuing knowledge and having fun! Click here to learn more about our core values. Sounds too good to be true? Check out our Glassdoor Page. We thought so too, but we’re here and happy we hit that ‘apply’ button.

*   Unlimited PTO
*   Flexible Working Options
*   Health Insurance
*   Parental Leave
*   Employee Stock Option Plan
*   Home Office Allowance
*   Professional Development Stipend
*   Peer Recognition Program

Full Stack Software Engineer

**Who are we?** At Embeddable, you can expect a very fast pace, ambitious goals and career-defining work. This is _not_ your regular office job - we're looking for people who will live this product and give their best every day. This is just your default, without needing to be pushed. We launched in December 2023 and are already taking the developer world by storm! Like how Stripe enables developers to add payments to their platform and Unity enables you to build world-class games, Embeddable is the end-to-end developer platform for building seamless, lightning-fast customer-facing analytics directly into your product. As a developer, adding a couple of charts to your online platform is easy. Scaling analytics to tens of thousands of end-users, who all have differing data needs and data questions, is a hard problem. Embeddable gives you the infrastructure and tools to rapidly build out your interactive in-product analytics in days, not months, and empowers your team to iterate on your analytics at the pace your customers need. Our 3 core user personas are:

*   Front-end (React.js) developers using our SDK to build beautifully interactive analytical experiences.
*   Data teams building (SQL-based) data models for powering their single-source-of-truth.
*   End users (typically non-technical) who are interacting with the analytical experiences and building out their own custom dashboards in our customers’ platforms.

…and it’s our goal to make sure all of them have _delightful_ user experiences! At Embeddable we’re not just building a platform; we’re also building **a community of superstars** who are driven by curiosity, innovation, and the desire to explore, experiment, and create products and experiences that defy the ordinary. Aaaaand we received a €6m seed funding round in December 2024 (Tech.eu announcement) and are so excited to embark on this new stage of growth where the possibilities are endless! **🧑‍💼 Who are you?** You’re a smart, self-motivated **Marketing Manager** with a knack for turning ideas into well-crafted campaigns, assets, and content that land. You’ve built some B2B marketing muscle already — maybe in a product-led startup or a small team where you had to wear a few hats. You love working hands-on — drafting copy, coordinating campaigns, brainstorming social content — and you’re ready to step into a role where you can take more ownership, experiment, and grow. Joining Embeddable means working closely with our Head of Growth to help scale our brand and acquisition engine. You’ll be the operational force behind many of our core campaigns — and your work will directly help us reach more developers and product teams building analytics into their products. Read on for more... **🔮 The magic you’ll perform** You will...

*   💡 Work with our Head of Growth and proactively contribute ideas that will be turned into live campaigns
*   🛠️ Set up, manage and deliver on growth initiatives ranging from regular weekly comms to one-off campaigns and events
*   ✍️ Write copy for emails, newsletters, paid ads, landing pages, and socials — with tone and message that match our audience
*   📢 Help maintain a consistent, developer-friendly brand voice across channels
*   🎯 Coordinate campaign timelines and asset production (with support from design and leadership)
*   📈 Track what’s performing and suggest optimisations for better engagement and conversion
*   🤝 Work cross-functionally with Design, Product, and Growth to make sure messaging and execution stay aligned

**🤸‍♂️ What You Already HaveHard skills:**

*   3–5 years’ experience in B2B marketing in SaaS or product-led growth environments
*   You’re data-driven, great with numbers, and know your CLTV from your CTR
*   Strong organisational skills and experience coordinating campaign components
*   Solid copywriting ability — you can write clearly and adjust tone for different channels
*   Familiarity with a range of marketing tools (e.g. Notion, Figma, social media and advertising platforms etc.)
*   Comfortable working across multiple formats — from emails to landing pages to ad creative
*   You’re already using AI tools to improve your workflows and ship faster
*   Native-level English

**Soft skills:**

*   ✨ A bias for action — you like to ship things, learn, and iterate
*   💥 You focus on impact over output
*   🎯 Detail-oriented, with a high bar for quality and consistency
*   🧠 Curious about how marketing actually drives growth, not just how things look
*   🗣 An open communicator — you share your wins and losses, and you’re open with feedback (given and received)
*   🌍 You’re effective working remotely, independently, and asynchronously

**🌟 Bonus points if you have:**

*   Experience creating content for technical or developer audiences
*   Exposure to design tools (Figma, Webflow) or basic no-code workflows
*   You have done a bit of coding yourself

**💬 Interview Process**

*   Recruiter Screen
*   Hiring Manager Interview
*   Take-Home Assignment
*   Deep-Dive Interview
*   Executive Interview with Co-founder

**🤩 What You’ll Get From Us**

*   Fully remote working
*   Opportunity to work with a growing international (🇬🇧🇮🇪🇦🇺🇱🇹🇷🇺🇸🇰🇸🇮🇵🇹🇮🇳🇱🇻🇺🇸🇩🇪🇩🇰 !) team - we’re currently a 20 person team with plans to scale significantly in the near future!
*   Very generous stock option plan
*   Up to 30 days annual holidays (+ public holidays 🏝️), depending on location
*   €500 annual Home office budget
*   €500 annual Learning and development budget
*   Quarterly in-person team meet-ups with our entire global team!

🔥 If you’re excited about the role, we’d love to hear from you! Compensation Range: €50K - €60K

Marketing Manager

**Title: Full Stack EngineerLocation: UK (Remote)Duration: 06 months with possibility of extensionDuties**

As Full Stack Engineer, you will work in small teams in a highly collaborative way, use the latest technologies and enjoy seeing the direct impact from your work. Our highly skilled system architects and development managers configure software packages and build custom applications, creating the foundation for rapid and cost-effective implementation of systems that maximize value from day one. Our development teams are small, flexible and employ agile methodologies to quickly provide our consultants with the solutions they need. We combine the latest open source technologies together with traditional Enterprise software products.

**The Role:**

We create both rapid prototypes, usually in 2 to 3 weeks, as well as full-scale applications typically within 2 to 3 months, by working collaboratively and iteratively through design and development to deliver fully functioning web-based and mobile applications that meet business goals. Our Front-End Developers contribute to the architecture across the technology stack, from database to native apps.

**Skills**

*   Software Engineer (6 years minimum experience preferably)
*   Strong programming skills in Python
*   Expertise with SQL databases, cloud equivalent such as Amazon RDS (PostgreSQL, MySQL)
*   Experience utilizing LLMs and prompt engineering
*   Familiarity with GenAI services and frameworks such as AWS Bedrock, LangGraph
*   Familiarity with RAG Pipeline and Vector database
*   Design and develop RESTful APIs ensuring they are efficient, scalable, and secure
*   Experience with CI/CD pipeline setup and management.
*   Experience in using AWS cloud platform for deploying and managing applications
*   Familiarity with GitHub for version control and code collaboration.
*   Knowledge of containerization
*   Strong conceptual problem-solving
*   Ownership mindset
*   Comfortable working in a fast-paced environment

Non-Technical:

First and foremost:

Passionate about technology and excited about the impact of emerging/disruptive technologies. A strong command of English language (both verbal and written), and excellent interpersonal skills. Sound problem-solving skills with the ability to quickly process complex information and present it clearly and simply. Provide technical excellence (whilst adhering to Agile software engineering practices such as DRY, TDD, CI) and leadership/mentorship. Wanting to unleash their inner self-starter and work in an environment that fosters entrepreneurial minds.

Full Stack Engineer

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We are seeking a Staff Software Engineer to join our Infrastructure Platform Engineering team, ensuring the reliability, availability, and operational efficiency of Affirm’s distributed systems. This role is ideal for engineers who thrive in highly scalable, cloud-native environments, focusing on incident response, observability, automation, and system resilience. As part of the Platform, Reliability and Infrastructure Operations group, you will work on proactive failure mitigation, operational tooling, service scaling strategies, and on-call effectiveness to ensure low-latency, highly available services across Affirm's compute, storage, CI/CD, and observability stacks. 🚀 Affirm is scaling fast, and this role will help ensure our platform’s resilience as we keep operating across multiple regions! **What You'll Do**

*   You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.
*   You will collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed.
*   You will act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes.
*   You take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, polcities, testing and alerting in place to support “keep the lights on” & on-call efforts.
*   You will foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
*   You will help develop talent on your team by providing feedback and guidance, and leading by example.

**What We Look For**

*   You have a total of 8+ years of experience as a software engineer.
*   You are proficient in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes
*   You are proficient in developing web apps using declarative UI frameworks like React or Vue.
*   Ensure high availability (HA) and resilience of critical services through runbooks, incident response strategies, and post-mortem analysis.
*   Partner with Observability and Reliability teams to proactively detect and mitigate potential outages.
*   You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
*   Automate operational tasks, deployments, failover processes, and scaling strategies to reduce manual intervention.
*   You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
*   Partner closely with Storage & Replication, Cloud, CI/CD, and Security teams to ensure Affirm’s infrastructure meets high operational standards.
*   Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
*   You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others.
*   You thrive in ambiguity, and are comfortable moving from low level language idioms all the way to the architecture of large systems to understand how they work.
*   Your growth and impact trajectory demonstrates that you have mastered gathering and iterating on feedback from your engineering and cross-functional peers.
*   You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

**Compensation & BenefitsBase Pay Grade** - P **Equity Grade** - UK 7 Employees new to Affirm typically come in at the start of the pay range. Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills. Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company). GBR base pay range per year: **£140,000 - 180,000** Location - **Remote UK** Affirm is proud to be a remote-first company! The majority of our roles are remote and you can work almost anywhere within the country of employment. Affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned Affirm office. A limited number of roles remain office-based due to the nature of their job responsibilities. **Benefits** We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first. Some key highlights of our benefits package include:

*   Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
*   Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
*   Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
*   ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount

We believe It’s On Us to provide an inclusive interview experience for all, including people with disabilities. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process. \[For U.S. positions that could be performed in Los Angeles or San Francisco\] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affirm will consider for employment qualified applicants with arrest and conviction records. By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and hereby freely and unambiguously give informed consent to the collection, processing, use, and storage of your personal information as described therein.

Staff Software Engineer (Infrastructure Platform)

**Role**: Senior Full Stack Engineer (BE Lean)

**Salary range**: 65,000 - 100,000 (+ stock options)

**Location:** Remote (must be willing to travel for conferences)

**Tech stack includes**: React, Typescript, React Native, AWS, Postgres

Multiple Full Stack Engineers for a company looking to expand themselves globally after establishing themselves as a key player in the energy management solutions space. This role will be part of a brand new team working alongside the already existing Australian team.

A chance to be part of something brand new while having job security, a chance to travel for your job as well, attending conferences with the team and working alongside the Australian team in Australia! (all expenses paid)

**Essentials for this role:**

*   Mid / Senior level Full Stack experience (5 years exp minimum)
*   Typescript and React experience
*   Experience working in start ups & fast paced environments.
*   Experience working on complex problems
*   Strong communicators
*   Product / business minded

**Desirables:**

*   Experience with Python or GO
*   React Native Experience
*   Past experience mentoring or leading software engineers
*   CDK & Postgres experience
*   German as a second language

\*\*No sponsorship available \*\*

**Senior Mobile Frontend Developer (Equity-only)Project Summary**

Our social media app's UI prototype has generated tremendous buzz, with experts calling it the "next big thing" in the industry. We're excited to continue the momentum by building a world-class app that delivers on its promise. With all systems fully architected, we're currently in the design phase and looking for experienced senior software developers to join our technical team and help build the app.

We are looking for a senior React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

**Responsibilities**

*   Architect, build and maintain excellent React Native applications with clean code.
*   Release applications to the Apple and Google Play stores.
*   Work with back-end developers to define API contracts and use those contracts in-app.
*   Ensure ongoing code quality via automated unit and integration testing.
*   Work with UX Designers, Architects, and other Developers to implement full stack web and mobile solutions.
*   Work as part of an Agile Scrum team; Design and develop scalable web applications using open-source technologies.
*   Continuously discover, evaluate, and implement new technologies to maximise development efficiency.
*   Collaborate with cross-functional teams to define, design, and ship new features.
*   Work on bug fixing and improving application performance.
*   Working with third-party data sources and APIs.

**Compensation**

This is an equity-only position, offering a unique opportunity to gain a stake in a rapidly growing company and contribute directly to its success.

**Requirements**

*   Ability to work effectively with remote team members.
*   At least 5+ years proven work experience with direct hands-on skill set.
*   BSc or MSc in Computer Science, Engineering, or related field.
*   Proven ability to be self-directed and operate effectively in a fast-paced, high-energy environment.
*   Ability to communicate, influence other supporting teams such as product, QA, DevOps, etc. to achieve the objectives.
*   Experience collaborating with senior developers, project managers, and designers in a fast-paced environment with little supervision.
*   Strong understanding of popular React Native libraries, components, and frameworks.
*   Able to deliver results on time and take responsibility for a project’s successful outcome.
*   Familiarity with cloud native technologies such as Kubernetes, containerisation, microservices and Software-defined Infrastructure.

Senior/Lead Frontend Engineer (Equity only)

**Location:** Remote within the UK

**Salary:** Up to £70,000

**Job Type:** Permanent

**About Us**

Aveni is an award-winning technology company. We use advanced AI to enable scalable efficiency for financial services companies, combining world-leading Natural Language Processing (NLP) and Large Language Model (LLM) expertise with deep financial services domain experience to drive enterprise-wide productivity. Aveni harnesses the power of voice to drive unprecedented efficiency and oversight. We’re using the latest in AI to automate and innovate, empowering businesses to achieve exceptional productivity and compliance outcomes.

**The Role**

As a **Senior Engineer**, you will work within a squad to design, develop, and optimise software solutions, collaborating closely with the **Technical Lead** and cross-functional teams. This is a hands-on role requiring strong full-stack development experience, particularly in **React, Node.js, and TypeScript**. You will contribute to technical decision-making, improve software quality, and leverage **AI-powered tools** to enhance productivity.

**Key Responsibilities**

*   Develop and maintain scalable, high-quality applications using **React, Node.js, and TypeScript**.
*   Implement **secure coding** practices, ensuring compliance with industry standards.
*   Mentor **junior engineers**, conduct peer code reviews, and drive best practices.
*   Collaborate with **Product, Delivery, and Technical Leads** to refine requirements and execute solutions.
*   Work with **AWS cloud-native services** (Lambda, Step Functions, DynamoDB) to develop efficient cloud-based applications.
*   Ensure **CI/CD best practices**, contributing to **GitLab pipelines**, automation, and observability improvements.
*   Integrate **AI-powered tools** (e.g., GitHub Copilot) to enhance development workflows.
*   Drive continuous improvement in **performance, security, and maintainability**.
*   Support **cross-squad collaboration**, ensuring architectural consistency and code reusability.

**What We’re Looking ForEssential Skills & Experience:**

*   Strong hands-on experience in **full-stack development** with **React, Node.js, and TypeScript**.
*   Experience designing, developing, and optimising **scalable and secure** applications.
*   Proficiency in **AWS services** (Lambda, Step Functions, DynamoDB).
*   Familiarity with **CI/CD pipelines** and DevOps best practices.
*   Understanding of **secure coding** and regulatory compliance.
*   Experience mentoring **junior engineers** and leading technical execution.
*   Strong **problem-solving** and debugging skills in complex environments.
*   Experience working within **Agile** squads, participating in sprint planning and backlog refinement.

**Desirable Skills:**

*   Experience with **AI-driven development tools** (e.g., GitHub Copilot).
*   Knowledge of **ElasticSearch** optimisation.
*   Exposure to **Mantine UI** for front-end component design.
*   Understanding of **Infrastructure as Code (IaC)** and cloud cost optimisation.
*   Experience with **AI model integration** in engineering workflows.
*   Background in **regulated industries** (e.g., Financial Services).

**What We Offer**

*   Salary up to £70,000
*   A collaborative and innovative work environment
*   Career growth opportunities towards Technical Lead and beyond
*   Exposure to cutting-edge AI-first engineering practices
*   34 days holiday plus your birthday off
*   Share options
*   Remote and flexible working
*   Life insurance
*   Income protection
*   Private health care
*   Eyecare
*   On-going career development and training
*   Freebies and discounts
*   Emotional wellbeing (Employee assistance programme provides access to 24/7 employee counseling and emotional support)
*   Cycle to work scheme
*   Pension scheme (employer contribution matched up to 5%)

**Join Us in Making a Difference**

At Aveni, we believe that diversity drives innovation. We're committed to building a team that reflects the diverse communities we serve and creating an inclusive workplace where everyone feels valued and empowered to contribute their best work. If you're passionate about leveraging technology to drive positive change and want to be part of a team that's shaping the future of financial services, we'd love to hear from you. We know that some people are likely to only apply where they meet 100% of requirements, but we’d like to hear from you anyway. Apply now to join us on our mission to transform the financial services industry through AI!

Senior Software Engineer

**Full-Stack Developer – Remote (UK-based) | Build the future of enterprise software**

We’re partnered with a global SaaS business on a mission to transform how large organisations manage and optimise their operations. Their flagship product is scaling fast, and with major tech investment underway (think AI, machine learning, cloud-native tooling), they’re now looking for a Full-Stack Developer to join their core development team.

You’ll be embedded within a high-performing, agile squad, contributing to the full SDLC – from planning and design sessions to building production-ready code across UI and API layers. It’s a great role for someone with solid grounding in .NET/C# and modern JavaScript frameworks like React, Angular, or Vue, who’s eager to push their craft further in a collaborative, forward-thinking setup.

**Why it’s worth your time:**

*   Join a product-led company that’s doubling down on innovation – AI, data lakes, and more are incoming
*   Remote-first culture, with the chance to travel to meet-ups and team events when it makes sense
*   You’ll work alongside talented engineers, architects, and Microsoft cloud specialists
*   There’s space here to experiment, grow, and put your stamp on a platform used across major global brands

**You’ll thrive if you:**

*   Have 3+ years of experience developing scalable software using C#/.NET and JavaScript (React preferred, but Angular or Vue also welcome)
*   Are confident working with REST APIs, CI/CD pipelines (Azure DevOps or similar), and cloud-hosted architectures (AWS or Azure)
*   Are familiar with agile delivery (Scrum/SAFe), and comfortable working cross-functionally
*   Enjoy sharing ideas, collaborating across time zones, and learning from your peers
*   Bonus points if you’re curious about AI/ML, Python, Rust, or enjoy tinkering with side projects

This is more than just writing code – it’s about contributing to a team that’s proud of what they build and excited about what’s ahead. If you’re looking to stretch your skills in an ambitious environment where your voice matters, let’s chat.

Software Developer

**About Sotheby's** Established in 1744, Sotheby’s is the world’s premier destination for art and luxury. Sotheby’s promotes access to and ownership of exceptional art and luxury objects through auctions and buy-now channels including private sales, e-commerce and retail. Our trusted global marketplace is supported by an industry-leading technology platform and a network of specialists spanning 40 countries and 70 categories which include Contemporary Art, Modern and Impressionist Art, Old Masters, Chinese Works of Art, Jewelry, Watches, Wine and Spirits, and Design, as well as collectible cars and real estate. Sotheby’s believes in the transformative power of art and culture and is committed to making our industries more inclusive, sustainable and collaborative. **THE ROLE** We are in the process of revolutionizing a 276 year old business. We’re looking for extremely talented Golang or Scala software engineers who would help reshape the future of Sotheby’s through exceptional engineering practices, software development and design. The ideal candidate will help us drive technical vision, product development, innovate, optimize complex problems and improve efficiency. We’re looking for team players that value opinions other than their own, look to data to support their decisions, take initiative and make things better. Ideal candidates are curious and eager to learn, are comfortable with ambiguity and a fast paced, ever changing environment. Our team is distributed across multiple countries and we require people that are strong communicators and can work in a diverse, multicultural online environment. **Responsibilities**

*   Help deliver on the product vision for reshaping a 300-year old industry through building a compelling modern marketplace experience
*   Help drive Sotheby's contribution to servicing the circular economy and drive adoption of marketplace experience to a completely new target demographic
*   Collaborate with designers, user researchers, and engineers to test and ship features continuously
*   Building, optimizing, and maintaining internal and consumer-facing tools that enable Sotheby's sell consigned inventory
*   Designing and building elegant abstractions, shareable libraries, and robust APIs
*   Actively looking for ways to improve the end-to-end experience for specialists across Sotheby's internal-facing product portfolio
*   Working closely with product managers, and stakeholders across the company.

**Ideal Experience & Competencies**

*   5+ years of industry engineering experience with proven track record
*   Excellent communication skills! This entails active listening, taking constructive criticism, and providing feedback whenever necessary.
*   Intrinsically driven to innovate and to take initiative when seeing a process or a problem which could be improved upon.
*   Eager to learn new technologies and open to learning from others. We are not the place for hard-headed individuals, we strive on collaborative efforts
*   Must have proven experience writing, deploying, and running distributed systems
*   Must have experience writing microservices with clear separation of concerns
*   Must have expert knowledge and experience with either Golang or Scala
*   Must have expert knowledge and experience with a modern front-end framework like React
*   Must have proven experience using data structures and algorithms especially as pertain to web system design and distributed systems
*   Must have expert knowledge of RDBMS such as Postgres or MySQL and writing migrations
*   Working knowledge of GraphQL and GRPC is a big plus
*   Working knowledge and experience writing in Golang is a big plus
*   Working knowledge and experience with Docker and Kubernetes
*   Working knowledge of cloud platforms such as GCP or AWS
*   Working knowledge of messaging queue systems

To view our **Candidate Privacy Notice** for the US, please **click here.** To view our **Candidate Privacy Notice** for the UK, Hong Kong, France and Switzerland, please **click here._The Company is an equal opportunity employer and considers all applicants for employment without regard to race (including, without limitation, traits historically associated with race, such as natural hair, hair texture, and protective and treated or untreated hairstyles), color, creed, religion, sex, sexual orientation, marital or civil partnership/union status, national origin, age, disability, pregnancy, genetic predisposition, genetic information, reproductive health decision, sexual orientation, gender identity or expression, alienage or citizenship status, domestic violence victim status, military or veteran status, or any other characteristic protected by federal, state/province or local law. The Company complies with applicable state and local laws prohibiting discrimination in employment in every jurisdiction in which it operates._**

Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Job Description

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Owen Thomas | Pending B Corp™

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