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7 api developer jobs found

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United Kingdom Hourly/Freelance api developer
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Contract Spy
Apr 02, 2026
Hourly/Freelance
Android Developer for Digital Asset Marketplace App at Fliprly, London/Remote, £Freelance Rate
Contract Spy Hybrid (London, UK)
About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps (at...
Contract Spy
Mar 19, 2026
Hourly/Freelance
Android Developer for Digital Asset Marketplace App at Fliprly, London/Remote, £Freelance Rate
Contract Spy London, UK
About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps...
Contract Spy
Mar 19, 2026
Hourly/Freelance
AI-Enabled Fullstack Developer at Future Works, Remote, £Freelance Rate
Contract Spy Remote (London, UK)
Description Future Works is searching for a results-driven, AI-Enabled Fullstack Engineer with strong end-to-end experience building custom software solutions. In this role, you will own the development and delivery of scalable, production-grade applications, from architecture through deployment, ensuring solutions are aligned with client requirements and business objectives.   Working within an agentic engineering environment, you will collaborate closely with product managers, designers, and stakeholders to translate business goals into robust technical implementations. By leveraging modern AI-assisted development tools, you will increase the speed and quality of delivery while maintaining strong engineering standards and architectural discipline.   What You’ll Do Design and build production-grade applications with React and Next.js Translate product and client requirements into structured implementation plans...
Contract Spy
Mar 25, 2026
Hourly/Freelance
Game Engine Developer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote (Cambridge, UK)
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Game Engine Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...
Contract Spy
Mar 19, 2026
Hourly/Freelance
Senior AI-Native Developer at Thoth AI, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
Senior AI-Native Developer (Global Remote / Freelance)   The Vision We are seeking New Generation of Developers —one who views AI as their primary collaborator rather than just a tool. You will leverage the latest reasoning models and Agentic Workflows to redefine the development paradigm, shifting the focus from how to write code to how to define logic and verify outcomes.   Key Responsibilities AI-Augmented Development: Masterfully utilize AI coding assistants (Cursor, GitHub Copilot, Windsurf, Claude Code) to achieve hyper-efficient feature delivery and refactoring. Model Capability Testing: Participate in advanced AI Coding Benchmarks, identifying logical pitfalls (hallucinations) in model-generated code and providing high-quality RLHF (Reinforcement Learning from Human Feedback) corrections. Vibe Coding Practice: Explore and optimize natural language-driven development flows. Refine prompt strategies to increase AI...
Contract Spy
Mar 10, 2026
Hourly/Freelance
Web Developer- AI Trainer at DataAnnotation, Remote, From £29.61 an hour
£200 - £240 per day
Contract Spy Remote (London, UK)
Full job description Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient  Web Developer  to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some...
Contract Spy
Mar 11, 2026
Hourly/Freelance
Senior Microsoft 365 Power Platform Developer (Power Apps & Power Automate) at GPS Logistics (EU) Ltd, Drayton, £Contract Option
Contract Spy Drayton, Norwich, UK
Senior Microsoft 365 & Azure Systems Engineer (Hybrid – 50% Office Based) Location: Hybrid – minimum 50% onsite at our offices near Heathrow Hours: Part-time / Flexible Contract: Permanent or Contract (open to discussion) About the Role We are a UK-based same-day courier and logistics company near Heathrow. We are seeking a senior, experienced Microsoft 365 & Azure Systems Engineer to take full ownership of our Microsoft environment and internal business systems. This role is not remote-only . You must be able to attend our offices at least 50% of the time and work closely with our operations team. A key part of the role is the design and build of Microsoft-native business applications , including the long-term development of a Transport Management System (TMS) using Microsoft technologies. Key Responsibilities Own and manage our Microsoft 365 Business Premium environment Administer and optimise: Entra ID...
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