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19 api developer jobs found

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United Kingdom api developer Remote
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Contract Spy
Dec 31, 2025
Hourly/Freelance
Software Developer (Java) - Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and...
Contract Spy
Dec 09, 2025
Duration not stated
AI Marketing Automation Platform Developer at abgrouponline, Remote/Nuneaton, 6 Months, £Contract Rate
Contract Spy Remote (Nuneaton, UK)
Job Overview We are seeking a highly skilled and innovative AI Marketing Automation Platform Developer to join our team. The ideal candidate will have experience in building, integrating, and managing intelligent marketing automation systems that enhance digital marketing efficiency and personalization. This role requires strong technical expertise, creativity, and a deep understanding of marketing workflows. You will work closely with our marketing team to design, develop, and optimize automation tools that drive engagement, streamline operations, and improve ROI. Duties Design, develop, and maintain AI-driven marketing automation systems to support both B2B and B2C campaigns. Integrate APIs for platforms such as Google Ads, Facebook Ads, and email marketing tools (e.g., Mailchimp, HubSpot). Implement and manage data pipelines that collect, clean, and process marketing performance data. Build dashboards and analytics tools using Google Analytics, Data Studio,...
Contract Spy
Jan 06, 2026
Duration not stated
Full Stack Engineer (Strapi, React, Node) at Plume, Remote, £Contractor Rate
Contract Spy Remote (City Of Bristol, England, United Kingdom)
Plume is looking for a mid-senior Full Stack Engineer to support the development of our custom Learning Management System, built on Strapi, React and Node.   This is an initial contractor role with the potential to evolve into a longer term full-time position. Candidates must be based in a European timezone.   You will be contributing to client projects delivered in an agency environment, as well as occasional work on our in-house product. Because much of the work is client facing, the role requires strong communication skills, consistent time tracking and the ability to collaborate with a Project Manager to estimate work accurately and deliver to those estimates. You should be comfortable discussing requirements, demonstrating progress and raising risks early.   You will work across our monolithic Strapi codebase and React applications. This includes schema design, content structures, permissions, endpoints, performance improvements and...
Contract Spy
Dec 29, 2025
Hourly/Freelance
Software Developer (Kotlin) - AI Trainer at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Design high xe2 quality technical content, examples, and...
Contract Spy
Dec 23, 2025
Hourly/Freelance
Software Developer (Kotlin) - Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Design and maintain automated tests to ensure the...
Contract Spy
Dec 30, 2025
Hourly/Freelance
Software Developer (Ruby)/Quality Assurance (AI Trainer) at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please provide your resume in English and specify your proficiency level. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Code generation and code review Prompt evaluation and complex...
Contract Spy
Dec 22, 2025
Hourly/Freelance
AI-Enabled Fullstack Developer at Future Works, Remote, £Freelance Rate
Contract Spy Remote (London, UK)
Description   Future Works is searching for a talented Fullstack Developer with a track record of building groundbreaking consumer products. As a key member of our team, you'll collaborate on exciting projects for top-tier brands, working alongside world-class designers.   Requirements Proven ability to deliver modern web projects from inception to deployment. Familiarity with LLMs (Large Language Models) and experience integrating AI-driven solutions into development processes. AI Native Mindset: A deep understanding of AI tools and technologies, with the ability to actively leverage and develop AI systems to optimize workflows, enhance creativity, and achieve exceptional results. Strong proficiency in JavaScript and TypeScript. 3+ years of experience working with React and Next.js. Expertise in styled-components, CSS/SCSS modules, Tailwind CSS, and shadcn. Experience implementing...
Contract Spy
Dec 15, 2025
Hourly/Freelance
Software Developer (Ruby) - AI Trainer at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Generate prompts that challenge AI. Define...
Contract Spy
Dec 11, 2025
Hourly/Freelance
Software Developer (Kotlin) - AI Trainer at Mindrift, Remote, £Freelance Rate
Contract Spy Remote (United Kingdom)
This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe. About the Role GenAI models are improving very quickly, and one of our goals is to make them capable of addressing specialized questions and achieving complex reasoning skills. If you join the platform as an AI Tutor in Coding, you'll have the opportunity to collaborate on these projects. Although every project is unique, you might typically: Generate prompts that challenge AI. Define...
Contract Spy
Dec 30, 2025
Duration not stated
AI Consultant (Automation, Data & Technical) at AiVision Partners, Remote, £B2B Contract Rate
Contract Spy Remote (United Kingdom)
About the Role AiVision Partners (aivisionpartners.com) is a premier AI transformation consulting firm specializing in turning AI hype into measurable business results for SMBs and mid-market enterprises. As ʺAI business process surgeons, ʺ we deliver precise, surgical interventions -rather than wholesale overhauls -using our proprietary SCALE methodology (Scan, Create, Activate, Launch, Expand) to achieve rapid ROI, often within 90 days. We are seeking versatile AI consultants with expertise spanning automation workflows, data engineering/infrastructure, and technical AI architecture/implementation. This client-facing role combines strategic advisory with hands-on execution, helping clients identify high-impact opportunities, design scalable solutions, and deploy production-grade AI systems that drive quantifiable efficiency, cost savings, and revenue growth. You 'll work remotely, collaborating on multiple engagements across industries such as manufacturing,...
Contract Spy
Dec 24, 2025
up to 6 Months
Senior Systems Integration Test Analyst at Ten10, London/Remote, 3 Months initial, £375 per day
£375 per day
Contract Spy Remote (London Area, United Kingdom)
Senior Systems Integration Test Analyst Rate: £375pd (Inside IR35) Duration: 3 months initially Location: London (Hybrid, 3 days per week onsite)     Are you a highly experienced Senior Systems Integration Test Analyst with a proven track record in end-to-end technical systems validation? At Ten10, we’re a leading consultancy in Quality Engineering, Software Testing, and DevOps, and we’re looking for someone like you to join us on an interim basis for a challenging and impactful project.     The Role: Specialist in Back-End Systems Integration You will play a crucial role in ensuring that our client’s integrated back-end systems meet the highest standards of quality. This role is highly focused on the technical depth of systems integration and requires a proactive, inquisitive approach to testing in a dynamic environment.     We need a candidate who is naturally inquisitive,...
Contract Spy
Dec 23, 2025
Duration not stated
Senior JavaScript Engineer at Evaro, Remote, £Contract Rate
Contract Spy Remote (Norwich, England, United Kingdom)
Evaro is looking to do for healthcare what online banking has done for finance, and we’re looking for a JavaScript Engineer to help us do just that. About The Job We’re looking to hire an experienced JavaScript Engineer to help us build beautiful, robust, and scalable digital health products using React, GraphQL, and Node . You’ll be working on tools that are actively improving access to healthcare across the UK and making a real difference in people’s lives. While Evaro is based in Norwich, in the United Kingdom, this is a remote role and you’ll be collaborating with Developers, Designers, and other colleagues spread across Europe. In this role In this role you will: Build and maintain performant front-end experiences using React and GraphQL Contribute to Node-based backend APIs that power patient-facing and internal tools Collaborate with Design, Product, and QA to deliver polished, accessible digital experiences Write...
Contract Spy
Dec 19, 2025
up to 6 Months
Senior User Researcher - Active SC at Cabinet Office, Remote, 2 Months, £Contract Rate
Contract Spy Remote (United Kingdom)
Note: SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position, (and speed at which we require a postholder in situ), preference may be given to candidates who meet all of the essential criteria and hold active security clearance   The Applied Data & Insight team (ADI) within the Cabinet Office sit at the centre of the Government Communications profession and are formed from a group of multidisciplinary experts from backgrounds in Digital, Data Science, Software Development, Insight & Evaluation, Behavioural Science and Communications working closely together to deliver effective data-driven solutions across government.   We are looking for a Senior User Researcher to join our team to help develop and deliver a new round of actionable insight from our 6500 users across 240 organisations. The role holder will work...
Contract Spy
Dec 16, 2025
Duration not stated
Senior Data Analyst at ETFbook, Remote, £B2B Contract Rate
Contract Spy Remote (United Kingdom)
Job Title: Senior ETF Data Analyst/Specialist Location: Remote (European Time Zone) Contract Type: B2B   About us: ETFbook is a Swiss SaaS company providing data, analytics, and custom solutions in the Exchange Traded Funds (ETFs) space. Founded in 2020, the we aim to make global ETF data accessible, actionable, and valuable for institutional participants, including ETF issuers, index providers, fund service providers, market makers, exchanges, and buy-side institutions. We develop a platform which offers comprehensive insights through a user-friendly web application and robust APIs, covering areas such as product analysis, fund flow tracking, performance comparisons, and liquidity assessments.   About the role: You’ll join a highly skilled data analysts team, part of the data department. This team is responsible for shaping data roadmap across three regions incl. EMEA, AMER and APAC, acquiring and defining data and...
Contract Spy
Dec 15, 2025
Duration not stated
React Native Engineer at Yonder, Remote, £600 per day
£600 per day
Contract Spy Remote
Full job description What’s Yonder? “It's as if Time Out, Amex and Monzo had a baby” - Will T, Yonder Member We’re building the financial membership of the future. One that works for how you live now. Not how your parents banked in the ‘90s. Yonder combines credit and debit in one membership, designed to be fair, flexible, and actually enjoyable to use. No confusing terms. No dusty points system. Just rewards that actually feel rewarding - from bao to beer to a boarding pass. We raised £23.4M in September 2024 to grow the team, launch even better rewards, and expand beyond the UK. If that sounds good to you, you’ll probably like it here. Sounds cool. What’s my part in this? Over the last year we've added a debit card, a free membership tier, hundreds of new independent partners around the country, countless product improvements and our personal favourite, Yonder Flights, a new way to use Yonder...
Contract Spy
Dec 12, 2025
Duration not stated
Data Analyst at ETFbook, Remote, £B2B Contract Rate
Contract Spy Remote (United Kingdom)
Job Title: ETF Data Analyst/Specialist/Scientist Location: Remote (European Time Zone) Contract Type: B2B   About us: ETFbook is a Swiss SaaS company providing data, analytics, and custom solutions in the Exchange Traded Funds (ETFs) space. Founded in 2020, the we aim to make global ETF data accessible, actionable, and valuable for institutional participants, including ETF issuers, index providers, fund service providers, market makers, exchanges, and buy-side institutions. We develop a platform which offers comprehensive insights through a user-friendly web application and robust APIs, covering areas such as product analysis, fund flow tracking, performance comparisons, and liquidity assessments.   About the role: You’ll join a highly skilled data analysts team, part of the data department. This team is responsible for shaping data roadmap across three regions incl. EMEA, AMER and APAC, acquiring and defining data and...
Contract Spy
Dec 11, 2025
6 Months or more
Full Stack Prototyper at Novus - Strategy & Consulting, Remote/Ellesmere Port, 6 Months, £350-£450 per day
£350 - £450 per day
Contract Spy Remote (Ellesmere Port CH65 9HQ, UK)
Job Specification – Full-Stack Prototyper Job Summary We are seeking a Full-Stack Prototyper to rapidly develop functional proofs of concept that validate AI-driven opportunities within the UK home-buying and mortgage market. This role sits at the technical centre of the Innovation Unit, working at high speed to turn hypotheses into tangible demonstrations that inform strategic decisions. You will work across front-end, back-end, AI integrations, and lightweight data handling. Your work will help determine whether we build , buy , or stop ideas early, enabling the organisation to focus investment on concepts with genuine value and feasibility. Unlike a traditional software engineer, this role focuses on speed, experimentation, exploration of emerging AI tools, and clear communication of technical learnings. You will turn ambiguity into working prototypes that test desirability, feasibility, and viability. Key Responsibilities 1) Rapid...
Contract Spy
Dec 10, 2025
6 Months or more
Frontend Developer (React Js) at Visualising Software Limited, Remote, 6 Months, £Day Rate
£135 per day
Contract Spy Remote (United Kingdom)
Job Title: Frontend Developer (React.js) – 6-Month Contract Location: Remote / UK based required Contract Type: Contractor (6 months) - potential extension Daily rate: £135 About Us: We are building a cutting-edge SaaS web portal for personal trainers to manage clients, sessions, and fitness programs. Our platform leverages immersive 3D visuals to create engaging experiences for trainers and clients alike. We are looking for a talented frontend developer to join us on a 6-month contract to bring our vision to life. Role Overview: As a Frontend Developer, you will be responsible for developing the web portal using React.js , HTML , CSS , and JavaScript , while integrating 3D frameworks like Babylon.js or Three.js to enhance the user experience. This is a hands-on contractor role requiring creativity, technical expertise, and a strong understanding of modern web development practices. Responsibilities:...
Contract Spy
Dec 10, 2025
up to 6 Months
Senior Project Manager at Homes England, Remote/London, 3 Months, £Contract Rate
Contract Spy Remote (London, UK)
Homes England, the government's housing and regeneration agency, plays a central role in tackling the housing challenges the country now faces. We have the appetite, influence, expertise, and resource to drive positive market change, and our mission is to ensure more homes are built in areas of greatest need, improve affordability and create a sustainable housing market.   Following the publication of the government's Levelling Up White Paper, Homes England has also been tasked with a core role in spearheading regeneration, partnering with places to reduce economic disparity, empower local leaders and create equal opportunities across the country to ensure communities reach their full potential.   As a Senior Project Manager , your main responsibilities will be to: Create and lead the project to deliver the agreed outcomes within time, cost, and quality constraints Day-to-day management and leadership of the project and the project team. Providing...
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