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278 api developer jobs found

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Contract Spy
Mar 30, 2026
Hourly/Freelance
API Developer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
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 API 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 alongside a...
Contract Spy
Mar 23, 2026
Hourly/Freelance
API Developer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
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 API 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 alongside a...
Contract Spy
Mar 16, 2026
Hourly/Freelance
API Developer - AI Trainer at DataAnnotation, Remote, £Hourly Rate
Contract Spy Remote
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 API 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 alongside a...
Contract Spy
Mar 27, 2026
Duration not stated
Senior Android Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 27, 2026
Duration not stated
Senior IOS Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
  400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 20, 2026
Duration not stated
Senior Android Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within structured and governed...
Contract Spy
Mar 20, 2026
Duration not stated
Senior IOS Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
  400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 13, 2026
Duration not stated
Senior Android Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £Contract Rate
Contract Spy Staines TW18, UK
Job Information Date Opened 12/03/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred...
Contract Spy
Mar 13, 2026
Duration not stated
Senior IOS Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £Contract Rate
Contract Spy Staines TW18, UK
Job Information Date Opened 12/03/2026 Job Type Contract Work Experience 5+ years Industry Public Sector and Government Salary 400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile...
Contract Spy
Mar 26, 2026
Duration not stated
Senior Java Developer - AI Practice at Agilisys, Remote, 3 Months, £Contract Rate
Contract Spy Remote (Wigan, UK)
Title: Senior Java Developer (3 month contract) Location: Home Working Division: AI Practice Work mode: Remote Are you passionate about cutting-edge engineering, data‑driven solutions, and working directly with customers to deliver high‑impact technology outcomes? Do you have deep Java expertise and an interest in building solutions within the Microsoft Fabric and Azure ecosystem? If so, we would love to hear from you!   ABOUT US Agilisys is at the forefront of digital transformation and innovation in the public services sector. With over two decades of experience, we have established ourselves as a trusted partner for governments, local authorities, and organisations nationwide. Our mission is to empower our clients to deliver exceptional public services by harnessing the full potential of technology and data.   OUR VALUES Partnership: we become one team and family with organisations, helping them to...
Contract Spy
Mar 16, 2026
Duration not stated
AI/ML Developer at Delta Capita, Sheffield, £500-£550 per day
£500 - £550 per day
Contract Spy Sheffield, UK
AI/ML Developer - Contract Duration: Initial 6 Month Contract Rate: £500- £550 p/d Location: Sheffield This role sits within a global onboarding and KYC capability team focused on delivering modern, scalable, and user-centric digital solutions. The team brings together business, operations, and technology stakeholders to co-design platforms that improve customer experience, streamline processes, and strengthen operational resilience. The function supports enterprise-wide digital transformation efforts, enabling the move towards a more modern, future-state technology architecture. Teams collaborate across multiple global locations to design and build digital services that allow customers to onboard quickly, simply, and securely. The remit covers onboarding products, platforms, and delivery approaches aligned to agile, client-focused ways of working. Solutions are used by a broad spectrum of customers, from large corporates to small businesses. As part of...
Contract Spy
Apr 02, 2026
Duration not stated
.Net Developer at P92 group uk limited, London EC2A, £450-£750 per day
£450 - £750 per day
Contract Spy London EC2A, UK
Job Overview We are currently seeking a .NET Developer for a contractor role based in our UK office. The .NET Developer will be designing, developing, and testing software applications. Additionally, they will maintain existing codebases, troubleshoot issues, and collaborate with cross-functional teams. P92 has been appointed as an External Software Development Partner. The ideal candidate will have a strong technical background, with expertise in modern .Net stack, and possess a systems-thinking approach to understand the entire process comprehensively. The ideal candidate will be an experienced .Net contractor that is able to switch context quickly and hit the ground running. We expect a positive attitude, along with a high level of commitment and responsibility, to be agile and dedicated to high quality work. Education BSc / MSc degree in Computer Science, Information Engineering or a related subject or equivalent experience Experiences Minimum 3-5...
Contract Spy
Apr 01, 2026
Duration not stated
Salesforce Solution Architect at Technopride Ltd, London, £Apply with Rate
Contract Spy London, UK
Role: Salesforce Solution Architect Location: London, UK Is it Permanent / Contract: FTC for 12months or contract inside IR35 Rate/Salary: Submit at best rate in the market; lowest rate will be considered first. Is it Onsite/Remote/Hybrid: 4 days per week from office Role Overview We are seeking an experienced Salesforce Solution Architect to provide architectural leadership within Agile Scrum teams delivering enterprise-scale solutions on the Salesforce platform. This role focuses on translating business requirements into scalable, secure, and maintainable technical solutions aligned with Salesforce best practices. Working closely with Product Owners, Business Analysts, Developers, and key stakeholders, you will shape solution design, guide technical delivery, and ensure optimal use of Salesforce capabilities. You will champion the “art of the possible” within Salesforce, prioritising out-of-the-box functionality while ensuring...
Contract Spy
Apr 01, 2026
Duration not stated
Senior Front End Developer at Bridebook, Remote, £Competitive Day Rate
Contract Spy Remote
Senior Front-End React Developer At Bridebook, we're digitising the wedding industry! Join us in transforming the wedding planning experience for engaged couples around the world. Full-time Contractor · Remote · Competitive Day Rate Who is Bridebook anyway? Bridebook is a revolutionary wedding planning platform that seeks to make wedding planning an enjoyable, intuitive, and rewarding experience for couples, guests, and industry partners. Launched in the UK, Bridebook has over 1,000,000 planning couples and has been featured in major outlets such as the New York Times, the BBC, and the App Store. After seven years and many iterations later, we have 2 in 3 engaged UK couples and 1 in 3 engaged German couples using Bridebook, and have recently expanded into the French and Irish markets. While we serve a very emotional and creative industry, we are disrupting the wedding industry by leveraging cutting-edge technology to provide seamless and...
Contract Spy
Mar 31, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 30, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 30, 2026
up to 6 Months
Fullstack Product Engineer at IconicShift, Remote, to 7/26, £Contract Rate
Contract Spy Remote (London, UK)
About IconicShift IconicShift AI is building a platform that turns founder intent into usable strategic outputs — clear strategies, investor-grade pitches, and practical roadmaps. It is based on the experience of Mike Harris, founding CEO of First Direct (the world’s first telephone bank), founding CEO of Egg (the world’s first internet bank), and CEO of Mercury Communications (that created some of the UK’s first mobile and cable networks). Most founders don’t fail because they lack ideas or options. They fail because their thinking drifts and they can’t afford the experienced support they need. Their story changes, priorities multiply, and the business loses its single direction. Most AI approaches just help them fail faster by accelerating rushed decisions. IconicShift works by creating a single source of strategic truth, where every decision is tracked and held to account. It refuses to move forward without explicit...
Contract Spy
Mar 30, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, London, £Contract Rate
Contract Spy London, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...
Contract Spy
Mar 27, 2026
up to 6 Months
Software Engineer (Front-end ) at Amplience, Remote UK, 3 Months, £Contract Rate
Contract Spy Remote
Software Engineer (Front-end ) – 3 month Contract At Amplience, we’re transforming how global brands create, manage and deliver content. We provide a powerful, unified platform spanning Content Management Systems, Data Assest Management and Content Supply Chain solutions so retailers can move faster, smarter and with confidence.    Our vision is simple but bold: a world where content moves at the speed of ideas. We’re growing and doing things differently. That means flexibility in how and where you work, a genuinely collaborative culture, and the chance to learn from smart people solving real-world problems. We believe great work happens when people feel supported, trusted and able to live well outside of work.   Key Responsibilities What you’ll be doing We’re now looking for a Software Engineer (Front-End focus) for 3 months initially. Someone who can step in quickly,...
Contract Spy
Mar 27, 2026
Duration not stated
System Administration Tooling at Omnis Intelligence Limited, United Kingdom, £250-£300 per day
£250 - £300 per day
Contract Spy United Kingdom
Introduction The organisation develops and operates a suite of digital platforms that support the management and analysis of operational data within the automotive sector. These platforms integrate information from multiple sources and provide tools that enable manufacturers, dealer groups, and operational teams to work with data effectively. As the platform continues to evolve, we are developing a set of internal system administration tools that allow authorised users to manage configuration, reference data, assets, and platform access in a structured and secure way. These tools form an important part of the platform infrastructure, enabling operational teams to maintain system configuration, manage users and permissions, and administer key platform data without requiring direct database access. Role Overview This role focuses on designing and developing internal system administration tooling that supports the operation and management of the organisation’s...
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