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10 api developer jobs found

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api developer £400 - £500 Greater London
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Duration not stated  (8) up to 6 Months  (1) 6 Months or more  (1)
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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
Mar 09, 2026
Duration not stated
Fullstack Product Engineer at IconicShift, London, £Contract Rate
Contract Spy 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 acceptance of core strategic bets, ensuring...
Contract Spy
Mar 16, 2026
6 Months or more
AI-First Full Stack Developer at ISTARI, London, 6 Months initial, £500–700 per day
£500 - £700 per day
Contract Spy London Area, United Kingdom
About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...
Contract Spy
Apr 02, 2026
up to 6 Months
Software Engineer - Java at Pulselive, London Kennington, 3 Months+, £400-£500 per day (Outside IR35)
£400 - £500 per day
Contract Spy Kennington, London, UK
Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...
Contract Spy
Apr 01, 2026
Duration not stated
Solution Architect at Scrumconnect Consulting, London EC1A, £500 £550 per day (Outside IR35)
£500 - £550 per day
Contract Spy London EC1A, UK
500-550 Outside IR 35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Scrumconnect is a trusted digital delivery partner to UK government departments and public sector bodies. We specialise in building user-centred digital services that improve lives. Our multidisciplinary teams bring together experienced technologists, designers, researchers, and strategists to solve complex challenges and drive meaningful impact in the public sector. Role Overview We are looking for an experienced Solution Architect to lead the design and delivery of digital case management and dispute resolution platforms. You will play a key role in shaping cloud-native architectures, enabling AI automation, and driving compliance within government frameworks. The ideal candidate brings deep expertise in solution architecture within the public or legal sector...
Contract Spy
Mar 30, 2026
Duration not stated
Lead Performance Tester (SC Cleared/SC Eligible) at Scrumconnect Consulting, London, £400-£450 per day (Outside IR35)
£400 - £450 per day
Contract Spy London, UK
Salary 400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A 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. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter.   Role Overview We are seeking a highly skilled Lead Performance Tester (Active SC Cleared) to deliver hands-on load and performance testing across large-scale digital services and backend applications. This is a technical, delivery-focused role operating in structured and governed environments where performance, resilience, and scalability...
Contract Spy
Mar 25, 2026
Duration not stated
Solution Architect at Scrumconnect Consulting, London EC1A, £500 £550 per day (Outside IR35)
£500 - £550 per day
Contract Spy London EC1A, UK
Job Information Date Opened 24/03/2026 Job Type Contract Work Experience 5+ years Industry Government & Public Sector Salary 500-550 Outside IR 35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Scrumconnect is a trusted digital delivery partner to UK government departments and public sector bodies. We specialise in building user-centred digital services that improve lives. Our multidisciplinary teams bring together experienced technologists, designers, researchers, and strategists to solve complex challenges and drive meaningful impact in the public sector. Role Overview We are looking for an experienced Solution Architect to lead the design and delivery of digital case management and dispute resolution platforms. You will play a key role in shaping cloud-native...
Contract Spy
Mar 24, 2026
Duration not stated
Oracle EBS HCM Technical Consultant at Akasa Air, London Area, £450 per day
£450 per day
Contract Spy London Area, United Kingdom
Oracle HCM EBS Tech Consultant, who has worked on EBS HCM modules & very strong in Oracle PL/SQL, Custom Forms, Reports & Fast Formulas with 8~10 Years   Job Title: Oracle EBS HCM Technical Consultant Experience: 8–10 Years Employment Type – Contract Rate - £450 Inside IR35   Job Summary We are looking for an experienced Oracle EBS HCM Technical Consultant with strong expertise in Oracle E-Business Suite HCM modules and deep technical skills in Oracle PL/SQL, Custom Forms, Reports, and Fast Formulas. The ideal candidate will have hands-on experience in developing, customizing, and supporting Oracle EBS HCM solutions. Key Responsibilities Design, develop, and support technical solutions within Oracle EBS HCM modules . Develop complex PL/SQL packages, procedures, functions, triggers, and performance tuning . Build and maintain Custom Forms and Oracle Reports using Oracle Developer Suite....
Contract Spy
Mar 16, 2026
Duration not stated
Lead Performance Tester (SC Cleared/SC Eligible ) at Scrumconnect Consulting, London/Remote, £Contract Rate
£400 - £450 per day
Contract Spy Hybrid (London, UK)
400-450 outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A 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. We are driven by user-centred design, agile delivery, and a commitment to building innovative digital services that truly matter.   Role Overview We are seeking a highly skilled Lead Performance Tester (Active SC Cleared) to deliver hands-on load and performance testing across large-scale digital services and backend applications. This is a technical, delivery-focused role operating in structured and governed environments where performance, resilience, and scalability are...
Contract Spy
Mar 16, 2026
Duration not stated
AI Business Analyst at Emagine Consulting, London, £450-£550 per day
£450 - £550 per day
Contract Spy London, UK
We are seeking a Business Analyst to focus on AI solutions. In this role, you will identify opportunities to enhance client journeys, improve financial outcomes, automate processes, and integrate AI capabilities within a greenfield project across key financial services functions. AI Business Analyst London x3 Days on-site £450-550pd Inside emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster a positive and equitable working environment with our...
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