Date posted
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Locations
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Date posted
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Job types
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- Winnersh
- Boyn Hill
- Abbotts Ann
- Camden
- Clay Hill
- Fenny Lock
- Frimley
- Lower Heyford
- Maidenhead Thicket
- New Town
- Reading
- Cheltenham
- Milton Keynes
- Uxbridge
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- West End
- Maidenhead
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45 Contract API jobs in Oxfordshire + 20 miles
Senior Full Stack Developer (TypeScript / Vue.js / C# / .NET) Fully Remote (UK-based) Contract Outside IR35 - Long-Term Contract - Competitive Day Rate - Were working with a well-established organisation undergoing a major platform transformation programme, and theyre looking to add an experienced Full Stack Developer to the team. This role will suit someone who enjoys owning features end-to-end, with strong frontend expertise while remaining comfortable working across APIs, databases, and backend services in a modern environment. What Youll Be Doing * Developing and enhancing customer-facing platforms and transactional systems * Building modern applications using Vue.js and TypeScript * Working closely with product, QA, and engineering teams to deliver new features * Investigating and resolving production issues across frontend, APIs, and databases
Senior Full Stack Developer (TypeScript / Vue.js / C# / .NET) Fully Remote (UK-based) Contract Outside IR35 - Long-Term Contract - Competitive Day Rate - Were working with a well-established organisation undergoing a major platform transformation programme, and theyre looking to add an experienced Full Stack Developer to the team. This role will suit someone who enjoys owning features end-to-end, with strong frontend expertise while remaining comfortable working across APIs, databases, and backend services in a modern environment. What Youll Be Doing * Developing and enhancing customer-facing platforms and transactional systems * Building modern applications using Vue.js and TypeScript * Working closely with product, QA, and engineering teams to deliver new features * Investigating and resolving production issues across frontend, APIs, and databases
Champion the use of strategic platforms such as ENSEK Ignition and shared integration/API frameworks.
Champion the use of strategic platforms such as ENSEK Ignition and shared integration/API frameworks.
PREMIUM
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Solutions Architect (Business Systems)
Solutions Architect (Business Systems)
Dignity Funerals Limited
Boyn Hill, Maidenhead (SL6), SL6 5AA
Up to £75,000 per annum
Drive modern integration approaches (API-first, event-driven, cloud-native)
Drive modern integration approaches (API-first, event-driven, cloud-native)
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QA Engineer Automation
QA Engineer Automation
Halian Technology Limited
Maidenhead Thicket, Maidenhead (SL6)
Up to £400 per day
API testing and backend validation
API testing and backend validation
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Oracle Technical Change Consultant - Financial Systems
Oracle Technical Change Consultant - Financial Systems
Cadence Resourcing Limited
Reading (RG1)
£550 - £600 per day + Outside IR35
The contract requires a solid understanding of database schema and API structures for core financial modules: General Ledger (GL), Accounts Payable (AP), Accounts Receivable (AR), Fixed Assets (FA), and Cash Management (CE).
The contract requires a solid understanding of database schema and API structures for core financial modules: General Ledger (GL), Accounts Payable (AP), Accounts Receivable (AR), Fixed Assets (FA), and Cash Management (CE).
FEATURED
Experience with REST API design and MCP integration patterns
Experience with REST API design and MCP integration patterns
ASP.NET Web API * API-driven backend development
ASP.NET Web API * API-driven backend development
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AI Software Engineer, Firebase, GCP, COR7557
AI Software Engineer, Firebase, GCP, COR7557
Corriculo Ltd
Oxford, Oxfordshire, OX4
£75k - 100k per year + Stock Options
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
AI Software Engineer, Firebase, GCP, COR7557B
AI Software Engineer, Firebase, GCP, COR7557B
Corriculo Ltd
Reading, Berkshire, RG1
£75k - 100k per year + Stock Options
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
Building on Firebase, using Claude API and leading LLMs, the AI Software Engineer will build the end-to-end architecture, security, performance and integration.
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ServiceNow Developer- SC Security Clearance
ServiceNow Developer- SC Security Clearance
Morson Edge
Fenny Lock, Milton Keynes (MK1), MK1 1AS
£500 - 600 per day
• Strong knowledge of JavaScript, ServiceNow scripting, and ServiceNow API usage.
• Strong knowledge of JavaScript, ServiceNow scripting, and ServiceNow API usage.
PREMIUM
The business develops and operates a suite of high-traffic digital products, including web, mobile, and API-driven services used by millions of users globally.
The business develops and operates a suite of high-traffic digital products, including web, mobile, and API-driven services used by millions of users globally.
Build and maintain test automation frameworks covering UI, API, and service-level validation * Solid API and UI automation experience (e.g. Playwright, Cypress, or similar)
Build and maintain test automation frameworks covering UI, API, and service-level validation * Solid API and UI automation experience (e.g. Playwright, Cypress, or similar)
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Lead Solution Architect | Contract (6-12 Months) Hybrid UK | Strong Day Rate - 1-2 days onsite in Luton. Working for Airline client. Were looking for an experienced Lead Solution Architect to drive end-to-end solution design across large-scale, mission-critical programmes. You'll work closely with Product, Engineering and Delivery teams, ensuring multiple workstreams align to a single architecture vision while balancing business outcomes, scalability and technical excellence. Key Responsibilities - Define and own solution architecture across complex programmes and multiple product teams - Create architecture roadmaps, standards, guardrails and reusable design patterns - Lead cross-team integration design, data flows and platform alignment - Ensure solutions are scalable, secure, resilient and aligned to enterprise strategy
Lead Solution Architect | Contract (6-12 Months) Hybrid UK | Strong Day Rate - 1-2 days onsite in Luton. Working for Airline client. Were looking for an experienced Lead Solution Architect to drive end-to-end solution design across large-scale, mission-critical programmes. You'll work closely with Product, Engineering and Delivery teams, ensuring multiple workstreams align to a single architecture vision while balancing business outcomes, scalability and technical excellence. Key Responsibilities - Define and own solution architecture across complex programmes and multiple product teams - Create architecture roadmaps, standards, guardrails and reusable design patterns - Lead cross-team integration design, data flows and platform alignment - Ensure solutions are scalable, secure, resilient and aligned to enterprise strategy
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Integration & Troubleshooting: Proven experience integrating third-party applications with identity providers via SAML, OIDC and API integrations.
Integration & Troubleshooting: Proven experience integrating third-party applications with identity providers via SAML, OIDC and API integrations.
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We are seeking an experienced Data Architect to join our Group Technology team on a 6-month contract. You will help realise the value of the immense Connells Group data landscape for the benefit of customers, colleagues and the overall business. You will use your expertise to define, evolve and communicate the existing Estate Agency enterprise data architecture, to democratise safe access to consolidated and unified data, modelled to help engineering teams develop single customer and property views. The priority for this role will be in mapping the existing estate for CRM data, developing the relevant CDMs as part of Fabric Medallion architecture, and establishing robust bulk extract and ingest patterns to enable CRM integration. * CDM Data Architecture Ownership; with direction from the Enterprise Data Architect, define and maintain the organisations CDM data ...
We are seeking an experienced Data Architect to join our Group Technology team on a 6-month contract. You will help realise the value of the immense Connells Group data landscape for the benefit of customers, colleagues and the overall business. You will use your expertise to define, evolve and communicate the existing Estate Agency enterprise data architecture, to democratise safe access to consolidated and unified data, modelled to help engineering teams develop single customer and property views. The priority for this role will be in mapping the existing estate for CRM data, developing the relevant CDMs as part of Fabric Medallion architecture, and establishing robust bulk extract and ingest patterns to enable CRM integration. * CDM Data Architecture Ownership; with direction from the Enterprise Data Architect, define and maintain the organisations CDM data ...
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Full Stack .NET Web Developer
Full Stack .NET Web Developer
Association For Project Management
Saunderton Lee, Princes Risborough (HP27), HP27 9LE
From £50,000 to £55,000 per annum
Salary: £50,000- £55,000 per annum (depending on experience) 12-month Fixed Term Contract (Full time - 35 hours per week) Hybrid Working Home Based/Princes Risborough - Were Association for Project Management (APM). Were a professional membership organisation that sets the standards for the project profession. As a registered charity, we reinvest our surplus for the benefit of our members and the profession. We deliver education and develop qualifications. We conduct research and provide knowledge and resources. We run events and share best practice. We give people the opportunity to connect and provide community for our individual members and corporate partners, wherever they are. Above all, when doing so makes a difference, we challenge the status quo - Job Role Overview - An exciting opportunity has arisen for a Full Stack .NET Web Developer to join our Digital team on a fixed term ...
Salary: £50,000- £55,000 per annum (depending on experience) 12-month Fixed Term Contract (Full time - 35 hours per week) Hybrid Working Home Based/Princes Risborough - Were Association for Project Management (APM). Were a professional membership organisation that sets the standards for the project profession. As a registered charity, we reinvest our surplus for the benefit of our members and the profession. We deliver education and develop qualifications. We conduct research and provide knowledge and resources. We run events and share best practice. We give people the opportunity to connect and provide community for our individual members and corporate partners, wherever they are. Above all, when doing so makes a difference, we challenge the status quo - Job Role Overview - An exciting opportunity has arisen for a Full Stack .NET Web Developer to join our Digital team on a fixed term ...
Develop and maintain core backend services including python web applications and API services for both external and internal customers.
Develop and maintain core backend services including python web applications and API services for both external and internal customers.
This role combines software engineering, systems architecture, API development, data mapping, automation, and technical problem-solving. The goal is to identify the most effective onboarding approach for each seller, whether that involves API connectivity, bulk uploads, existing integrations, middleware solutions, or building reusable integrations where there is long-term value. Seller API Supporting businesses and developers who wish to integrate directly with the ifndautoparts Seller API. This may include existing integrations, custom-built integrations, data feeds, middleware solutions, or direct API connectivity depending on the seller's requirements. * Utilise and extend the ifndautoparts Seller API to support business seller onboarding and inventory synchronisation. * Assist external developers and technical contacts in integrating with the ifndautoparts API.
This role combines software engineering, systems architecture, API development, data mapping, automation, and technical problem-solving. The goal is to identify the most effective onboarding approach for each seller, whether that involves API connectivity, bulk uploads, existing integrations, middleware solutions, or building reusable integrations where there is long-term value. Seller API Supporting businesses and developers who wish to integrate directly with the ifndautoparts Seller API. This may include existing integrations, custom-built integrations, data feeds, middleware solutions, or direct API connectivity depending on the seller's requirements. * Utilise and extend the ifndautoparts Seller API to support business seller onboarding and inventory synchronisation. * Assist external developers and technical contacts in integrating with the ifndautoparts API.
Senior Full Stack Engineer - Role Type: Permanent - Location: Maidenhead (Hybrid - 3 days a week) Here at Dignity Funerals, a purpose-driven organisation committed to supporting families at life's most important moments, we're looking for a Senior Full Stack Engineer to help shape and deliver the next generation of digital experiences. This is a role for a hands-on technical leader who thrives on solving complex challenges while elevating those around them. You'll play a key role in driving engineering excellence, mentoring others, and shaping the future of our tech landscape. What you'll be doing * Own & deliver complex, scalable solutions across the full stack * Drive technical direction - influence architecture, tooling, and long-term strategy * Code with impact - tackling ambiguous problems with high-quality, maintainable solutions
Senior Full Stack Engineer - Role Type: Permanent - Location: Maidenhead (Hybrid - 3 days a week) Here at Dignity Funerals, a purpose-driven organisation committed to supporting families at life's most important moments, we're looking for a Senior Full Stack Engineer to help shape and deliver the next generation of digital experiences. This is a role for a hands-on technical leader who thrives on solving complex challenges while elevating those around them. You'll play a key role in driving engineering excellence, mentoring others, and shaping the future of our tech landscape. What you'll be doing * Own & deliver complex, scalable solutions across the full stack * Drive technical direction - influence architecture, tooling, and long-term strategy * Code with impact - tackling ambiguous problems with high-quality, maintainable solutions
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Role: Senior Platform Product Manager - Location: Milton Keynes (Hybrid 2 Days a Month On-Site) Salary: £47,000 £56,500 - Network IT are working with a highly respected organisation to recruit a Senior Platform Product Manager to join their Digital Services function. This is a fantastic opportunity to lead the development and optimisation of internal platform products, shaping services that enable teams and stakeholders across the organisation. You will play a key role in delivering data-driven, internally focused platform capabilities, working across the full product lifecycle and operating within a modern, collaborative product environment. Role Overview - As a Senior Platform Product Manager, you will take ownership of complex internal platform products, ensuring they deliver value across multiple teams and stakeholders.
Role: Senior Platform Product Manager - Location: Milton Keynes (Hybrid 2 Days a Month On-Site) Salary: £47,000 £56,500 - Network IT are working with a highly respected organisation to recruit a Senior Platform Product Manager to join their Digital Services function. This is a fantastic opportunity to lead the development and optimisation of internal platform products, shaping services that enable teams and stakeholders across the organisation. You will play a key role in delivering data-driven, internally focused platform capabilities, working across the full product lifecycle and operating within a modern, collaborative product environment. Role Overview - As a Senior Platform Product Manager, you will take ownership of complex internal platform products, ensuring they deliver value across multiple teams and stakeholders.
NEWFEATURED
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Lead Software Engineer Python Full Stack
Lead Software Engineer Python Full Stack
Client Server
Lower Heyford, Bicester (OX25), OX25
£65000 - £80000 per annum + equity + benefits
Lead Software Engineer / Developer (Python Full Stack) Oxford / WFH to £80k - Opportunity to take ownership of the technology strategy, architecture and software platforms that power a growing motorsport and technology business. As the Lead Software Engineer you will shape the future of the engineering function, influence key business decisions and build a high performing team around you whilst remaining hands-on with technology and product delivery. Collaborating with senior leadership, you will define the technical roadmap, make key architectural decisions and drive the adoption of modern engineering practices across the organisation. You'll have significant autonomy to evolve the technology stack, introduce new tools and approaches and build scalable platforms that support real time operations, telemetry, analytics, reporting and AI-enabled workflows used by engineers, ...
Lead Software Engineer / Developer (Python Full Stack) Oxford / WFH to £80k - Opportunity to take ownership of the technology strategy, architecture and software platforms that power a growing motorsport and technology business. As the Lead Software Engineer you will shape the future of the engineering function, influence key business decisions and build a high performing team around you whilst remaining hands-on with technology and product delivery. Collaborating with senior leadership, you will define the technical roadmap, make key architectural decisions and drive the adoption of modern engineering practices across the organisation. You'll have significant autonomy to evolve the technology stack, introduce new tools and approaches and build scalable platforms that support real time operations, telemetry, analytics, reporting and AI-enabled workflows used by engineers, ...
PREMIUM
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Closing date: 23rd June 2026 - Location: RG7 4PR, located between Reading and Basingstoke, with free onsite parking. Package: £61,460 - £95,000 (depending on your suitability, qualifications, and level of experience) Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application. Ready to play your part? At AWE, it's not just a job, it's far more than that. Our shared purpose is to help keep the nation safe. Could this role be the opportunity for you to play your part? * Lead AWE's enterprise AI delivery, turning prototypes into secure, scalable AI solutions that drive innovation and efficiency across the organisation. * Lead a cross-functional AI engineering team, providing technical and team leadership for enterprise AI ...
Closing date: 23rd June 2026 - Location: RG7 4PR, located between Reading and Basingstoke, with free onsite parking. Package: £61,460 - £95,000 (depending on your suitability, qualifications, and level of experience) Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your preferred working pattern on your application. Ready to play your part? At AWE, it's not just a job, it's far more than that. Our shared purpose is to help keep the nation safe. Could this role be the opportunity for you to play your part? * Lead AWE's enterprise AI delivery, turning prototypes into secure, scalable AI solutions that drive innovation and efficiency across the organisation. * Lead a cross-functional AI engineering team, providing technical and team leadership for enterprise AI ...
FEATURED
Description - Join us, be part of more. We're so much more than an energy company. We're a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That's why working here is #MoreThanACareer. We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it. Centrica, Technology is a core driver of how we deliver our strategy. You'll join a team modernising our platforms, strengthening cyber and operational resilience, and advancing a product-led way of working that brings engineers, data specialists and business experts together to deliver ...
Description - Join us, be part of more. We're so much more than an energy company. We're a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That's why working here is #MoreThanACareer. We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it. Centrica, Technology is a core driver of how we deliver our strategy. You'll join a team modernising our platforms, strengthening cyber and operational resilience, and advancing a product-led way of working that brings engineers, data specialists and business experts together to deliver ...
PREMIUM
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We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the world's largest providers of products and services to the global energy industry. Job Duties - We are seeking a skilled Java developer with 3+ years experience for our Neftex Technical Services Team. Reporting to the Team Lead, you will contribute to the design, development, and maintenance of subsurface evaluation solutions across the energy sector. Successful candidates will be evidently enthusiastic and motivated people who we can train up in our processes and ultimately play a key role in quality assurance initiatives across different stakeholder groups. Minimum Qualifications
We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the world's largest providers of products and services to the global energy industry. Job Duties - We are seeking a skilled Java developer with 3+ years experience for our Neftex Technical Services Team. Reporting to the Team Lead, you will contribute to the design, development, and maintenance of subsurface evaluation solutions across the energy sector. Successful candidates will be evidently enthusiastic and motivated people who we can train up in our processes and ultimately play a key role in quality assurance initiatives across different stakeholder groups. Minimum Qualifications
Senior AI Engineer (LLMs, Python & Java)
Senior AI Engineer (LLMs, Python & Java)
Halian Technology Limited
Bracknell (RG12)
£95,000 per annum Bonus and benefits
Bracknell (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Bracknell (Hybrid) What if you could own and build the AI capability from the ground up in a scaling, purpose-driven tech company? Were hiring the first dedicated AI Engineer to join a fast-growing (~280 people) Healthtech organisation making a real-world impact. This is a rare opportunity to shape the AI strategy, design production-grade systems, and bring cutting-edge LLM-powered solutions into a live product environment. The Role - Youll sit at the intersection of AI, backend engineering, and cloud systems, designing and deploying intelligent features that directly impact users. * Design and implement LLM-based applications (RAG pipelines, agents, copilots) * Build scalable backend services using Python and Java * Integrate AI into existing cloud-native SaaS platforms * Own the full lifecycle: experimentation ? prototyping ? production
Related Jobs
Locations
- Winnersh
- Boyn Hill
- Abbotts Ann
- Camden
- Clay Hill
- Fenny Lock
- Frimley
- Lower Heyford
- Maidenhead Thicket
- New Town
- Reading
- Cheltenham
- Milton Keynes
- Uxbridge
- Birmingham
- Central London
- Oxford
- West End
- Maidenhead
- North West London
- London
- Berkshire
- Oxfordshire
- Buckinghamshire
- Gloucestershire
- Hertfordshire
- Hampshire
- West Midlands
- Northamptonshire
- Surrey
- South East
- Midlands
- South West
- East Midlands