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25 API jobs in Abingdon Science Park + 20 miles
427 exact matches jobs are outside your preferred location
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Senior API Technical Consultant (GraphQL Specialist)
Senior API Technical Consultant (GraphQL Specialist)
Staffworx Limited
London
market rates, outside IR35, 2 days on site
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
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C++ Software Engineer MacOS - Cyber Security
C++ Software Engineer MacOS - Cyber Security
Client Server
The City, EC4
£65000 - £80000 per annum + benefits
C++ Software Engineer / Developer (C++ Mac Extensions API) WFH / London to £80k - As a C++ Software Engineer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations. Apply now to find out more about this C++ Software Engineer / Developer (C++ Mac Extensions API) opportunity.
C++ Software Engineer / Developer (C++ Mac Extensions API) WFH / London to £80k - As a C++ Software Engineer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations. Apply now to find out more about this C++ Software Engineer / Developer (C++ Mac Extensions API) opportunity.
NEWPREMIUM
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We are AMS. We are a global total workforce solutions firm; we enable organisations to thrive in an age of constant change by building, re-shaping, and optimising workforces. Our Contingent Workforce Solutions (CWS) is one of our service offerings; we act as an extension of our clients' recruitment team and provide professional interim and temporary resources. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking. On behalf of this organisation, AMS are looking for a Software Engineer (AI Prompts) for a 6 month contract based in either the bank's London or Edinburgh office on a remote first working model.
We are AMS. We are a global total workforce solutions firm; we enable organisations to thrive in an age of constant change by building, re-shaping, and optimising workforces. Our Contingent Workforce Solutions (CWS) is one of our service offerings; we act as an extension of our clients' recruitment team and provide professional interim and temporary resources. Our client, a major UK retail bank, provides every day banking services to over 17 million retail customers. The banks expertise and services span across Business Services, Corporate banking, Wealth Management, Group Functions, Retail and Investment Banking. On behalf of this organisation, AMS are looking for a Software Engineer (AI Prompts) for a 6 month contract based in either the bank's London or Edinburgh office on a remote first working model.
NEWFEATURED
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About the Business - Quilter plc is a leading wealth management business, helping to enable brighter financial futures for every generation. Quilter oversees £126.3 billion in customer investments (as of August 2025). It has an adviser and customer offering spanning financial advice, investment platforms, multi-asset investment solutions, and discretionary fund management. The business is comprised of two segments: Affluent and High Net Worth. Affluent encompasses the financial planning business, Quilter Financial Planning, the Quilter Investment Platform and Quilter Investors, the multi-asset investment solutions business. High Net Worth includes the discretionary fund management business, Quilter Cheviot, together with Quilter Cheviot Financial Planning offering a highly personalised service to private clients, charities, trustees, and professional partners.
About the Business - Quilter plc is a leading wealth management business, helping to enable brighter financial futures for every generation. Quilter oversees £126.3 billion in customer investments (as of August 2025). It has an adviser and customer offering spanning financial advice, investment platforms, multi-asset investment solutions, and discretionary fund management. The business is comprised of two segments: Affluent and High Net Worth. Affluent encompasses the financial planning business, Quilter Financial Planning, the Quilter Investment Platform and Quilter Investors, the multi-asset investment solutions business. High Net Worth includes the discretionary fund management business, Quilter Cheviot, together with Quilter Cheviot Financial Planning offering a highly personalised service to private clients, charities, trustees, and professional partners.
NEW
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Are you a C++ Software Developer? Do you have a minimum of 12 months commercial experience? If yes, then read on, and let us tell you why Synertec is adding real value into the Public and Commercial Sectors. Location: Wellington, Somerset OR Bristol, OR Milton Keynes - Salary: £40,196.18 - £51,680.11 DOE - Core Benefits: Hybrid Working Policy (2 days maximum in office), 25 days holiday rising to 30 (plus Bank Holidays), Company Pension Scheme (8% employer contribution) Health Cash Plan (after completion of Probationary Period) Embark on your journey with confidence through our Comprehensive Induction and Training Program. We invest in your professional development from day one, providing the tools and knowledge to excel in your role. Join us and experience a workplace that values your individuality and prioritises your well-being.
Are you a C++ Software Developer? Do you have a minimum of 12 months commercial experience? If yes, then read on, and let us tell you why Synertec is adding real value into the Public and Commercial Sectors. Location: Wellington, Somerset OR Bristol, OR Milton Keynes - Salary: £40,196.18 - £51,680.11 DOE - Core Benefits: Hybrid Working Policy (2 days maximum in office), 25 days holiday rising to 30 (plus Bank Holidays), Company Pension Scheme (8% employer contribution) Health Cash Plan (after completion of Probationary Period) Embark on your journey with confidence through our Comprehensive Induction and Training Program. We invest in your professional development from day one, providing the tools and knowledge to excel in your role. Join us and experience a workplace that values your individuality and prioritises your well-being.
NEWFEATURED
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We have partnered with a successful SaaS company based in Milton Keynes which are currently experiencing rapid growth and are partnering with major clients within their industry. They now have an exciting opportunity for a Software Developer skilled across the Microsoft Tech Stack - .NET Core, C#, ASP.NET, SQL, and Azure. The successful candidate will be working across the whole SDLC from inception through to design, implementation and deployment of their SaaS platform. This role is mostly onsite so candidates must be willing to travel to Milton Keynes a minimum of four days a week. * .NET Framework - C# .NET, .NET Core, ASP.NET Core * Entity Framework Core * Azure Cloud - Azure DevOps * JavaScript * RESTful APIs / Web APIs * Git - Benefits Package * Competitive Salary (DOE) * Flexi-hours * Private healthcare * Company car scheme * Social events and Company days out
We have partnered with a successful SaaS company based in Milton Keynes which are currently experiencing rapid growth and are partnering with major clients within their industry. They now have an exciting opportunity for a Software Developer skilled across the Microsoft Tech Stack - .NET Core, C#, ASP.NET, SQL, and Azure. The successful candidate will be working across the whole SDLC from inception through to design, implementation and deployment of their SaaS platform. This role is mostly onsite so candidates must be willing to travel to Milton Keynes a minimum of four days a week. * .NET Framework - C# .NET, .NET Core, ASP.NET Core * Entity Framework Core * Azure Cloud - Azure DevOps * JavaScript * RESTful APIs / Web APIs * Git - Benefits Package * Competitive Salary (DOE) * Flexi-hours * Private healthcare * Company car scheme * Social events and Company days out
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As an Associate Software Architect, you'll develop mobile software for web/hybrid interfaces and API backends, influencing organization-wide solutions. * Define API standards and integration patterns for scalable and secure communication.
As an Associate Software Architect, you'll develop mobile software for web/hybrid interfaces and API backends, influencing organization-wide solutions. * Define API standards and integration patterns for scalable and secure communication.
FEATURED
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Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP
Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP
FEATURED
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Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
PREMIUM
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.NET Framework Version 4.5 or above including strong WCF\ Web API experience
.NET Framework Version 4.5 or above including strong WCF\ Web API experience
NEW
Familiarity with microservices architecture, API design, and integration patterns.
Familiarity with microservices architecture, API design, and integration patterns.
FEATURED
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• API Knowledge: Experience with APIs, web services, and data exchange formats.
• API Knowledge: Experience with APIs, web services, and data exchange formats.
NEW
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API Knowledge: Experience with APIs, web services, and data exchange formats.
API Knowledge: Experience with APIs, web services, and data exchange formats.
NEW
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Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and API integrations
NEW
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QA Specialist - Hybrid Remote
QA Specialist - Hybrid Remote
VERTECH GROUP (UK) LTD
NW3, North West London
From £50,000 to £55,000 per annum + Benefits
Experience with API testing and familiarity with tools like Postman, SoapUI, or similar
Experience with API testing and familiarity with tools like Postman, SoapUI, or similar
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Applications Support Engineer
Applications Support Engineer
Kudos Partners
Datchet Common, SL3
£75,000 per annum plus 12% bonus - generous benefits package
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
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Front-End Developer, React.js, Hybrid, COR7367
Front-End Developer, React.js, Hybrid, COR7367
Corriculo Ltd
CV31, Leamington Spa
£65k - 80k per year + Benefits
Working closely with back-end teams, you’ll ensure seamless API integrations while optimising applications for performance, accessibility, and user experience. * Familiarity with TypeScript and RESTful API integration
Working closely with back-end teams, you’ll ensure seamless API integrations while optimising applications for performance, accessibility, and user experience. * Familiarity with TypeScript and RESTful API integration
NEW
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Strong Python & C# skills; API and cloud architecture experience (Azure a plus).
Strong Python & C# skills; API and cloud architecture experience (Azure a plus).
NEWFEATURED
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API integrations with complex systems
API integrations with complex systems
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Architect and design enterprise-level integration solutions, defining API-led connectivity, patterns, and specifications. * Proven expertise in MuleSoft Anypoint Platform (including Anypoint Studio, Flow Design, and API Manager). * Strong knowledge of API-led connectivity and integration patterns (REST, SOAP).
Architect and design enterprise-level integration solutions, defining API-led connectivity, patterns, and specifications. * Proven expertise in MuleSoft Anypoint Platform (including Anypoint Studio, Flow Design, and API Manager). * Strong knowledge of API-led connectivity and integration patterns (REST, SOAP).
NEW
RESTful API development experience.
RESTful API development experience.
NEW
Senior Back-End Developer, Java Spring Boot, Hybrid, COR7370
Senior Back-End Developer, Java Spring Boot, Hybrid, COR7370
Corriculo Ltd
CV31, Leamington Spa
£65k - 80k per year + Benefits
A solid understanding of RESTful API development and microservices
A solid understanding of RESTful API development and microservices
NEW
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Develop, deploy, and monitor cloud solutions using AWS (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3) * Strong grasp of distributed systems, API security (OAuth, API keys, JWT), and Apigee/APIM platforms
Develop, deploy, and monitor cloud solutions using AWS (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3) * Strong grasp of distributed systems, API security (OAuth, API keys, JWT), and Apigee/APIM platforms
NEW
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Senior Test Analyst - Collateral Management, Algo
Senior Test Analyst - Collateral Management, Algo
Harvey Nash
City of London, London
£600 - £640 per day
Experience testing interfaces (inbound/outbound), including file-based and API integrations.
Experience testing interfaces (inbound/outbound), including file-based and API integrations.
Strong understanding of API integration and data flow between backend and frontend.
Strong understanding of API integration and data flow between backend and frontend.
Related Jobs
Locations
- Southwark
- The City, City (EC4)
- Charing Cross
- West Fields
- Euston
- Ireland
- The Borough
- The City, City (EC3)
- Bath Spa, Bath (BA2)
- Beeches Industrial Estate
- City of London
- Reading
- South East London
- Central London
- West End
- Milton Keynes
- Northampton
- South West London
- North West London
- Bedford
- London
- Berkshire
- Buckinghamshire
- Oxfordshire
- Gloucestershire
- Northamptonshire
- Bedfordshire
- Hampshire
- Surrey
- Wiltshire
- South East
- South West
- Midlands
- East Midlands
- West Midlands