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149 Contract API jobs in Middlegreen + 20 miles
586 exact matches jobs are outside your preferred location
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Youll play a key role in running and evolving the banks Internal API Gateway platform a central service enabling secure, efficient, and scalable connectivity across the enterprise. * Act as a technical ambassador for our Internal API Gateway platform. * Join a small global SRE team managing the reliability and performance of the API platform. * Experience with Tyk API Gateway or similar API management platforms. * Work on a large-scale API ecosystem thats mission-critical to digital transformation.
Youll play a key role in running and evolving the banks Internal API Gateway platform a central service enabling secure, efficient, and scalable connectivity across the enterprise. * Act as a technical ambassador for our Internal API Gateway platform. * Join a small global SRE team managing the reliability and performance of the API platform. * Experience with Tyk API Gateway or similar API management platforms. * Work on a large-scale API ecosystem thats mission-critical to digital transformation.
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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.
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Strong expertise in MuleSoft Anypoint Platform (API Manager, Runtime, Exchange, CI/CD integration). o Proven experience in API-led integration design and implementation across hybrid and multi-cloud environments.
Strong expertise in MuleSoft Anypoint Platform (API Manager, Runtime, Exchange, CI/CD integration). o Proven experience in API-led integration design and implementation across hybrid and multi-cloud environments.
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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.
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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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.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
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The candidate will hold specialization in designing web applications, middleware/API layer and AWS.
The candidate will hold specialization in designing web applications, middleware/API layer and AWS.
Proven experience in API development and maintenance.
Proven experience in API development and maintenance.
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Back End Integration Engineer
Back End Integration Engineer
I3 Resourcing Limited
The City, EC3V 3ND
£70000 - £80000 per annum + + BENS + BONUS
Strong experience in application and integration design, including microservices architecture and API lifecycle management. o API Management, Service Bus, Logic Apps, Azure Functions
Strong experience in application and integration design, including microservices architecture and API lifecycle management. o API Management, Service Bus, Logic Apps, Azure Functions
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API integrations
API integrations
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Implement API integrations with external services * Proficient in Node.js, Git, and API integration
Implement API integrations with external services * Proficient in Node.js, Git, and API integration
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Senior Software Developer
Senior Software Developer
Inspire People
CR2, South Croydon
£49600 - £60800 per annum + 29% pension + Civil Service benefits
Solid understanding of system design, API development and integration practices
Solid understanding of system design, API development and integration practices
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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).
FEATURED
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API integrations with complex systems
API integrations with complex systems
Strong understanding of API integration and data flow between backend and frontend.
Strong understanding of API integration and data flow between backend and frontend.
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Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
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Microsoft Power Platform / Agentic AI Engineer
Microsoft Power Platform / Agentic AI Engineer
cer Financial
EC2M, City of London
£705 per day £705 per day (via Umbrella)
Microsoft 365 & Graph API Integration * Proficiency in Microsoft Graph API, Azure OpenAI, and Semantic Kernel
Microsoft 365 & Graph API Integration * Proficiency in Microsoft Graph API, Azure OpenAI, and Semantic Kernel
FEATURED
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Understanding of API authentication, rate limits, and error handling.
Understanding of API authentication, rate limits, and error handling.
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Knowledge of Microsoft Graph API, Azure AI Foundry, and Copilot integration is a strong plus.
Knowledge of Microsoft Graph API, Azure AI Foundry, and Copilot integration is a strong plus.
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Strong experience with Python and API frameworks (FastAPI, Flask, etc.)
Strong experience with Python and API frameworks (FastAPI, Flask, etc.)
FEATURED
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Principal Software Engineer – IOT & FULL-STACK
Principal Software Engineer – IOT & FULL-STACK
Gerrell & Hard
Bicester, Oxfordshire
Unspecified £competitive
Proficiency in API and cloud development (AWS/Azure, MQTT, WebSockets)
Proficiency in API and cloud development (AWS/Azure, MQTT, WebSockets)
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Integration, API Development and Databases Experience in designing, building and deploying event-driven and RESTful APIs, with foundational knowledge of SQL and relational database design, plus exposure to containerization tools like Docker and orchestration platforms like Kubernetes
Integration, API Development and Databases Experience in designing, building and deploying event-driven and RESTful APIs, with foundational knowledge of SQL and relational database design, plus exposure to containerization tools like Docker and orchestration platforms like Kubernetes
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Mainframe (where relevant): z/OS, CICS, IMS, VSAM, JCL, Control-M, rehost/refactor/API enablement.
Mainframe (where relevant): z/OS, CICS, IMS, VSAM, JCL, Control-M, rehost/refactor/API enablement.
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Web Developer (Laravel)
Web Developer (Laravel)
Rise Technical
Northampton, Northamptonshire
£26000.00 - £34000.00 per annum + Benefits
*Experience with Git version control and API integration
*Experience with Git version control and API integration
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Related Jobs
Locations
- Southwark
- The City, City (EC3)
- Charing Cross
- Datchet Common
- Euston
- Ireland
- The Borough
- The City, City (EC4)
- Canary Wharf
- Clerkenwell
- City of London
- South East London
- Reading
- Cambridge
- South West London
- Central London
- West End
- Milton Keynes
- East London
- North West London
- London
- Berkshire
- Cambridgeshire
- Surrey
- Buckinghamshire
- Hampshire
- Oxfordshire
- Hertfordshire
- Bedfordshire
- Northamptonshire
- South East
- East Anglia
- East Midlands
- Midlands
- South West