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Locations
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Salaries
Date posted
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60 Permanent API jobs in Welwyn Garden City + 20 miles
709 exact matches jobs are outside your preferred location
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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.
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Strong scripting and integration skills - JavaScript, SQL, API/Web Services.
Strong scripting and integration skills - JavaScript, SQL, API/Web Services.
PREMIUM
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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
FEATURED
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Skills: C#.Net, XML / JSON API's, SC & NPPV3 Clearance
Skills: C#.Net, XML / JSON API's, SC & NPPV3 Clearance
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Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and 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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Integration, API Development and Databases Experience in designing, building and deploying RESTful and event-driven 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 RESTful and event-driven 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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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)
Applications Support Analyst/Developer
Applications Support Analyst/Developer
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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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
Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
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API integrations with complex systems
API integrations with complex systems
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API: Vulkan, OpenGL, Metal, DirectX11 or 12 and/or OpenCL.
API: Vulkan, OpenGL, Metal, DirectX11 or 12 and/or OpenCL.
Microsoft Graph API understanding for advanced integrations * Experience with SharePoint REST API and modern development practices
Microsoft Graph API understanding for advanced integrations * Experience with SharePoint REST API and modern development practices
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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).
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RESTful API development experience.
RESTful API development experience.
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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
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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.
Design and develop new features of 3D Graphics API. Drafting new API extensions and writing specification.
Design and develop new features of 3D Graphics API. Drafting new API extensions and writing specification.
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Deep understanding of RESTful API design and integration
Deep understanding of RESTful API design and integration
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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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Lead Software Engineer – Azure / .NET
Lead Software Engineer – Azure / .NET
ARC IT Recruitment Ltd
SW1Y, South West London
£Competitive + 20% bonus + excellent benefits
Azure, C#, .NET, API * Produce API documentation that adheres to OpenAPI 3.x standards. * Extensive experience in C#, .NET, SQL, and enterprise-grade API design.
Azure, C#, .NET, API * Produce API documentation that adheres to OpenAPI 3.x standards. * Extensive experience in C#, .NET, SQL, and enterprise-grade API design.
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