OpenAPI Jobs in the UK

51 to 57 of 57 OpenAPI Jobs in the UK

Full Stack Engineer

high wycombe, south east england, united kingdom
Addition+
Technology is at the heart of this fast-growing digital bank — powering the systems that make business banking simpler, faster and smarter. This role is about setting the technical direction across payments, shaping scalable systems, and helping engineering teams deliver More ❯
Posted:

Senior Software Engineer - Building APIs - C# - .NET - SQL - Azure - AI

rugby, midlands, united kingdom
InterCity Partners Ltd
Development & Integration Build production-grade APIs using C# .NET, SQL, and Azure services Develop event-driven architectures and asynchronous communication patterns where appropriate Ensure APIs are well-documented using OpenAPI/Swagger standards Build and maintain a developer portal for internal and external API consumers Quality & Operations Implement comprehensive observability including logging, monitoring, and alerting Design for reliability, fault … similar services Authentication & authorization expertise with OAuth 2.0, JWT, API keys, and modern security patterns Testing mindset - you write unit tests and understand integration testing API documentation experience using OpenAPI/Swagger and maintaining developer portals Production systems mindset covering observability, reliability, and operational excellence Architectural thinking - ability to design systems for scale, security, and evolution Keywords RESTful APIs … C# .Net Azure AI LLM ML Machine Learning SaaS Scale Up OAuth 2.0 Service Bus OpenAPI Swagger More ❯
Posted:

Senior Software Engineer - Building APIs - C# - .NET - SQL - Azure - AI

Royal Leamington Spa, England, United Kingdom
InterCity Partners Ltd
Development & Integration Build production-grade APIs using C# .NET, SQL, and Azure services Develop event-driven architectures and asynchronous communication patterns where appropriate Ensure APIs are well-documented using OpenAPI/Swagger standards Build and maintain a developer portal for internal and external API consumers Quality & Operations Implement comprehensive observability including logging, monitoring, and alerting Design for reliability, fault … similar services Authentication & authorization expertise with OAuth 2.0, JWT, API keys, and modern security patterns Testing mindset - you write unit tests and understand integration testing API documentation experience using OpenAPI/Swagger and maintaining developer portals Production systems mindset covering observability, reliability, and operational excellence Architectural thinking - ability to design systems for scale, security, and evolution Keywords RESTful APIs … C# .Net Azure AI LLM ML Machine Learning SaaS Scale Up OAuth 2.0 Service Bus OpenAPI Swagger More ❯
Posted:

Lead Software Engineer – Azure / .NET

London, South East, England, United Kingdom
Arc IT Recruitment
approximately once a fortnight. Key Responsibilities: Design and deliver high-performance, public-facing REST APIs and system integrations within a modern Azure environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native … across Azure SQL, Cosmos DB, Service Bus, Function Apps, APIM, Front Door, Auth0, and WebSockets. Proven ability to design APIs from the ground up that follow REST principles and OpenAPI 3.x standards. Hands-on experience with Azure DevOps pipelines, automation, and performance tuning. A mindset focused on continuous improvement, security-first design, and delivery excellence. Degree in Computer Science More ❯
Employment Type: Full-Time
Salary: £95,000 - £105,000 per annum
Posted:

Technical Lead, C# and Azure

London Area, United Kingdom
ARC IT Recruitment
approximately once a fortnight. Key Responsibilities: Design and deliver high-performance, public-facing REST APIs and system integrations within a modern Azure environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native … across Azure SQL, Cosmos DB, Service Bus, Function Apps, APIM, Front Door, Auth0, and WebSockets. Proven ability to design APIs from the ground up that follow REST principles and OpenAPI 3.x standards. Hands-on experience with Azure DevOps pipelines, automation, and performance tuning. A mindset focused on continuous improvement, security-first design, and delivery excellence. Degree in Computer Science More ❯
Posted:

Technical Lead, C# and Azure

City of London, London, United Kingdom
ARC IT Recruitment
approximately once a fortnight. Key Responsibilities: Design and deliver high-performance, public-facing REST APIs and system integrations within a modern Azure environment. Produce API documentation that adheres to OpenAPI 3.x standards. Lead and mentor a small, focused development team, promoting collaboration, code quality, and technical excellence. Modernise legacy systems and drive the development of next-generation, cloud-native … across Azure SQL, Cosmos DB, Service Bus, Function Apps, APIM, Front Door, Auth0, and WebSockets. Proven ability to design APIs from the ground up that follow REST principles and OpenAPI 3.x standards. Hands-on experience with Azure DevOps pipelines, automation, and performance tuning. A mindset focused on continuous improvement, security-first design, and delivery excellence. Degree in Computer Science More ❯
Posted:

Senior Software Engineer - Building APIs - C# - .NET - SQL - Azure - AI

United Kingdom
InterCity Partners Ltd
Development & Integration Build production-grade APIs using C# .NET, SQL, and Azure services Develop event-driven architectures and asynchronous communication patterns where appropriate Ensure APIs are well-documented using OpenAPI/Swagger standards Build and maintain a developer portal for internal and external API consumers Quality & Operations Implement comprehensive observability including logging, monitoring, and alerting Design for reliability, fault … similar services Authentication & authorization expertise with OAuth 2.0, JWT, API keys, and modern security patterns Testing mindset - you write unit tests and understand integration testing API documentation experience using OpenAPI/Swagger and maintaining developer portals Production systems mindset covering observability, reliability, and operational excellence Architectural thinking - ability to design systems for scale, security, and evolution More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
OpenAPI
10th Percentile
£33,750
25th Percentile
£44,063
Median
£63,750
75th Percentile
£75,000
90th Percentile
£77,500