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128 Permanent API jobs in City of London + 20 miles
716 exact matches jobs are outside your preferred location
Hybrid - 50/50 Home and Office (Capenhurst) Join a global, independent provider of end-to-end power engineering solutions, supporting clients in managing and operating electrical networks. This is a well-established, innovation-led organisation with a strong, values-driven culture. You'll be joining a friendly and welcoming team that thrives on solving complex challenges together. If you're an experienced Senior Full-Stack Software Developer looking to make a real impact and be part of something meaningful, we'd love to hear from you. As a Senior Full-Stack Developer, you'll play a critical role in designing, building, and maintaining scalable, high-performance cloud web applications. Your contributions will directly shape the future of our digital platforms. C#, .NET 8, TypeScript, and React - Azure environments - Provide mentorship and technical guidance to junior d
Hybrid - 50/50 Home and Office (Capenhurst) Join a global, independent provider of end-to-end power engineering solutions, supporting clients in managing and operating electrical networks. This is a well-established, innovation-led organisation with a strong, values-driven culture. You'll be joining a friendly and welcoming team that thrives on solving complex challenges together. If you're an experienced Senior Full-Stack Software Developer looking to make a real impact and be part of something meaningful, we'd love to hear from you. As a Senior Full-Stack Developer, you'll play a critical role in designing, building, and maintaining scalable, high-performance cloud web applications. Your contributions will directly shape the future of our digital platforms. C#, .NET 8, TypeScript, and React - Azure environments - Provide mentorship and technical guidance to junior d
Restful API Services experience
Restful API Services experience
Strong knowledge of enterprise integration patterns, API design, and service-oriented architecture concepts
Strong knowledge of enterprise integration patterns, API design, and service-oriented architecture concepts
Basic SQL and REST API testing knowledge
Basic SQL and REST API testing knowledge
Concepts: Practical understanding of LLMs, intelligent search (e.g., Microsoft Graph API, AI-powered search), and Robotic Process Automation (RPA) tools (e.g., UiPath, Automation Anywhere).
Concepts: Practical understanding of LLMs, intelligent search (e.g., Microsoft Graph API, AI-powered search), and Robotic Process Automation (RPA) tools (e.g., UiPath, Automation Anywhere).
API design, usage and specification
API design, usage and specification
Proficiency in AWS services and serverless architecture including Lambda, API gateway, Elastic Beanstalk, EC2, S3, Aurora, Security Groups, and CloudWatch.
Proficiency in AWS services and serverless architecture including Lambda, API gateway, Elastic Beanstalk, EC2, S3, Aurora, Security Groups, and CloudWatch.
Strong knowledge of REST API design and WebSockets
Strong knowledge of REST API design and WebSockets
Experience with training pipeline optimization, inference optimization, LLM observability and LLM API management
Experience with training pipeline optimization, inference optimization, LLM observability and LLM API management
Knowledge of RESTful web services and API design
Knowledge of RESTful web services and API design
Azure : Azure SQL, Azure Entra ID, Azure DevOps, Azure Container Apps, API Management Services, Azure Functions
Azure : Azure SQL, Azure Entra ID, Azure DevOps, Azure Container Apps, API Management Services, Azure Functions
Proven experience in full-stack .NET development (C#/ASP.NET MVC/Web API).
Proven experience in full-stack .NET development (C#/ASP.NET MVC/Web API).
You are a collaborative Software Engineer with proven professional experience in Javascript/Typescript , React , and Node.JS , you possess a strong understanding of API design, consumption, and client-side logic.
You are a collaborative Software Engineer with proven professional experience in Javascript/Typescript , React , and Node.JS , you possess a strong understanding of API design, consumption, and client-side logic.
NEW
RESTful API development
RESTful API development
NEW
Desirable experience includes mobile app development, cloud platforms (e.g. Azure), CI/CD pipelines, data integration, and API development though were most interested in your ability to deliver great solutions and grow with the role.
Desirable experience includes mobile app development, cloud platforms (e.g. Azure), CI/CD pipelines, data integration, and API development though were most interested in your ability to deliver great solutions and grow with the role.
You will be allocated to a product team working on specific applications, which could include assets and metering products, API's, JSON and REST, new cloud microservices developments - there's a lot here to keep you busy. C#, .NET Framework, .NET Core, ASP.NET (core), API's RESTful Services, JSON, Docker, GIT (Bitbucket), OOP, SOLID, Cloud deployment and microservices, NoSQL and Oracle (SQL PL/SQL), AWS & Azure
You will be allocated to a product team working on specific applications, which could include assets and metering products, API's, JSON and REST, new cloud microservices developments - there's a lot here to keep you busy. C#, .NET Framework, .NET Core, ASP.NET (core), API's RESTful Services, JSON, Docker, GIT (Bitbucket), OOP, SOLID, Cloud deployment and microservices, NoSQL and Oracle (SQL PL/SQL), AWS & Azure
Familiarity with major paid search platforms, such as Google Ads, Bing Ads, Apple Search Ads and experience working with the Google / Bing Ads API.
Familiarity with major paid search platforms, such as Google Ads, Bing Ads, Apple Search Ads and experience working with the Google / Bing Ads API.
API integrations and middleware awareness
API integrations and middleware awareness
We do this by transforming how school data is maintained, managed and accessed by third-party applications (apps) via our simple API platform.
We do this by transforming how school data is maintained, managed and accessed by third-party applications (apps) via our simple API platform.
Related Jobs
Locations
- London
- Central London
- Canary Wharf
- South East London
- East London
- North London
- Moorgate, City of London
- North West London
- South Kensington
- West End
- South East
- Manchester
- Leeds
- Birmingham
- Cambridge
- Bristol
- East Midlands
- Essex
- Bournemouth
- Cambridgeshire
- Glasgow
- Guildford
- Newcastle Upon Tyne
- South West London
- Derby
- Surrey
- North East
- Nottingham
- Milton Keynes
- Cardiff
- Hampshire
- Yorkshire
- Portsmouth
- Peterborough
- Brighton
- Hertfordshire
- Kent
- Southampton
- Lancashire
- Slough
- Wolverhampton
- Reading
- Cheltenham
- Nottinghamshire
- West London
- North West
- Bedford
- County Antrim
- Woking
- Bath