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69 Permanent API jobs in Brompton, South West London + 20 miles
231 exact matches jobs are outside your preferred location
Engineering London, United Kingdom - Apply - Description - Position at RetailMeNot - The Opportunity - We're looking for a Test Engineer to work as part of our Engineering team in London. You will be joining a team of 25+ engineers in the UK across web, mobile and data, within a global team of 50+ engineers. As a Test Engineer you will be ensuring features are tested in an automated fashion to ensure maximum coverage to give our users the best possible experience. You know how testing fits within an agile environment and have an excellent attention to detail and are passionate about quality. Your role will form part of our full stack agile teams collaborating with Product, UI and Backend engineers. * Maintaining and developing automated test suites, aiming for constant improvement * Preventing bugs and issues by thinking of relevant scenarios that can help meet the va
Engineering London, United Kingdom - Apply - Description - Position at RetailMeNot - The Opportunity - We're looking for a Test Engineer to work as part of our Engineering team in London. You will be joining a team of 25+ engineers in the UK across web, mobile and data, within a global team of 50+ engineers. As a Test Engineer you will be ensuring features are tested in an automated fashion to ensure maximum coverage to give our users the best possible experience. You know how testing fits within an agile environment and have an excellent attention to detail and are passionate about quality. Your role will form part of our full stack agile teams collaborating with Product, UI and Backend engineers. * Maintaining and developing automated test suites, aiming for constant improvement * Preventing bugs and issues by thinking of relevant scenarios that can help meet the va
About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
REST API design
REST API design
REST API design
REST API design
Full Stack Lead Developer with Dot NET CORE & Angular 16 + ( Mandatory) - LONDON BASED APPLICANTS- Fixed Term Contract Employee ( 4 days work from Office in London)
Full Stack Lead Developer with Dot NET CORE & Angular 16 + ( Mandatory) - LONDON BASED APPLICANTS- Fixed Term Contract Employee ( 4 days work from Office in London)
WNS Global Services Ltd
London
Competitive
WNS Global Services is looking to hire a seasoned Lead full-stack developer with exceptional skills in .NET Core, C#, SQL, Rest API, Microservices/micro frontend, Entity Framework, Angular (16+ version) and Azure for developing solution that aligns with Architecture, Security, Risk & Compliance requirements of the UK based wealth management client. * Exceptional skills in C# .NET, ASP.net CORE, Rest API and MVC, LINQ, Microservices/micro frontend, Entity Framework.
WNS Global Services is looking to hire a seasoned Lead full-stack developer with exceptional skills in .NET Core, C#, SQL, Rest API, Microservices/micro frontend, Entity Framework, Angular (16+ version) and Azure for developing solution that aligns with Architecture, Security, Risk & Compliance requirements of the UK based wealth management client. * Exceptional skills in C# .NET, ASP.net CORE, Rest API and MVC, LINQ, Microservices/micro frontend, Entity Framework.
Full Stack Lead Developer with Dot NET CORE & Angular 12 + ( Mandatory) - LONDON BASED APPLICANTS- Fixed Term Direct Contract ( 4 days work from Office in London)
Full Stack Lead Developer with Dot NET CORE & Angular 12 + ( Mandatory) - LONDON BASED APPLICANTS- Fixed Term Direct Contract ( 4 days work from Office in London)
WNS Global Services Ltd
London
Competitive
WNS Global Services is looking to hire a seasoned Lead full-stack developer with exceptional skills in .NET Core, C#, SQL, Rest API, Microservices/micro frontend, Entity Framework, Angular (16+ version) and Azure for developing solution that aligns with Architecture, Security, Risk & Compliance requirements of the UK based wealth management client. * Exceptional skills in C# .NET, ASP.net CORE, Rest API and MVC, LINQ, Microservices/micro frontend, Entity Framework.
WNS Global Services is looking to hire a seasoned Lead full-stack developer with exceptional skills in .NET Core, C#, SQL, Rest API, Microservices/micro frontend, Entity Framework, Angular (16+ version) and Azure for developing solution that aligns with Architecture, Security, Risk & Compliance requirements of the UK based wealth management client. * Exceptional skills in C# .NET, ASP.net CORE, Rest API and MVC, LINQ, Microservices/micro frontend, Entity Framework.
Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
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Large-scale data processing; data modeling; holistic, intent-based API design
Large-scale data processing; data modeling; holistic, intent-based API design
NEW
Web API Services
Web API Services
Understanding and/or experience in managing API-based software businesses
Understanding and/or experience in managing API-based software businesses
Extensive ability to read and understand and compile technical documentation (API documentation, ERD, functional specifications etc).
Extensive ability to read and understand and compile technical documentation (API documentation, ERD, functional specifications etc).
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Skilled in AWS (ECS, Lambda, API Gateway, S3, etc.) or similar cloud environments.
Skilled in AWS (ECS, Lambda, API Gateway, S3, etc.) or similar cloud environments.
Understanding of REST API design
Understanding of REST API design
Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
NEW
Technical Proficiency : Knowledge of API-driven platforms, understanding of developer ecosystems, and experience with tools such as JIRA.
Technical Proficiency : Knowledge of API-driven platforms, understanding of developer ecosystems, and experience with tools such as JIRA.
NEW
Exposure to MACH architecture (Microservices, API-first, Cloud-native, Headless) is highly advantageous.
Exposure to MACH architecture (Microservices, API-first, Cloud-native, Headless) is highly advantageous.
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In this critical role, youll develop and maintain REST API over serverless functions using TypeScript; youll also design and implement scalable PostgreSQL schemas and data models. Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.
In this critical role, youll develop and maintain REST API over serverless functions using TypeScript; youll also design and implement scalable PostgreSQL schemas and data models. Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.
NEW
Detect security weaknesses across API's, Applications and Infrastructure
Detect security weaknesses across API's, Applications and Infrastructure
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Deep understanding of API technologies (REST, GraphQL, XML-RPC)
Deep understanding of API technologies (REST, GraphQL, XML-RPC)
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Familiarity with API integrations, JSON, and data structures
Familiarity with API integrations, JSON, and data structures
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Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
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Design, build and maintain data-intensive web applications and API-driven systems
Design, build and maintain data-intensive web applications and API-driven systems
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Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
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Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
NEW
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Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
NEW
Related Jobs
Locations
- The City, City (EC4)
- White Hill
- Southwark
- The City, City (EC2)
- The City, City (EC3)
- Campden Hill
- Euston
- Fishery
- Kennington
- Mayfair
- City of London
- Reading
- Cambridge
- Central London
- South East London
- West End
- Milton Keynes
- Bexhill-On-Sea
- Abingdon
- Oxford
- London
- Berkshire
- Cambridgeshire
- Oxfordshire
- Buckinghamshire
- Hampshire
- East Sussex
- Surrey
- Hertfordshire
- Bedfordshire
- South East
- East Anglia