Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
40 Permanent API jobs in South East + 20 miles
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
)
Are you an Engineer with a background in C++? Are you a Software Engineer looking for a new challenge or to join global multi billion dollar company? If so I'd like to speak with you! An exciting opportunity has arisen for a Software Developer - C++ based in Isle of Wight to join a market leading technology organisation. Due to continued growth they are seeking a Software Developer - C++ in their Isle of Wight office to be responsible for research, design, implementation and testing of software products and solutions. The Software Developer C++ will directly report to the Software Engineer Manager. * Develop easy-to-use web applications * Control automated testing, and manage their deployments * Collaborate with front-end and back-end teams to ensure front-end design integrate with the back-end systems * Writing front-end code * Rewrite front-end web pages
Are you an Engineer with a background in C++? Are you a Software Engineer looking for a new challenge or to join global multi billion dollar company? If so I'd like to speak with you! An exciting opportunity has arisen for a Software Developer - C++ based in Isle of Wight to join a market leading technology organisation. Due to continued growth they are seeking a Software Developer - C++ in their Isle of Wight office to be responsible for research, design, implementation and testing of software products and solutions. The Software Developer C++ will directly report to the Software Engineer Manager. * Develop easy-to-use web applications * Control automated testing, and manage their deployments * Collaborate with front-end and back-end teams to ensure front-end design integrate with the back-end systems * Writing front-end code * Rewrite front-end web pages
FEATURED
As a Senior Engineer in the Staines-upon-Thames based Graphics Research Team, you will play a key role in developing high-performance graphics solutions for mobile devices. You will integrate solutions with new hardware platforms optimise the Android OS graphics stack, benchmark systems against competitors to ensure the best possible graphics on the market. This is a fantastic opportunity to shape the future of mobile graphics and contribute to the next generation of mobile devices, while working with state-of-the-art technology. Key Responsibilities for the Senior Engineer * Innovate and optimise real-time rendering pipelines for exceptional performance. * Implement features and extensions for the Android Graphics stack (e.G., SurfaceFlinger, SKIA, HWUI). * Analyse graphics workloads, identify bottlenecks, and improve performance and power efficiency.
As a Senior Engineer in the Staines-upon-Thames based Graphics Research Team, you will play a key role in developing high-performance graphics solutions for mobile devices. You will integrate solutions with new hardware platforms optimise the Android OS graphics stack, benchmark systems against competitors to ensure the best possible graphics on the market. This is a fantastic opportunity to shape the future of mobile graphics and contribute to the next generation of mobile devices, while working with state-of-the-art technology. Key Responsibilities for the Senior Engineer * Innovate and optimise real-time rendering pipelines for exceptional performance. * Implement features and extensions for the Android Graphics stack (e.G., SurfaceFlinger, SKIA, HWUI). * Analyse graphics workloads, identify bottlenecks, and improve performance and power efficiency.
FEATURED
)
Staff Back End Engineer
Staff Back End Engineer
John Lewis Head Office
SW1V, South West London, SW1V 2QQ
Up to £94,200 per annum
REST API development and/or consumption.
REST API development and/or consumption.
NEW
)
Experience with API testing and integration
Experience with API testing and integration
)
Fire Service Site Engineer
Fire Service Site Engineer
Chubb Fire & Security Limited
BN1, Brighton
From £40,000 to £45,000 per annum
As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people.
As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people.
NEWFEATURED
)
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
NEWFEATURED
)
Technology Engineer – 9 Month FTC
Technology Engineer – 9 Month FTC
Saga Group
Sandgate, CT20 3SE
£40,000-£45,000 (depending on experience)
Experience with Microsoft Graph API.
Experience with Microsoft Graph API.
NEW
lastupdated - 10/22/2025 - jobtitle - Job Description - Role - Technical Test Lead - Technology - Test Automation Architect - Location - London, United Kingdom - Compensation - Competitive (including bonus) Today, the corporate landscape is dynamic and the world ahead is full of possibilities! None of the amazing things we do at Infosys would be possible without an equally amazing culture, the environment where ideas can flourish and where you are empowered to move forward as far as your ideas will take you. At Infosys, we assure that your career will never stand still, we will inspire you to build what's next and we will navigate further together. Our journey of learnability, values and trusted relationships with our clients continue to be the cornerstones of our organization and these values are upheld only because of our people. Your role
lastupdated - 10/22/2025 - jobtitle - Job Description - Role - Technical Test Lead - Technology - Test Automation Architect - Location - London, United Kingdom - Compensation - Competitive (including bonus) Today, the corporate landscape is dynamic and the world ahead is full of possibilities! None of the amazing things we do at Infosys would be possible without an equally amazing culture, the environment where ideas can flourish and where you are empowered to move forward as far as your ideas will take you. At Infosys, we assure that your career will never stand still, we will inspire you to build what's next and we will navigate further together. Our journey of learnability, values and trusted relationships with our clients continue to be the cornerstones of our organization and these values are upheld only because of our people. Your role
Design and implement complex data flows, API integrations, and background processing systems that handle high-volume operations reliably while maintaining system performance and data integrity * RESTful API design and implementation
Design and implement complex data flows, API integrations, and background processing systems that handle high-volume operations reliably while maintaining system performance and data integrity * RESTful API design and implementation
Lead the design and implementation of comprehensive quality strategies across platforms like Salesforce, Azure, and AWS, including test approaches (unit, integration, API, UI, performance, security, accessibility) and automation frameworks using C#, Python, Apex, and TypeScript. Proven test automation skills using tools like Selenium, Playwright, Cypress, pytest, xUnit/NUnit, or Jest for functional, integration, API, and end-to-end testing.
Lead the design and implementation of comprehensive quality strategies across platforms like Salesforce, Azure, and AWS, including test approaches (unit, integration, API, UI, performance, security, accessibility) and automation frameworks using C#, Python, Apex, and TypeScript. Proven test automation skills using tools like Selenium, Playwright, Cypress, pytest, xUnit/NUnit, or Jest for functional, integration, API, and end-to-end testing.
About the Opportunity - Our Solution Engineers are close partners of our sales team and own key components of the sales process including infrastructural/architectural discovery, collaborative solution design, and technical validation. Solution Engineers may travel up to 50% of the time and will have the opportunity to work with teams around the world, from visionary brands to innovative digital agencies. What to expect? * This is a customer-facing role and, as such, you should expect up to 50% of your time to be spent on travel to the office and/or customer locations. * Work directly with our Enterprise Account Executives to support DACH customers * Support our sales team in helping prospects understand whats possible with Contentful and how it compares to older legacy technologies * Understand prospects' project requirements, help prospects validate these requiremen
About the Opportunity - Our Solution Engineers are close partners of our sales team and own key components of the sales process including infrastructural/architectural discovery, collaborative solution design, and technical validation. Solution Engineers may travel up to 50% of the time and will have the opportunity to work with teams around the world, from visionary brands to innovative digital agencies. What to expect? * This is a customer-facing role and, as such, you should expect up to 50% of your time to be spent on travel to the office and/or customer locations. * Work directly with our Enterprise Account Executives to support DACH customers * Support our sales team in helping prospects understand whats possible with Contentful and how it compares to older legacy technologies * Understand prospects' project requirements, help prospects validate these requiremen
About the Opportunity - Join Contentfuls AI Platform team as a Senior Engineering Manager - AI Platform (f/m/d) and play a pivotal role in shaping the next generation of AI-powered, developer-friendly platform capabilities. Our AI Platform teams are building the trusted foundation that enables Contentful and our customers to confidently deliver AI-enabled experiences. * Empowering customers and internal teams to build accurate, trustworthy, and governed agentic solutions that are easy and intuitive to adopt. * Providing enterprise-ready access to LLMs that enables product teams across Contentful to deliver secure, scalable, and reliable AI-powered features. This is an excellent opportunity for a technical manager who thrives at the intersection of product development, platform engineering, and cross-functional collaboration.
About the Opportunity - Join Contentfuls AI Platform team as a Senior Engineering Manager - AI Platform (f/m/d) and play a pivotal role in shaping the next generation of AI-powered, developer-friendly platform capabilities. Our AI Platform teams are building the trusted foundation that enables Contentful and our customers to confidently deliver AI-enabled experiences. * Empowering customers and internal teams to build accurate, trustworthy, and governed agentic solutions that are easy and intuitive to adopt. * Providing enterprise-ready access to LLMs that enables product teams across Contentful to deliver secure, scalable, and reliable AI-powered features. This is an excellent opportunity for a technical manager who thrives at the intersection of product development, platform engineering, and cross-functional collaboration.
.Net Full Stack Engineer - Consultant/Senior Consultant - Digital Excellence
.Net Full Stack Engineer - Consultant/Senior Consultant - Digital Excellence
Capgemini Invent
London
Competitive
At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. Our C#/.NET Full Stack Engineers are responsible for creating the visions of our clients and driving better business outcomes. They are tasked with building cutting-edge digital solutions for our clients, combining a clear understanding of business value and a consultative approach to make the difference. They will be able to work on a vast variety of projects and get exposure to a variety of technology such as (but not
At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. Our C#/.NET Full Stack Engineers are responsible for creating the visions of our clients and driving better business outcomes. They are tasked with building cutting-edge digital solutions for our clients, combining a clear understanding of business value and a consultative approach to make the difference. They will be able to work on a vast variety of projects and get exposure to a variety of technology such as (but not
2 exact matches jobs are outside your preferred location
)
Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
FEATURED
Comprehensive understanding of pipeline industry standards (inc API, ASME, ASTM, BS, GIS, IGEM, PD)
Comprehensive understanding of pipeline industry standards (inc API, ASME, ASTM, BS, GIS, IGEM, PD)