351 to 375 of 387 API Development Jobs in England

from day one of employment- Enhanced paid sick leave and paid family leave provisions- Eye care and winter flu jabs vouchers- Cycle to work scheme- Investing in your professional development with ongoing quality training and career development opportunitiesThis is a brilliant opportunity for a talented software engineer who’s confident working with Node.js, TypeScript, and PostgreSQL to join … our services to ensure they are world-class and contribute to supporting the hundreds of thousands of people we serve.In this critical role, you’ll develop and maintain REST API over serverless functions using TypeScript; you’ll also design and implement scalable PostgreSQL schemas and data models.The integrations you’ll be involved with will connect us to external services … date for this role is Sunday 9th November 2025.Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.Our commitment to Equality, Diversity & Inclusion:We are happy to consider any reasonable adjustments that candidates may need during the recruitment process and you will be asked whether you More ❯

from day one of employment - Enhanced paid sick leave and paid family leave provisions - Eye care and winter flu jabs vouchers - Cycle to work scheme - Investing in your professional development with ongoing quality training and career development opportunities This is a brilliant opportunity for a talented software engineer whos confident working with Node.js, TypeScript, and PostgreSQL to join … our services to ensure they are world-class and contribute to supporting the hundreds of thousands of people we serve. 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. The integrations youll be involved with will connect us to external services, including … for this role is Sunday 9th November 2025. Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer. Our commitment to Equality, Diversity & Inclusion: We are happy to consider any reasonable adjustments that candidates may need during the recruitment process and you will be asked whether More ❯

a collaborative, growing IT team that’s dedicated to building and improving bespoke in-house software solutions that power the business. You’ll be part of a seven-person Development team based in Leeds, working closely with end users to create tailored tools that make a real impact. A key focus will be enhancing a large-scale, internally built … user experience. The team has also developed a proprietary document management system, with plenty of exciting new projects and enhancements planned on the roadmap. Main Responsibilities Join an established development team building and maintaining core systems, applications, and APIs. Participate in planning, design, and development processes, ideally with experience using the Laravel framework or another MVC framework. Build … interfaces. Comfortable working iteratively and incorporating feedback within Agile workflows. Strong organisational skills with the ability to manage multiple projects and deadlines. Desirable Skills and Experience Knowledge of REST API development. Experience with PHP Unit and/or PEST for unit and feature testing. Familiarity with Docker. More ❯

a collaborative, growing IT team that’s dedicated to building and improving bespoke in-house software solutions that power the business. You’ll be part of a seven-person Development team based in Leeds, working closely with end users to create tailored tools that make a real impact. A key focus will be enhancing a large-scale, internally built … user experience. The team has also developed a proprietary document management system, with plenty of exciting new projects and enhancements planned on the roadmap. Main Responsibilities Join an established development team building and maintaining core systems, applications, and APIs. Participate in planning, design, and development processes, ideally with experience using the Laravel framework or another MVC framework. Build … interfaces. Comfortable working iteratively and incorporating feedback within Agile workflows. Strong organisational skills with the ability to manage multiple projects and deadlines. Desirable Skills and Experience Knowledge of REST API development. Experience with PHP Unit and/or PEST for unit and feature testing. Familiarity with Docker. More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software … out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software … out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software … out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software … out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯

Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software … out, designing and developing of UI screens for the users. This will require you to have client facing experience as well as low levy programming with JavaScript and React Development experience. Their systems cover all asset classes from FX, Fixed Income, Interest Rates and Commodities including derivative products although this knowledge is not essential but would be advantageous. The … Stack: Extensive React UI Development. Solid JavaScript programming Experience with Typescript Experience with Data Visualisation development. HTML and C55 Experience in Real Time trading application. Experience with GraphQL RESTful API development. BSc with Computer Science, Engineering or Mathematics. Experience with Financial Services, Fintech or Trading environment. With a generous Basic Salary there is also a very healthy bonus scheme More ❯

cloud services is advantageous. Microservices and Distributed Systems : Deep understanding of microservices architecture and distributed systems, including knowledge of Back-end For Front-end (BFF) architecture (a plus). API Design and Development : Solid experience in designing and developing RESTful APIs, ensuring they are scalable, secure, and efficient. More ❯

cloud services is advantageous. Microservices and Distributed Systems : Deep understanding of microservices architecture and distributed systems, including knowledge of Back-end For Front-end (BFF) architecture (a plus). API Design and Development : Solid experience in designing and developing RESTful APIs, ensuring they are scalable, secure, and efficient. More ❯

cloud services is advantageous. Microservices and Distributed Systems : Deep understanding of microservices architecture and distributed systems, including knowledge of Back-end For Front-end (BFF) architecture (a plus). API Design and Development : Solid experience in designing and developing RESTful APIs, ensuring they are scalable, secure, and efficient. More ❯

cloud services is advantageous. Microservices and Distributed Systems : Deep understanding of microservices architecture and distributed systems, including knowledge of Back-end For Front-end (BFF) architecture (a plus). API Design and Development : Solid experience in designing and developing RESTful APIs, ensuring they are scalable, secure, and efficient. More ❯

cloud services is advantageous. Microservices and Distributed Systems : Deep understanding of microservices architecture and distributed systems, including knowledge of Back-end For Front-end (BFF) architecture (a plus). API Design and Development : Solid experience in designing and developing RESTful APIs, ensuring they are scalable, secure, and efficient. More ❯

AI and ML to drive automation, enhance decision-making, and scale a fully automated global trading platform. This is a unique opportunity to work at the intersection of quantitative development, AI, and crypto trading. You'll collaborate with Researchers, Traders, and Engineers to build intelligent systems that power 24/7 trading strategies, with full ownership from design to … datasets and build intelligent data pipelines to support research and execution. Monitor and manage the lifecycle of AI-driven systems in production environments. Requirements 6+ years of professional software development experience, ideally in a quantitative or trading environment. Strong Python programming skills and a solid foundation in statistics and machine learning. Proven experience delivering production-grade AI/ML … LLMs and anomaly detection models. Familiarity with cloud infrastructure (AWS preferred), container orchestration (Kubernetes), and workflow tools (Airflow, Argo). Experience with observability tools (e.g., Grafana, CloudWatch) and RESTful API development. More ❯

AI and ML to drive automation, enhance decision-making, and scale a fully automated global trading platform. This is a unique opportunity to work at the intersection of quantitative development, AI, and crypto trading. You'll collaborate with Researchers, Traders, and Engineers to build intelligent systems that power 24/7 trading strategies, with full ownership from design to … datasets and build intelligent data pipelines to support research and execution. Monitor and manage the lifecycle of AI-driven systems in production environments. Requirements 6+ years of professional software development experience, ideally in a quantitative or trading environment. Strong Python programming skills and a solid foundation in statistics and machine learning. Proven experience delivering production-grade AI/ML … LLMs and anomaly detection models. Familiarity with cloud infrastructure (AWS preferred), container orchestration (Kubernetes), and workflow tools (Airflow, Argo). Experience with observability tools (e.g., Grafana, CloudWatch) and RESTful API development. More ❯

AI and ML to drive automation, enhance decision-making, and scale a fully automated global trading platform. This is a unique opportunity to work at the intersection of quantitative development, AI, and crypto trading. You'll collaborate with Researchers, Traders, and Engineers to build intelligent systems that power 24/7 trading strategies, with full ownership from design to … datasets and build intelligent data pipelines to support research and execution. Monitor and manage the lifecycle of AI-driven systems in production environments. Requirements 6+ years of professional software development experience, ideally in a quantitative or trading environment. Strong Python programming skills and a solid foundation in statistics and machine learning. Proven experience delivering production-grade AI/ML … LLMs and anomaly detection models. Familiarity with cloud infrastructure (AWS preferred), container orchestration (Kubernetes), and workflow tools (Airflow, Argo). Experience with observability tools (e.g., Grafana, CloudWatch) and RESTful API development. More ❯

AI and ML to drive automation, enhance decision-making, and scale a fully automated global trading platform. This is a unique opportunity to work at the intersection of quantitative development, AI, and crypto trading. You'll collaborate with Researchers, Traders, and Engineers to build intelligent systems that power 24/7 trading strategies, with full ownership from design to … datasets and build intelligent data pipelines to support research and execution. Monitor and manage the lifecycle of AI-driven systems in production environments. Requirements 6+ years of professional software development experience, ideally in a quantitative or trading environment. Strong Python programming skills and a solid foundation in statistics and machine learning. Proven experience delivering production-grade AI/ML … LLMs and anomaly detection models. Familiarity with cloud infrastructure (AWS preferred), container orchestration (Kubernetes), and workflow tools (Airflow, Argo). Experience with observability tools (e.g., Grafana, CloudWatch) and RESTful API development. More ❯

Senior API Engineer - PHP - 90k + Bonus - Full Remote. Were searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bandspretty cool, huh? This isnt your average More ❯

Senior API Engineer - PHP - £90k + Bonus - Full Remote. We re searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bands pretty cool, huh? Expect More ❯

Senior API Engineer - PHP - £90k + Bonus - Full Remote. We re searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bands pretty cool, huh? Expect More ❯

Senior API Engineer - PHP - 90k + Bonus - Full Remote. Were searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bandspretty cool, huh? This isnt your average More ❯

Senior API Engineer - PHP - 90k + Bonus - Full Remote. Were searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bandspretty cool, huh? This isnt your average More ❯

Senior API Engineer - PHP - £90k + Bonus - Full Remote. We’re searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bands—pretty cool, huh? This isn More ❯

Senior API Engineer - PHP - £90k + Bonus - Full Remote. We’re searching for a talented senior API developer with a background in building scalable web services around the PHP stack to join our team and dive into building a one-of-a-kind platform that manages finances for super yachts and touring bands—pretty cool, huh? This isn More ❯