26 to 50 of 269 API Development Jobs in the UK

Healthcare sectors . They are now looking for a talented Senior Full Stack Developer to join their engineering team and contribute to the continued development of their platform, editor and supporting cloud services. Responsibilities: Build and deliver new functionality across the core platform and React-based editor , supporting … discovery, sprint planning, roadmap discussions, demonstrations and retrospectives Evaluate technical challenges and contribute to architectural decisions and system improvements Diagnose and resolve application and API issues across both local and cloud-based environments Improve the performance, reliability and security of applications and services Contribute to the evolution ...

perfect time to join us! About the RoleLevel:4Department: TechnologyLocation: London I SouthamptonContract type: PermanentQuilter is building a new API and Integration Platform. As API Product Owner you will own the "what and when" of that platform, turning the API strategy into a prioritised, deliverable backlog … ensuring each API we build delivers real value to integrating organisations. You will work hand-in-glove with the Lead Integration Platform Architect (who owns the "how"), our engineering teams and our delivery partner, and you will play a central role in proving the platform through priority business ...

engineering teams and to customers. You will work across that whole span: from LoRaWAN and Modbus device decoding, through time‐series analytics, to the API and UI that engineers use every day. This is a hands‐on senior engineering role. You will own features end to end: design, implement … retention. Build and maintain the front end , a React 18/TypeScript single‐page application built with Vite, backed by a backend‐for‐frontend API, including accessibility, internationalisation and performance. Own the infrastructure as code for the services you build, using Terraform and Bicep, and extend the Azure DevOps ...

engineering teams and to customers. You will work across that whole span: from LoRaWAN and Modbus device decoding, through time‐series analytics, to the API and UI that engineers use every day. This is a hands‐on senior engineering role. You will own features end to end: design, implement … retention. Build and maintain the front end , a React 18/TypeScript single‐page application built with Vite, backed by a backend‐for‐frontend API, including accessibility, internationalisation and performance. Own the infrastructure as code for the services you build, using Terraform and Bicep, and extend the Azure DevOps ...

Hadleigh, Essex – Hybrid (2 days office/3 days home) We’re looking for a PHP/Laravel Developer to join a small, established development team supporting a growing organisation. This is a great opportunity for someone with around 2+ years of commercial development experience who has strong … highly senior developer, but you should be comfortable working on production applications, picking up existing codebases and contributing without significant hand‐holding. The development team is increasingly embracing AI‐assisted software development, with Claude Code and Anthropic models being used throughout the development process. We’re therefore ...

engineering direction of products used by thousands of organisations across the UK and internationally. This is an opportunity to combine hands-on software development with technical leadership, working with modern Microsoft technologies, AI-assisted development tools, and cloud-native architectures. Your Team You’ll work within a collaborative … across both our engineering practices and products. You'll have the opportunity to leverage tools such as GitHub Copilot while contributing to the development of intelligent capabilities within our SaaS platform. Beyond delivering great software, you’ll help mentor others, contribute to technical decision‐making, and influence ...

looking for a Senior Full-Stack Developer to play a pivotal role in leading the design, development, and deployment of complex software solutions. You will architect and maintain data engineering pipelines, backend services, APIs, demonstrate consideration for design and UI/UX when building user interfaces, delivering reliable … required, which means candidates applying for this role should either hold it or be eligible to obtain it. KEY RESPONSIBILITIES: Contribute to the design, development, and deployment of robust software solutions, promoting best practices throughout the software development lifecycle Contribute to architecting and maintaining complex data engineering pipelines ...

looking for a Senior Full-Stack Developer to play a pivotal role in leading the design, development, and deployment of complex software solutions. You will architect and maintain data engineering pipelines, backend services, APIs, demonstrate consideration for design and UI/UX when building user interfaces, delivering reliable … required, which means candidates applying for this role should either hold it or be eligible to obtain it. KEY RESPONSIBILITIES: Contribute to the design, development, and deployment of robust software solutions, promoting best practices throughout the software development lifecycle Contribute to architecting and maintaining complex data engineering pipelines ...

looking for a Senior Full-Stack Developer to play a pivotal role in leading the design, development, and deployment of complex software solutions. You will architect and maintain data engineering pipelines, backend services, APIs, demonstrate consideration for design and UI/UX when building user interfaces, delivering reliable … databases, and containerisation (Docker). If this sounds like you, we can't wait to hear from you! KEY RESPONSIBILITIES: Contribute to the design, development, and deployment of robust software solutions, promoting best practices throughout the software development lifecycle Contribute to architecting and maintaining complex data engineering pipelines ...

mobile applications that support an evolving digital strategy. The Role As a Digital Application Developer, you'll be involved in the full software development lifecycle, working closely with product, design and engineering teams to deliver secure, scalable and user-focused digital solutions. You'll contribute to the development … Skills & Experience We're interested in speaking with candidates who have experience in some of the following areas: React, TypeScript and modern JavaScript development Mobile application development using iOS and/or Android technologies API development and systems integration Software design principles and application architecture ...

collaborative environment that fosters continuous learning and creativity. If you are passionate about machine learning, AI, and want to contribute to the platform capability development for our whole organization, we invite you to apply for the position of Technology Architecture in our AI Enablement Team.Job responsibilities:Software Development … field (Ph.D. preferred) with Proven experience of 7+ years in developing IT solutionsProficient in Python & ReactJS and related technologies is required.Experience with GenAI application development including vector stores, RAG solutions, context engineering, prompt engineering, observability is essentialExperience with Agentic AI development & Java Spring Framework would be advantageousUnderstanding ...

GenAI projects.As a Senior Developer, you will be at the driving innovation and delivering cutting-edge solutions. Your expertise will contribute to the development of our platform, shaping its capabilities and providing impactful solutions.Join our dynamic team and be part of a collaborative environment that fosters continuous learning … creativity. If you are passionate about machine learning, AI, and want to contribute to the platform capability development for our whole organization, we invite you to apply for the position of Technology Architecture in our AI Enablement Team.**Job responsibilities:*** Software Development: Design, develop, and maintain applications. Write ...

applications and user-facing digital platforms.Build, support, and enhance APIs and backend services using .NET/C# and Node.js. Work with AWS Lambda and API Gateway to support serverless application development. Develop and maintain integrations between Salesforce and internal systems using Celigo. Write, optimise, and troubleshoot SQL queries, stored … procedures, and database processes. Support Salesforce development using Apex and Aura Components. Deliver responsive, accessible, and high-performing front-end experiences. Implement designs from internal and external creative teams. Create and maintain HTML email templates for both B2C and B2B communications. Integrate third-party services and social media platforms ...

develop and maintain secure, scalable and high-performance enterprise web applications. The ideal candidate must have hands-on experience in backend engineering, frontend architecture, API development, event-driven systems, databases, containerization, testing and CI/CD. The role also requires strong ownership, technical problem-solving, collaboration and mentoring … capabilities. Job Requirements Bachelors degree in Computer Science, Engineering or a related field, or equivalent education and professional experience. Minimum 10 years of software development experience with strong full stack application development exposure. Strong hands-on experience in Java-based backend development. Excellent proficiency in Spring Boot, Spring ...

OpenAI technologies to real-world cyber use cases, ensuring solutions are secure, responsible, measurable and aligned to operational requirements. Key Skills OpenAI platform and API development Large Language Models (LLMs) and Generative AI Prompt engineering and prompt optimisation Retrieval-Augmented Generation (RAG) implementation Agentic AI and multi-agent … orchestration AI assistant and copilot development Python development and AI frameworks Vector databases and knowledge retrieval SOC processes and cyber security operations understanding Evaluation frameworks and model performance testing Responsible AI and AI safety controls Integration with SIEM, SOAR and cyber platforms Secure software engineering and API ...

Description My client, a growing Belfast-based telecommunications and technology organisation , is hiring an API Engineer to join their existing technology team. This is an excellent opportunity for an experienced Backend/API Developer to work across a varied technology environment, developing integrations and APIs that support hosted … business-system integrations , providing the successful candidate with the opportunity to work on a diverse range of technology and integration projects. As an API Engineer , you will design, develop and maintain robust APIs and backend services that enable Clarity's internal platforms, customer systems and third-party applications ...

Framework and .NET Core, proficient in developing and maintaining complex web applications, APIs, and client interfaces. You will be responsible for the full software development lifecycle, including design, development, testing, deployment, and maintenance. Job Description: - Develop and maintain EPM Client applications using .NET 4.8, Visual Studio … Database. - Design and implement EPM Web Page and API using .NET Core 7.0 and Blazor Server Pages. - Ensure the web applications and APIs are hosted and managed effectively using Rancher Kubernetes and Docker Clusters. - Perform database access and management for web pages via API clients and Entity Framework. ...

data services, and cloud platforms. You will own end-to-end integration architecture, champion modern engineering standards, and guide engineers through best practices in API design, cloud-native development, and scalable integration patterns. This is a hands-on leadership role, ideal for someone who enjoys coding, problem-solving … steering technical direction while mentoring engineers and collaborating with product, data, and platform teams. What You'll Be Doing Lead the design, development, and delivery of integration solutions across a diverse technology ecosystem Develop secure, scalable APIs, services, and messaging-based integrations Champion best practices in engineering, DevOps, automation ...

driven workflows, network intelligence, and service assurance capabilities. The Digital Transformation Technical Authority will own technical decisions and will work across the full software development lifecycle, from requirements analysis and solution design through to deployment, support, and continuous improvement. The role combines hands‐on software engineering with technical leadership … maintain software applications, services, APIs, and automation workflows. Build high‐quality, reusable, maintainable, and scalable code following engineering best practices. Develop event‐driven and API‐enabled solutions supporting network and operational automation. Develop orchestration workflows, automation scripts, and integrations across multiple systems. Produce technical documentation, design artefacts, and implementation ...

driven workflows, network intelligence, and service assurance capabilities. The Digital Transformation Technical Authority will own technical decisions and will work across the full software development lifecycle, from requirements analysis and solution design through to deployment, support, and continuous improvement.The role combines hands-on software engineering with technical leadership, ensuring … maintain software applications, services, APIs, and automation workflows.* Build high-quality, reusable, maintainable, and scalable code following engineering best practices* Develop event-driven and API-enabled solutions supporting network and operational automation.* Develop orchestration workflows, automation scripts, and integrations across multiple systems.* Produce technical documentation, design artefacts, and implementation ...

ASP.NET Developer – FintechTech: C# .net, Azure, SQL, Team City, GIT, TFS Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known Insurtech software business, London, 10 man flat Dev Team Salary: 65,000Quant is urgently looking for an ASP.NET MVC Developer to join our high profile … client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is a well known fintech software house in central London. This is an expansionary role building a greenfield financial modelling platform used by major finance business'.Working together with our team ...

production‐grade software. This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud‐native services and data integration. Typical responsibilities include: Developing software services using languages such as Java, JavaScript, TypeScript, Python or C++ … platforms, data services and streaming technologies Implement monitoring, logging and observability to support live service operation Support secure deployment and operation of applications across development, test and production environments Skills Required Experience working within the UK Security & Intelligence, defence or other secure government environments Strong knowledge of modern software ...

production‐grade software. This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud‐native services and data integration. Typical responsibilities include: Developing software services using languages such as Java, JavaScript, TypeScript, Python or C++ … platforms, data services and streaming technologies Implement monitoring, logging and observability to support live service operation Support secure deployment and operation of applications across development, test and production environments Skills Required Experience working within the UK Security & Intelligence, defence or other secure government environments Strong knowledge of modern software ...

production‐grade software. This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud‐native services and data integration. Typical responsibilities include: Developing software services using languages such as Java, JavaScript, TypeScript, Python or C++ … platforms, data services and streaming technologies Implement monitoring, logging and observability to support live service operation Support secure deployment and operation of applications across development, test and production environments Skills Required Experience working within the UK Security & Intelligence, defence or other secure government environments Strong knowledge of modern software ...

Tech: ASP.NET MVC 5, Restful API, Angular, SQL, Azure Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known fintech50 business, 40 man flat Dev Team Pay: 120k, Bonus- 750 training budget, Pension, Life/Health, Some Flex Working Technical Architect FintechQuant is urgently looking … hands on Technical Architect to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is well known in the WRAP and SIPP market as a full service provider. The environment is that of Facebook or Google ...