1 to 25 of 98 API Development Jobs in the UK

services , supporting mobile applications within a large, regulated environment. Role Overview This role is hands-on and delivery-focused, requiring deep experience in RESTful API development , microservices architecture , and secure, scalable backend systems . You will work closely with engineers, security specialists, and product teams in an Agile … delivery model . Mandatory Skills & Experience Strong hands-on experience with Golang JAX-RS (Java API for RESTful Web Services) – mandatory Java, Microservices, Spring & Spring Boot Hands-on experience implementing microservices architectures REST API design and development Microservices authorization using OAuth 2.0 Java 8+, including multithreading Spring ...

Software Engineering developing, testing, and supporting web applications within a multi-disciplinary product team, providing technical skills that traverse both front and back-end development disciplines. The role operates within a DevOps CI/CD environment delivering new and innovative solutions for the CAA. You will work within … will work with a wide range of CAA colleagues and external suppliers and will be responsible for ensuring the solutions you work on meet development principles and technical standards. The role requires a combination of technical design skills and delivery across the full project life cycle. Strong engagement ...

designing, developing, and maintaining the backend services that manage multiple payment gateways, methods, and related functions. Your expertise in TypeScript/Node.js , backend development, and database integration is crucial for building efficient and secure payment processes. What You'll Be Doing (Key Responsibilities) Backend Development: Play … role in developing robust server-side applications and core payment flows. Take a direct part in the development of the front-end API Development: Design and optimize high-performing APIs. Database Management: Assist in designing and optimizing database schemas (relational and NoSQL). Code Quality: Execute thorough ...

efficient Google Cloud Infra, product and DevOps with cross-disciplinary feature team curating scalable GCP Cloud Products as IaaC and building APIGEE/API and modernizing APIGEE gateway. Key responsibilities: Hands-on development and management of Google Apigee API Management Platform . Design, build, and deploy API … proxies , policies, and configurations in Apigee. Implement CI/CD pipelines for API lifecycle management using tools like Jenkins, GitHub Actions, or Harness. Develop and maintain API security policies (OAuth, JWT, mTLS, rate limiting, threat protection). Automate Apigee deployments and configurations using Infrastructure as Code (IaC) principles. ...

/Feb 2026 Job Type: 12-month (Inside IR35 Contract) Company Introduction: We are currently recruiting for a Python Developer with experience in API development for an exciting contract at our global client in the finance sector. Required Skills/Experience: Hands-on experience with API development … Prometheus, Grafana, and OpenTelemetry. Advantageous to have enterprise tools knowledge (i.e., Control M, True sight, Guardium, Tenable Nessus, Delinea) Knowledge of Security and Software Development in a Highly regulated environment End-to-end knowledge of build, package, test, and deployment of CI/CD pipelines. Experience using Agile practices ...

Duties will include: The design and implementation of best-in-class software architecture Produce and communicate clear technical designs to guide and contextualise solution development across products, services, projects, and systems, including applications, technologies, processes, and information which meet the business strategic needs. Create and maintain the architecture models … retros, sprint reviews, story-mapping, backlog refinement) helping the entire delivery team be the best that they can. Essential Skills: C# .NET Core, REST API Design and Development, API Management Document or No-SQL database solutions (particularly Elasticsearch) Messaging and microservices based architecture (Azure Service Bus, Azure ...

experience of different types of architectures and understanding of the tradeoffs between them. In this role, you'll be a senior contributor to the development and operation of our cutting-edge cloud-based platform. You should have a passion for both science and engineering, a proven ability to deliver … contribute to our mission! Responsibilities : As a Safe Intelligence Full Stack Software Engineer, you will: Engineering of Golang-based backend systems , focusing on API development and integration. Engineering on our TypeScript-based frontend systems , primarily utilizing React to craft intuitive and highly functional user interfaces. Productize and enhance ...

role in developing a scalable, secure, and maintainable platform that integrates ecommerce, CRM, licensing, and other business-critical systems. This is a hands-on development role for a developer who thrives on complex, integrated systems, enjoys problem solving across the full stack, and wants to contribute to a mission … full-stack technologies. Develop new features and functionality for both front-end and back-end components in following best practices. Implement and maintain robust API integrations with internal and third-party systems. Assist in monitoring, troubleshooting, and resolving production issues to maintain system reliability and data integrity. Participate ...

month from office) £55,000 – £62,000 DOE Join a team at the centre of a major digital transformation, where modern engineering, secure software development, and large-scale technical innovation drive everything forward. This role places you at the forefront of designing and delivering complex, high-impact digital solutions … with wider digital ambitions. Skills Strong expertise in HTML, CSS, JavaScript Advanced commercial experience with React Confidence designing scalable front-end architecture Experience with API integration, cloud platforms, and CI/CD workflows Writing unit tests Modern front end testing frameworks like Jest Ability to mentor colleagues and collaborate ...

week from office) £55,000 – £62,000 DOE Join a team at the centre of a major digital transformation, where modern engineering, secure software development, and large-scale technical innovation drive everything forward. This role places you at the forefront of designing and delivering complex, high-impact digital solutions … with wider digital ambitions. Skills Strong expertise in HTML, CSS, JavaScript Advanced commercial experience with React Confidence designing scalable front-end architecture Experience with API integration, cloud platforms, and CI/CD workflows Writing unit tests Modern front end testing frameworks like Jest Ability to mentor colleagues and collaborate ...

strong Database knowledge, preferably SQL Server and/or MySQL, with proven skills in Node.js frameworks such as React, Next.js & Nest.js and 3rd Party API Integrations & API Development experience with the latest technologies? Then we have an exciting opportunity with a blue chip client in Hatfield, Herts … They are looking for a Development Engineer to join their DevOps team, you will play a pivotal role and in their development team. The role will initially be 5 days per week in their Hatfield office but then moving to 3 days office based and 2 days remote ...

strong Database knowledge, preferably SQL Server and/or MySQL, with proven skills in Node.js frameworks such as React, Next.js & Nest.js and 3rd Party API Integrations & API Development experience with the latest technologies? Ensure you read the information regarding this opportunity thoroughly before making an application. Then … have an exciting opportunity with a blue chip client in Hatfield, Herts They are looking for a Development Engineer to join their DevOps team, you will play a pivotal role and in their development team. The role will initially be 5 days per week in their Hatfield office ...

Security Engineer £50,000 to 67,000 GBP Bonus Hybrid WORKING Location: Manchester, North West - United Kingdom Type: Permanent Security Engineer - API, IAM & Automation Locations: Glasgow, Greater Manchester or Northampton (Hybrid) Salary: Up to £67,000 base + bonus (DOE) The Role We're looking for a Security Engineer … join a growing security engineering function, helping to design and build secure, scalable systems with a strong focus on API security, automation, and identity. This role suits someone from a Security Engineering, DevSecOps, Platform Engineering or Cloud Engineering background who enjoys working close to code and infrastructure, and embedding ...

high-profile banking client. While this role covers the full stack, we are looking for a candidate with a strong emphasis on Front End development to contribute to a large-scale development project. Key Responsibilities End-to-End Development: Design, develop, test, deploy, and maintain web applications … database. Front End Focus: Create sophisticated user interfaces and layouts using HTML, CSS, JavaScript, and modern frameworks (React or Angular). Back End Development: Develop server-side logic, RESTful APIs, and microservices using Java, Spring Boot, and related technologies. Database Management: Design and work with SQL (MySQL, PostgreSQL ...

offer Work on forward-thinking AI and data-led projects Join a growing, collaborative, and innovative team Opportunities for continuous learning and career development Competitive salary and comprehensive benefits Hybrid working - their offices are based in city centre Glasgow. They are ideally looking for some office presence … right candidate. If you are based in Edinburgh, Dundee, Stirling, Aberdeen, Newcastle, Cumbria or further afield, please do reach out. Key Responsibilities AI & Software Development Develop and maintain AI-powered software using .NET, C#, Python , and Azure-based services Deliver scalable, high-performing solutions suitable for enterprise adoption ...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software … whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development that generates real business value. About the role We’re looking for a Full Stack ...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software … whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development that generates real business value. About the role We’re looking for a Full Stack ...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software … whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development that generates real business value. About the role We’re looking for a Full Stack ...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software … whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development that generates real business value. About the role We’re looking for a Full Stack ...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software … whether that’s new applications, enhancements to existing systems, or bespoke API integrations. Our team works with a wide range of organisations from small businesses to large enterprises, and values pragmatic, maintainable development that generates real business value. About the role We’re looking for a Full Stack ...

process flow diagrams, conducting time-motion studies, identifying bottlenecks and inefficiencies, and redesigning processes to be machine-readable and automation-ready using methodologies. Python Development - Strong proficiency in Python programming including object-oriented design, asynchronous programming, error handling, and writing clean, maintainable code. Experience with key libraries including Pandas … business process applications, configuring workflows, implementing business rules, managing records, and integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework for exposing AI models and automation services. ...

hygiene in their operations.In this varied role, you will be the primary architect for Acumatica customisations and integrations. You will work across the full development lifecycle, from designing custom workflows and screens to building robust API connections with CRM, WMS, and e-commerce platforms, ensuring the entire business … ideal candidate will possess expert-level proficiency in C# and the .NET Framework/Core, complemented by a solid grasp of ASP.NET and web development to manage Acumatica's web-based UI. A deep understanding of SQL Server and T-SQL is essential for database design ...

seeking a talented and experienced Full Stack Developer to join our dynamic team. The ideal candidate should have expertise in front-end development using React and Next.js, as well as proficiency in back-end development with Spring Boot, GraphQL, and Velocity scripts. Additionally, hands-on experience with … using Jenkins is crucial for success in this role. Mandatory Skills: React and Next.js, Spring Boot, GraphQL, and Velocity scripts Key Responsibilities: Front-End Development: Develop and maintain responsive and user-friendly web applications using React and Next.js. Collaborate with UI/UX designers to implement design specifications ...

Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API development and modern system architectures At least 3 years’ experience in a leadership role Strong problem-solving skills and ability to perform under ...

architectural discussions and provide technical input Support the team in troubleshooting and resolving production issues What We're Looking For Essential: Solid Java development experience (5+ years) Proven experience building Spring Boot microservices Proficiency with Spring Data JPA, SQL, and database design Strong experience with RESTful API development … DevOps practices Excellent problem-solving skills and attention to detail Strong communication and collaboration abilities Nice to Have: Experience working with AI-powered development tools (e.g. Claude Code, GitHub Copilot) Experience with Kafka and event-driven architectures Knowledge of both SQL and NoSQL databases for different use cases Experience ...