251 to 275 of 1,104 API Development Jobs in the UK

the backend engineering efforts of our enterprise platforms. This role requires strong architectural acumen, hands-on coding capability, and a leadership mindset to guide teams across the full software development lifecycle. Exposure to mobile application ecosystems, collaboration across cross-functional teams, and experience in the banking or financial services domain will be strong assets. You’ll work closely with … stakeholders to deliver scalable, secure, and maintainable solutions. Key Responsibilities: • Design and develop scalable, secure, and high-performance backend systems using Java, Spring Boot, and modern architectural practices. • Lead development of RESTful APIs and microservices along with mobile platforms, ensuring consistency and alignment with business and UX goals. • Drive integration with API Gateway technologies (e.g., Kong, Apigee, AWS … API Gateway) to enforce access control, rate limiting, and API lifecycle management. • Implement robust authentication and authorization workflows using IDAM platforms such as Ping Identity, Okta, or Auth0, with support for OAuth2, OIDC, and JWT. • Collaborate with mobile app teams to ensure backend services are optimized for mobile-specific use cases such as performance, caching, and offline access. More ❯

the backend engineering efforts of our enterprise platforms. This role requires strong architectural acumen, hands-on coding capability, and a leadership mindset to guide teams across the full software development lifecycle. Exposure to mobile application ecosystems, collaboration across cross-functional teams, and experience in the banking or financial services domain will be strong assets. You’ll work closely with … stakeholders to deliver scalable, secure, and maintainable solutions. Key Responsibilities: • Design and develop scalable, secure, and high-performance backend systems using Java, Spring Boot, and modern architectural practices. • Lead development of RESTful APIs and microservices along with mobile platforms, ensuring consistency and alignment with business and UX goals. • Drive integration with API Gateway technologies (e.g., Kong, Apigee, AWS … API Gateway) to enforce access control, rate limiting, and API lifecycle management. • Implement robust authentication and authorization workflows using IDAM platforms such as Ping Identity, Okta, or Auth0, with support for OAuth2, OIDC, and JWT. • Collaborate with mobile app teams to ensure backend services are optimized for mobile-specific use cases such as performance, caching, and offline access. More ❯

a crucial role in designing, developing, and deploying integration solutions that connect multiple enterprise systems, applications, and data sources. This is an exciting opportunity to work on cutting-edge API-led connectivity, enhancing agility and scalability. CGI was recognised in the Sunday Times Best Places to Work list and has been named one of the World’s Best Employers … responsibilities: • Design, develop, and implement MuleSoft APIs and integrations to support digital transformation initiatives. • Collaborate with business and technology teams to understand integration requirements and deliver scalable solutions. • Develop API-led connectivity solutions using MuleSoft Anypoint Platform. • Create and maintain RAML and OpenAPI specifications for RESTful APIs. • Ensure best practices in API security, governance, and performance optimization. • Perform … unit testing and integration testing to validate API functionality and reliability. • Troubleshoot and resolve technical issues in integration services. • Work with CI/CD pipelines and DevOps practices to automate API deployments. • Provide technical expertise and guidance to junior developers and stakeholders. • Stay updated on MuleSoft product updates, API management trends, and industry best practices. Required qualifications More ❯

day in the office (subject to change) Education: Ideally degree educated but commercial experience is first and foremost Qualifications: Any Experience Requirements: Extensive experience ideally working with Web API’s and Microservices Industry: Industrial Responsibilities: To manage a small IT Team of 4 people plus the IT and business systems of a large manufacturing group The role: The Full … Developers within the team to deliver changes required by the business on the Digital Commerce solution. Duties will include both front end (Angular, Typescript, HTML, CSS) and back end development (C#, .NET, Azure). Responsibilities will also include estimating user stories, developing new features for the Digital Commerce solution, fixing bugs, testing, peer reviewing code and following security best … Developing and enhancing bespoke Digital Commerce solution Ensure adherence to quality assurance and documentation standards and promote continuous improvement Key Tasks: Work as part of a cross-functional Agile development team consisting of software developers, testers, architects and product owners to deliver robust and well-engineered software solutions Delivery of the roadmap for Digital Commerce solution, proposing and implementing More ❯

deep understanding of REST APIs, microservices, and event-driven architectures. You will be expected to provide architectural guidance, collaborate with cross-functional teams, and contribute hands-on to the development process. Key Responsibilities: Architect, design, and develop scalable, secure applications using .NET Core 6+ and Azure. Design and implement RESTful APIs using industry best practices. Utilize Entity Framework or … functional teams to define and implement technical solutions. Stay current on Azure and .NET Core advancements, incorporating new best practices into solutions. Required Skills & Experience: 10+ years of software development experience, with 3+ years in an architectural role. Proficiency in .NET Core 6+ and C#. Strong expertise in REST API development and microservices architecture. Experience with Entity … Xunit or Nunit). Familiarity with CI/CD pipelines and DevOps practices. Nice to Have: Experience with Kubernetes, Docker, and containerized applications. Knowledge of GraphQL, gRPC, or modern API technologies. Experience with NoSQL databases like Cosmos DB or MongoDB. Familiarity with message brokers such as Kafka or RabbitMQ. If you are a seasoned architect with a passion for More ❯

will be joining a friendly, dynamic and supportive team who encourage collaboration, fostering a culture of innovation. In this position you will play a key role in the design, development and testing of software applications and tools for both internal and external stakeholders. You will be assisting the Engineering Team and Product Owners in turning project requirements into technical … tasks for the Development Team, producing sensible estimates for the tasks. As a Senior Software Engineer, you will keep abreast of new developments across the business, and you will work with the team to implement best practice. You will promote better working practices and the adoption of tools that improve the efficiency and quality of development within the … driving product design Break down Epics into individual Stories that can be assigned to other team members About You You will be technically competent and highly experienced in software development and trouble shooting. You will be able to communicate effectively, to explain technical concepts to a range of audiences including non-technical employees. You Will Also Have Strong hands More ❯

Full Stack Developer to join a SaaS company that are building a cutting-edge relationship management platform tailored specifically for recruitment agencies. This role requires deep expertise in backend development using .NET Core (ideally version 8 or higher) and C#, as well as proficiency in modern frontend technologies. Key Responsibilities Design, develop, and maintain web applications using .NET Core … product owners, and QA engineers Deploy, monitor, and support applications using Microsoft Azure services Required Skills & Experience Strong commercial experience with .NET Core (v8) , C# , and ASP.NET Expertise in API development and integration Solid knowledge of Entity Framework and relational database design using SQL Competency in frontend development with HTML , CSS , and JavaScript Strong understanding of cloud More ❯

our Head of Customer Support to build next-generation systems that enable our team to deliver world-class support efficiently and effectively. What Makes This Role Special High-Impact Development : Every system you build directly affects customer satisfaction and business growth. Your technical solutions will be measured by real business outcomes. Cutting-Edge AI Integration : Work at the forefront … engineering challenge of doing more with less. Full Ownership : Take end-to-end ownership of internal platforms, from conception through deployment and ongoing optimization. Core Responsibilities Technical Integration & Platform Development Design and implement robust API integrations between Intercom, internal systems, and third-party platforms Build and maintain our internal web-based admin tools and dashboards Develop scalable, maintainable … streamline complex workflows Research, prototype, and implement emerging technologies that enhance customer experience Develop intelligent routing and escalation systems Create A/B testing frameworks for automation initiatives Backend Development & Analytics Build backend systems that capture and process customer interaction data Develop dashboards and reporting tools that measure system performance and effectiveness Create analytics features that help identify patterns More ❯

You'll help design and implement robust, secure systems, write clean and testable code, and support key architectural decisions. You'll also collaborate with cross-functional teams, contribute to API development, and mentor junior developers. There's potential to lead a small team and take ownership of a stream of work depending on your experience and goals. Key … using Java, TypeScript, and React-so flexibility and a passion for learning are key. Benefits: Salary up to £70k depending on experience 25 days' holiday + bank holidays Personal development budget Collaborative, supportive engineering culture Modern stack with evolving tech roadmap Opportunity to lead a small development team What Happens Next? Please either apply online or email me … only. We look forward to hearing from you! Key Skills: PHP, Symfony, MySQL, REST APIs, Microservices, JavaScript, React, Java, AWS, Docker, CI/CD, Git, Secure Coding, Test-Driven Development, Distributed Systems, Infrastructure as Code (CDK/Terraform), Linux/Bash More ❯

SQL Server 2017+ (On-Prem and Azure) Familiarity with Entity Framework (EF Core 6) Experience building robust, maintainable, and secure Microservices within a Service-Based Architecture Proficiency in RESTful API development and WebAPI (JSON) Excellent communication skills to effectively liaise with technical and non-technical stakeholders What you'll get in return: Excellent career development opportunities Company … bonus Training, development, and professional coaching Alongside a competitive salary of £80,000 - £90,000, the role offers a flexible hybrid working pattern, requiring 3 days onsite at their modern Central London headquarters. Please note, the client cannot provide sponsorship; only UK residents should apply. To be considered for an immediate telephone interview, apply now or contact Ciara Holmes More ❯

Software Engineer Contract 12 months initially 2/3 days a week onsite in Wilmslow IR35 Status - TBC Rate - TBC The team you'll join are currently completing the development of the suite of micro-services (e.g. Tenancy Admin, Notifications) written in C# and built on the AWS architecture that will comprise our first Cloud Platform, due live later … Extensive knowledge and proven experience as a software developer, with exposure to elements of our back-end technology stack (C#, .Net) Good experience working with Amazon Web Services, Microservices, API development Knowledge and application of software engineering practices (e.g. Unit testing, TDD, CI/CD, SOLID, BDD etc.) and experience working as part of an agile delivery team. … Continuous delivery, with pipelines implemented in Kubernetes, Docker Front-End JavaScript Frameworks, especially Angular is advantageous Experience implementing and maintaining Datadog Experience using GitHub and GitHub Actions Behaviour Driven Development (BDD), with Gherkin & SpecFlow Atlassian Jira, Confluence & JFrog Artifactory Ideally some software security best practices and implementation (e.g. OWASP, PKI, X509 Certificates, TLS) Software development for regulated environments More ❯

We are seeking a talented Software Engineer to join our dynamic development team. The ideal candidate will possess strong expertise in Core Java 8 , Spring Boot , and Spring Web , along with experience in API development and deployment . You will be responsible for building and maintaining scalable, high-performance applications while leveraging modern CI/CD pipelines. More ❯

new asset management system—and they’re looking to bring experienced Back-End or Full Stack Developers on board to drive this transformation. As a key part of the development team, you’ll be involved in architecting and delivering robust, scalable backend solutions using PHP (Laravel), MySQL, and modern frontend technologies. You’ll be joining a collaborative and agile … environment where autonomy and technical input are both valued and encouraged. What you’ll be working with: PHP (Laravel) and MVC frameworks MySQL Backend API development (REST) HTML, CSS, JavaScript, Bootstrap Vue.js or similar JavaScript frameworks Azure DevOps, CI/CD pipelines Linux-based environments What we’re looking for: 6+ years’ experience in a full stack or … React, Node.js, Angular, or additional modern JS frameworks This is an exciting opportunity to work on a greenfield project with long-term impact, using a modern stack and best development practices. On offer is a salary of £70,000 plus excellent benefits, flexible working, and the chance to be part of something genuinely rewarding. Interested? Apply now or get More ❯

new asset management system—and they’re looking to bring experienced Back-End or Full Stack Developers on board to drive this transformation. As a key part of the development team, you’ll be involved in architecting and delivering robust, scalable backend solutions using PHP (Laravel), MySQL, and modern frontend technologies. You’ll be joining a collaborative and agile … environment where autonomy and technical input are both valued and encouraged. What you’ll be working with: PHP (Laravel) and MVC frameworks MySQL Backend API development (REST) HTML, CSS, JavaScript, Bootstrap Vue.js or similar JavaScript frameworks Azure DevOps, CI/CD pipelines Linux-based environments What we’re looking for: 6+ years’ experience in a full stack or … React, Node.js, Angular, or additional modern JS frameworks This is an exciting opportunity to work on a greenfield project with long-term impact, using a modern stack and best development practices. On offer is a salary of £70,000 plus excellent benefits, flexible working, and the chance to be part of something genuinely rewarding. Interested? Apply now or get More ❯

collaborative environment, this could be the perfect opportunity for you. About the Role: As a Full Stack Engineer, you'll be an integral part of a cross-functional feature development squad, responsible for delivering innovative new features on our flagship platform. You'll apply your polyglot skill-set to contribute across all aspects of the development lifecycle – from … architectural analysis and design, data engineering, and back-end service development, to web-based UI development. You'll collaborate closely with other engineers, product owners, scrum masters, and business stakeholders to ensure a continuous delivery of value. What You'll Do: Collaborate with your development squad to define, elaborate, and refine requirements for new features. Contribute towards sprint … as a full stack engineer. Experience in common web technologies such as React, TypeScript, and JavaScript. Experience developing microservices as part of a full-stack application architecture. Proficiency in API design and development (REST, Swagger, HATEOAS, gRPC). Working knowledge of Microsoft Azure and application workload management. Proficiency in object-oriented development techniques. Understanding of modern data More ❯

Stack Developer Location: London, United Kingdom – 100% Remote Engagement Type: B2B Contract Duration: 6 Months (with possible extensions) We are seeking a skilled Full Stack Developer to lead the development of a data analytics application for a long-term project requiring strong technical capabilities, cloud proficiency, and collaborative development experience. Key Responsibilities Lead full stack development for … interactive dashboards using Power BI. Required Skills & Experience Cloud Certification: AWS, Azure, or Google Cloud (with hands-on experience in developing cloud applications). Technical Skills: SQL & Database Management API Development (RESTful) Version Control (Git) Testing Frameworks Platform Experience: Power Apps Power Automate SharePoint Online Strong foundation in UX/UI principles Soft Skills Strong analytical and problem More ❯

automation capabilities that reduce overheads across delivery, product and operations teams Develop robust integrations, custom APIs, and maintain business-critical automated processes Provide strategic guidance, frameworks, and standards for development and automation solutions Stay abreast of emerging technologies and tools, introducing innovations that enhance operational performance Collaborate with stakeholders across all levels, translating technical concepts into business-friendly language … control and CI/CD tools (Git, Azure DevOps, GitHub/GitLab) Skilled in multiple programming languages, ideally including: .Net (C#) PowerShell T-SQL Deep understanding of the software development lifecycle and Agile methodologies Proven experience in DevOps/SRE practices, CI/CD pipelines and Infrastructure as Code (Terraform, Bicep, ARM) Solid understanding of API development More ❯

contribute to the evolution of our core B2B ordering platform and play a key role in the transition to a next-generation digital ordering experience. Reporting to the Software Development Manager, you will help us improve our front-end applications to drive productivity and efficiency within our business, and most importantly, delight our customers. As a highly motivated developer … the digital products team, you will be the front-end expert, vital to sprint velocity, stand-ups, estimations, and retrospectives. You will be critical to all stages of software development, from architecture design and performance evaluation to build and deployment pipeline creation, and application monitoring. Our core stack includes: Backend: C#/.Net/SQL Server/RESTful APIs … Tools: LaunchDarkly, Grafana, GitHub Advanced Security, GitHub Copilot, Pluralsight CI/CD: Azure DevOps, GitHub Actions Infrastructure: Azure, App Service, Cloudflare Frontend: Angular, React, Flutter We use modern software development practices including CI/CD and feature flagging, and are always looking to improve delivery through automation and collaboration. Who we are: apetito is the UK's leading food More ❯

automation capabilities that reduce overheads across delivery, product and operations teams Develop robust integrations, custom APIs, and maintain business-critical automated processes Provide strategic guidance, frameworks, and standards for development and automation solutions Stay abreast of emerging technologies and tools, introducing innovations that enhance operational performance Collaborate with stakeholders across all levels, translating technical concepts into business-friendly language … control and CI/CD tools (Git, Azure DevOps, GitHub/GitLab) Skilled in multiple programming languages, ideally including: .Net (C#) PowerShell T-SQL Deep understanding of the software development lifecycle and Agile methodologies Proven experience in DevOps/SRE practices, CI/CD pipelines and Infrastructure as Code (Terraform, Bicep, ARM) Solid understanding of API development More ❯

should demonstrate energy, passion, and a “can-do” attitude, along with excellent engagement and communication skills. Key Responsibilities Develop and maintain web applications with a focus on back-end development best practices. Collaborate with front-end developers to integrate UI components with APIs and databases. Gather and refine specifications and requirements based on technical needs or UX design. Debug … Node.js. Experience with frameworks such as Django, Spring Boot, or Express.js. Familiarity with database systems, including relational databases (e.g., MySQL, PostgreSQL) and NoSQL databases (e.g., MongoDB). Understanding of API design and development, including RESTful principles. Knowledge of version control systems (e.g., Git). Familiarity with cloud platforms such as AWS, Azure, or Google Cloud. Familiarity with containerization … technologies like Docker. Working knowledge of SEO principles. Familiarity with Agile development methodologies. Expertise and experience in implementing AI tools. Nice to Have Proficiency in Polish language for effective communication. Previous experience in mentoring. Benefits Flexible Working Hours: Value-driven, not 9-5. Remote Work: Work from anywhere with flexible hours. Competitive Salary: Adjusted based on your region. More ❯

seeking a Senior Java Developer/Lead who could drive technology transformation in the team. This role involves taking ownership of key projects and components throughout the entire Software Development Life Cycle (SDLC). A primary focus will be on design, development & maintenance of components under Price Master Central systems which would require expertise in Java, Spring, SQL … API development, Kafka, Kubernetes, and Cloud technologies. You will guide & mentor team of engineers, providing technical expertise and direction, and ensure adherence to best practices. A strong understanding of system and enterprise architecture is essential. You will collaborate with global and diverse teams, including Business Analysts, Project Management, Production Support, and Infrastructure. Price Master Central is a global … management application - responsible for sourcing Securities & Pricing data from market vendors and internal Citi sources and providing it to downstream clients after applying client specific rules. Responsibilities : Deliver assigned development projects within agreed schedule, quality and scope expectations Participate in all stages of the SDLC within an agile Scrum environment Form partnership with technology vendors and gain deep understanding More ❯

contribute to the evolution of our core B2B ordering platform and play a key role in the transition to a next-generation digital ordering experience. Reporting to the Software Development Manager you will help us improve our front-end applications to help drive productivity and efficiency within our business, and most importantly delight our customers. As a highly motivated … on Azure. You will be responsible for contributing to sprint velocity, stand up, estimations, and retrospectives. At a wider level, you will be involved in all stages of software development from architecture design, performance evaluation, to build and deployment pipeline creation, and application monitoring. About Our Stack To give you a flavour of some of the things you can … expect to work with, our core stack is outlined below. However, we are constantly learning and, where appropriate, incorporating the latest technologies in our projects. We use modern software development practices including CI/CD and feature flagging, and are always looking to improve delivery of our software through automation, and collaboration with other areas of IT. Backend: C# More ❯

Studio product, an advanced Digital Asset Management and photo automation solution, and have the opportunity to work on both frontend and backend. You will be involved in the entire development lifecycle, from design and analysis to development and testing of new features. The ideal candidate will be eager to join a fast-paced, dynamic environment where every employee … for an experienced Software Engineer who is now looking to embark on a new challenge with an amazing team of engineers. Ideally you are someone who has: Strong frontend development experience building beautiful UIs using React Backend API development experience in Node.js and be comfortable with modern JavaScript/TypeScript Experience with SQL and NoSQL databases Experience More ❯

with a high level of technical expertise to join our empowered and trusted team. You’ll be working with cutting-edge technologies and driving innovation through deep architectural and development work. Our team values autonomy, flexibility, and a high bar for excellence—so we need someone who is excited about taking on challenges and pushing their technical limits. This … adapt to changing requirements, and contribute to the evolution of our entire tech stack while maintaining a high standard of code quality. What You'll Do: Technical Leadership: Drive development using C#, ASP.NET Core, TypeScript, Vue.js, and other technologies. Own architectural decisions, contribute to product innovation, and ensure the highest levels of code quality through best practices and thorough … wide, high-profile projects that have immediate business impact. Dive deep into emergency-like situations where your technical expertise is crucial for fast decision-making and delivery. Full-Stack Development: Be a key player in building both front-end and back-end systems with expertise in full-stack development, including advanced data visualization tools, AI-enhanced user experiences More ❯

SÜD Group Future in your hands Want to view other available job postings? Bachelor's degree in Computer Science or equivalent experience. C#/.NET: Extensive experience in C# development, including strong understanding of object-oriented principles, asynchronous programming, and .NET framework/Core. Blazor: Proven experience developing web applications using Blazor and related technologies. Telerik Components: Demonstrable experience … using Telerik UI components. Python: Solid understanding of Python and experience developing serverless functions using Azure Functions. REST API Development: Proficiency in designing and implementing RESTful APIs using C# and .NET. Azure DevOps: Hands-on experience with Azure DevOps. Software Development Lifecycle (SDLC): Understanding of agile methodologies. Problem-Solving Skills: Excellent analytical and problem-solving skills. Communication … you could also be entitled to other benefits e.g. a Company Car or Car Allowance, Private Medical Insurance or a Relocation Package. We are dedicated to your growth and development Our training programmes, mentorship, exchange programmes and funding for professional membership subscriptions, courses and certifications aim to support your career advancement. Our global footprint also means: Short-term secondment More ❯