1 to 25 of 128 Permanent API Development Jobs in the UK excluding London

responsible for designing, developing and maintaining software solutions that support the continued evolution of the Lima platform. This role combines full-stack software development with practical experience in AI-assisted software engineering, helping to identify opportunities where AI can improve software quality, developer productivity and innovation. The Software Developer … supports the adoption of AI-assisted development practices across the team, promoting knowledge sharing and encouraging the effective, secure and responsible use of AI technologies throughout the software development lifecycle. Working closely with the Head of Lima Development (technical leadership and delivery), the Product Manager (product strategy ...

Contribute to the design, development, and maintenance of business-critical applications, services, and platforms Support continuous improvement of team practices, processes, and ways of working Collaborate across Technology and the wider business to improve systems, streamline processes, and deliver new capabilities Gather, analyse, and document business requirements and translate … them into user stories and technical solutions Design, develop, test, and maintain code for web, mobile, and desktop applications using Agile development practices Investigate, troubleshoot, and resolve production issues, including critical incidents and service escalations Contribute to architectural discussions and technical decision-making for scalable, secure, and maintainable solutions ...

looking for a Technical Product Manager to join the API team, driving the product direction. This is a highly technical role, the ideal candidate will have worked in a technical role previously moving in to Product or have a passion for development and understand the structure of API … current and future customer needs (including readiness for AI agents and LLM-based consumption). Key to the role will be working with the API Architect and development team to ensure we are building the right thing at the right time. You will work closely with engineering, product ...

days onsite is mandatory) Rate: £400 - £475 Role Summary We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures. This role focuses on building secure, scalable identity and access workflows across … orchestrate identity provisioning and identity lifecycle management. Build policy-based orchestration workflows for adaptive authentication and contextaware access using industry standards (like OPA). API Development Design, build, and secure RESTful APIs and backend services supporting identity, provisioning, and governance workflows. Integrate APIs with our new authentication service ...

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 ...

range of well-known clients. You'll work across backend services, APIs and cloud infrastructure, while also having the opportunity to contribute to frontend development where appropriate. Working within a collaborative product team, you'll be involved throughout the software development lifecycle, helping to deliver secure, high-performing … application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development About ...

Development Manager (Platform) is responsible for leading the day-to-day development and delivery of SHG’s in-house reservation system, Hermes, built primarily in .NET. The role ensures highquality engineering, effective Agile ways of working, and the smooth delivery of enhancements, maintenance and integrations across the platform. … develop a team of software engineers, inherit and strengthen an established team culture, and work closely with the Solution Architect to ensure all development aligns with architectural standards and the wider technology strategy. Key Responsibilities: Manage the planning, delivery and quality of all development work on the Hermes ...

About The Role We are seeking a Senior Embedded Software Engineer to join a multi-discipline EW capability development team at our Gloucester site. This exciting opportunity allows you to work on a variety of Defence, Cyber, and Intelligence programmes, contributing to the design, development, and deployment … cutting‐edge RF systems. If you have hands‐on experience with embedded systems development – especially in the context of software defined radio applications – and are eager to advance your career in a high‐impact, innovative environment, we want to hear from you! At Lockheed Martin, we provide meaningful work ...

maintain full-stack applications – Build robust, scalable applications using Python (FastAPI/Flask), and ReactJS following best practices and design patterns • Contribute to the development lifecycle – Write clean, maintainable code, implement CI/CD pipelines with GitHub Actions, deploy to Kubernetes, and ensure quality through testing and code reviews … environments • Software Engineering Fundamentals – Strong understanding of OOP concepts, design patterns, SOLID principles, algorithms, data structures, and ability to write clean, maintainable code • Backend Development – Proficiency in Python (Pandas, FastAPI, Flask) for building enterprise applications, data processing, and API development • Frontend Development – Experience with ReactJS , Node.js ...

play a key role in the migration from Dynamics CRM 2016 to Dynamics 365. Key Skills Required Microsoft Dynamics 365 CRM C#/.NET Development JavaScript (including Web API) Plugin Development CRM Workflows & Customisations Power Platform (Power Apps & Power Automate) SQL Server & FetchXML Dynamics 365 Integrations … API Development Contract Details £600 per day Outside IR35 3-month rolling contract Remote working Occasional travel to Wales if required Active SC Clearance required This role would suit a senior Dynamics 365 CRM Developer with strong hands-on development experience and a track record of delivering ...

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 ...

About The Role We are seeking a Lead SDR Engineer (Software Defined Radio) to join a multi-discipline EW capability development team at our Gloucester site. You’ll work on a variety of Defence, Cyber, and Intelligence programmes, with the opportunity to specialise in key areas such as SIGINT … software defined radio architectures, payload development, and OpenCPI applications. At Lockheed Martin, we provide meaningful work and continuous learning opportunities that will help develop your skills and progress your career. We believe in supporting a healthy work‐life balance, offering flexible work schedules, hybrid work where possible ...

Full Stack Engineer within large-scale digital transformation programmes. Strong experience delivering projects within the public sector, ideally central government. Significant hands-on Java development experience. Strong knowledge of RESTful API development and microservices architecture. Front-end development expertise using technologies such as: React Angular TypeScript ...

summary The postholder will: The Integration Engineer is a senior technical role within the Trusts Digital Services function, responsible for the hands-on design, development, testing, deployment, and maintenance of clinical and corporate digital solutions. The post holder will work across integration, interoperability, automation, and application development … safe, high-quality, standards-compliant solutions that support patient care, operational efficiency, and workforce productivity. Working under the direction of the Solutions Design and Development Manager and in close collaboration with the wider Digital Services team, the post holder will contribute to the delivery of the Trusts Digital ...

experienced Senior Full Stack Engineers to join a high-performing engineering team building and enhancing modern enterprise applications. This is a hands-on development role for engineers who enjoy working across the full technology stack, delivering scalable web applications, cloud-native services, and modern user experiences. The successful candidate … will have strong Java and Front End development experience, a passion for software engineering best practices, and experience working within Agile delivery teams. Key Responsibilities Design, develop and maintain scalable enterprise applications. Build modern Front-End applications using React (preferred) or Angular. Develop secure and performant backend services using ...

critical systems Contribute to modernization of mainframe-based systems toward scalable, cloud-aligned architectures Maintain and enhance COBOL/DB2-based applications Advance distributed, API-driven, and event-based solutions Lead and mentor engineering teams and ensure adherence to team standards Ensure accurate, high-quality documentation and engineering deliverables … process strategies and standards Lead data assets within an Agile team according to enterprise standards and policies Spend approximately 50% of time on database development and testing and the remainder collaborating with partners on product/platform releases Collaborate with business, product, architecture, engineering, and delivery teams Prioritize sprint ...

systems Coach and guide a small team of MLOps Engineers, Analytics Engineers and AI Engineers Collaborate with Data Science, Pricing, Data Engineering and Software Development teams Evolve Machine Learning and AI Engineering standards and frameworks Enhance data pipelines and engineering infrastructure for scaled ML and AI solutions Support data … acquisition, transformation, model discovery and development Ensure model auditability, versioning and data security Design and implement cloud AI Ops using Azure Optimise deployment of ML and AI model scoring code in production services Use CI/CD pipelines and manage deployment and versioning of data science and AI models ...

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 ...

home and support people to live healthier, more independent lives. We’re a supportive and inclusive organisation that values its people. We offer development opportunities, flexible working, and a strong focus on wellbeing. As a Disability Confident and equal opportunities employer, we welcome applicants from all backgrounds and experiences. … postholder will: The Integration Engineer is a senior technical role within the Trust’s Digital Services function, responsible for the hands-on design, development, testing, deployment, and maintenance of clinical and corporate digital solutions. The post holder will work across integration, interoperability, automation, and application development to deliver ...

Monday – FridayInterview Process: 3-stage processWhy SCC An inclusive workplaceExcellent package: solid basic and company benefitsHybrid working & core hours in line with role requirementsCareer development and life-long learning opportunitiesOpportunity to join Europe's largest privately-owned IT CompanyRole purpose: We are looking for an AI Engineer to design … existing business process or platform. What stays consistent across all of it is the approach: working with best-in-class foundation models via API, integrating cleanly with enterprise data and systems, and building things that work reliably in production — not just in a demo. You will work closely with ...

/SQL Server/REST APIs THE ROLE A growing, product-led software business is looking for a Software Engineer to join its Product Development team on a hybrid basis (two days a week on-site in Newark). This is a genuine blend of hands-on development … BENEFITS Salary of £35,000 - £40,000 Hybrid working - only two days a week on-site in Newark Full-lifecycle exposure across support, development and deployment Modern stack and up-to-date tooling, including AI-assisted development platforms International, product-led business with real scope to learn ...

supporting the team's transition from Power BI to Databricks and building out a broader data and application capability. The role combines full-stack development, data visualisation and API development, with experience across Databricks, Python, web development and APIs being particularly relevant. You'll be involved … designing and developing the technical infrastructure and API layers that sit behind applications, as well as proof-of-concept and early-stage solutions. A key part of the role will be technical leadership without direct people management - mentoring and upskilling a relatively junior team, helping establish best practices around ...

Join us at Barclays as an API Software Engineer. As an API Software Engineer, you will design, develop, and support secure, scalable API solutions that power Barclays' digital platforms. Working within Agile engineering teams, you'll help deliver innovative technology solutions while ensuring strong risk management, operational … oriented programming principles, design patterns, and software engineering best practices. Spring Boot - Hands-on experience building and maintaining microservices using Spring Boot, including RESTful API development, dependency injection, security implementation, and integration with cloud-native and distributed systems. Kafka - Strong knowledge of event-driven architecture and real-time ...

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 ...