1 to 25 of 76 API Development Jobs in the UK excluding London

contribute to code reviews, mentor other engineers and work closely with stakeholders to deliver scalable, production ready solutions. Experience required: – 5+ years commercial .NET development experience – Strong ASP.NET Core experience including API development – Experience building Android focused apps using .NET MAUI or Xamarin – Solid knowledge of Entity … based collaborative environments – Exposure to automated testing practices Keywords C# .NET ASP.NET Core MAUI Xamarin Entity Framework SQL Server Azure SQL Android API Development ...

/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 ...

Senior Software Engineer (C#, SQL, API Development | Training Provided in X++ & Dynamics 365) Hybrid 4 Days Onsite Initially, Then 3 Days Onsite/2 Remote After Probation Were supporting a major digital transformation programme for a leading UK retailer, and were looking for a Senior Software Engineer … engineers , encouraging creativity, and fostering proper engineering culture. Core Skills Required (Must-Have) To be considered, you need a proven track record in: C# development in modern engineering environments SQL (T-SQL, Stored Procedures, relational database experience) API development & integration Agile delivery (Scrum/Kanban) Strong problem ...

hybrid role that will be based in London. Our client is seeking a hands-on AI Chatbot Technical Lead to drive the development and enhancement of their Service Management Chatbot. This is a key role for someone with deep technical expertise in Python, LangChain, and OpenAI services, particularly within … Azure environments. You will lead the technical delivery of the client’s Chat API, ensuring it is robust, scalable, and continuously improving. Responsibilities Lead the development and enhancement of the Chat API using Python, LangChain, and OpenAI services on Azure Function Apps Monitor and resolve API ...

Portal & API Developer/Software Developer This opportunity is brand new, due to business growth and with a globally recognised leader in their sector. Based in Leyland this role will see you develop your career within quite a unique sector. Role Competencies Excellent debugging and analytical problem-solving skills … Ability to understand complex, multi-service interaction flows Secure coding mindset and API-first approach Strong team collaboration and clear technical communication Ability to write professional, structured technical documentation Required Technical Skills: C# (Strong proficiency) ASP.NET MVC or .NET Core Web API MVC concepts: Routing, Controllers, Filters, Middleware ...

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 ...

City Centre Location: Leeds City Centre (Hybrid: 3+ days onsite) Salary: £45,000–£55,000 Job Type: Permanent | Full-Time Tech Stack: Symfony, PHP, API Platform, React, Next.js, MySQL, Docker Are you a Symfony Developer or PHP Backend Developer looking for your next career move? Do you want … skilled engineering team building scalable digital solutions? This growing tech-driven organisation is looking for a Mid-Level Symfony Developer to join their expanding development team. You’ll be working on high-performing, API-led applications and modern frontend features within a collaborative, supportive environment. About the Role ...

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 ...

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 ...

will use your knowledge of systems architecture and design to guide your team to develop sustainable, scalable solutions. You will also coordinate the development of new interfaces and tools alongside the maintenance of existing tools and codebases including migration of these to new technologies and infrastructure. Your knowledge … databases, developing websites and working with big data (gigabyte to terabyte scale) In-depth knowledge of the following: software engineering, relational databases, service provision, API development, standards, software development best practices Project management and staff management experience Experience contributing to budget management and managing grants, including grant ...

seeking an experienced Full Stack Developer to join our team on a short-term contract. This role involves both front-end and back-end development, requiring strong skills in Java, Python, and API development. You will be instrumental in building and maintaining scalable, high-quality applications that deliver … mobile responsive design. Required Skills & Qualifications: Proven experience as a Full Stack Developer. Strong proficiency in Java and Python. Hands-on experience with API development and integration. Solid understanding of HTML, CSS, JavaScript, and modern front-end frameworks (e.g., React, Angular, or Vue). Experience with databases ...

Access to a dedicated wellbeing hub and staff support networks Flexible working arrangements to suit your lifestyle Generous annual leave and pension scheme Professional development through extensive training programmes Salary sacrifice schemes for childcare, electronics, and savings Opportunities to work on innovative projects that impact real lives The Role … Senior Front-End Developer, you’ll lead the design and development of secure, scalable web applications using modern Typescript/JavaScript frameworks. You’ll work in an agile, cross-functional team, contributing to strategic digital initiatives and mentoring junior developers. Key Responsibilities: Develop and maintain high-quality front ...

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 ecosystem … 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 ...

flexibility and collaboration, with 1-2 days a week spent onsite. As a Senior Software Engineer, youll play a key role in the design, development, and delivery of scalable, high-performance software solutions. Youll work across the full stack, focusing on Node.js and React, while collaborating closely with other … Experience 5+ years commercial experience with TypeScript/React and Node.js. Proficiency in JavaScript libraries such as React or Next.js. Expert knowledge of REST API development using Node.js. Experience working with C# in enterprise environments. Familiarity with cloud computing, infrastructure as code, and CI/CD pipelines. Experience ...

Avoid repetition) Formal training or certification on software engineering concepts and advanced applied experience Advanced in Python & PySpark or Scala Experience in API development and exposure to Python Application development Hands-on practical experience delivering system design, application development, testing, and operational stability Proficient … aspects of the Software Development Life Cycle Advanced understanding of agile methodologies such as CI/CD, Applicant Resiliency, and Security Practical cloud native experience and knowledge on Kubernetes Your Profile Key Skills/Knowledge/Experience (Up to 10, Avoid repetition) Familiar with any Cloud environment and knowledge ...

standards. Implement business logic, data access layers, and integrations with internal and external systems. Develop and enhance RESTful APIs, following defined contracts and API standards. Write clean, maintainable, well-tested code, adhering to agreed engineering best practices. Contribute unit and integration tests to ensure functional correctness and regression safety. … assigned work. Follow established security, performance, and reliability guidelines when implementing backend changes. Skills & Experience Core backend engineering 3-6+ years of backend development experience. Strong experience with Python or equivalent backend frameworks. Solid understanding of REST API development, request/response models, and error handling. ...

require a Full-Stack (Web) Developer to join their team and help enhance the company’s core digital infrastructure. 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 … critical platform. You will demonstrate strong full-stack development experience with Laravel/PHP for API development and front-end frameworks such as Vue.js (or similar), a familiarity with Node.js and experience with CMS platforms and content/data migrations. In addition, you will have proven experience ...

processes. Responsible for documenting all solutions, produced to agreed team standards. Demonstrate a willingness to learn and further technologies & techniques embraced by the development team. Cultivate strong working relationships both within working squad and in HL as a whole. Actively participating in working groups and communities of practice designed … support the development team. Continually develop both technical and interpersonal skills. Providing engineering support for existing applications when necessary. About You Professional experience with AWS, full stack TypeScript with React on the front end, IaC, CI/CD Experience with unit, integration, and end to end testing tools ...

processes. Responsible for documenting all solutions, produced to agreed team standards. Demonstrate a willingness to learn and further technologies & techniques embraced by the development team. Cultivate strong working relationships both within working squad and in HL as a whole. Actively participating in working groups and communities of practice designed … support the development team. Continually develop both technical and interpersonal skills. Providing engineering support for existing applications when necessary. About You Professional experience with AWS, full stack TypeScript with React on the front end, IaC, CI/CD Experience with unit, integration, and end to end testing tools ...