76 to 100 of 137 API Development Jobs in the UK excluding London

smart, scalable software solutions. As part of continued investment in their technology function, they're now looking for an experienced C#/.NET Developer to join a friendly, collaborative development team based in Crewe. The Role You'll play a key role in designing, developing, and maintaining modern applications and APIs used by customers around the world. Working within … ownership of your work while contributing to a wider team effort. You'll ideally have: 2-4 years' commercial experience with C# and .NET Core Strong understanding of Web API development Experience with relational databases and ORM tools (e.g. Entity Framework, Linq2DB) Familiarity with CI/CD pipelines, Agile delivery, and Git Exposure to Docker and cloud environments … scale applications Hybrid working model (3 days in office, 2 remote) Supportive, inclusive, and innovation-focused culture Competitive salary with performance bonus and comprehensive benefits Real opportunities for personal development and progression This is a great opportunity for a C#/.NET Developer looking to join a forward-thinking, growing technology business where you can make a tangible impact More ❯

days in the office) c£60,000 per year Plus excellent company benefits (including Pension, Bonus, Life Insurance, Healthcare, etc.) Skills and Experience: Extensive experience with web application and API development at a senior level Must be able to mentor more junior members of the team in the absence of the Technical Lead Expert understanding of microservice architecture … scalable and performant solutions Design and develop front end code with a focus on security, accessibility and delivering a great user experience Provide input on key technology, architectural and development decisions The Opportunity: My client based in the sustainability sector are currently on the lookout for a Senior Full Stack PHP Developer on a permanent basis. In this role … systems to a high standard of security, scalability and performance. The successful candidate will have demonstrable experience working at a senior level across the full stack within a web development team, with keen attention to detail and strong problem-solving skills. Please note this role will not be fully remote and there is no flexibility on the two days More ❯

Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript … the future of our platform building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. More ❯

Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript … the future of our platform — building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. More ❯

Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript … the future of our platform — building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. More ❯

BPSS to start; active SC required due to timescale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Ruby development (primary focus), Python experience desirable Experience across multiple services, particularly data services Docker, Kubernetes, Git/version control API development and integration Agile working practices and adherence … to technical standards Approach: Pride in producing high-quality, well-documented code Ownership of the full development process Collaborative working with user-centered design (UCD) teams Thrives in small, agile, multi-disciplinary teams Key Responsibilities: Develop Ruby-based applications and data services Build and maintain APIs and open data platforms Ensure code is high-quality and well-documented Work … For: Senior Ruby developer with strong focus on code quality Experience working with data services Comfortable working in small, agile teams and collaborating with UCD teams Desirable Skills: Python development Experience in public sector or government projects Knowledge of search technologies and open data platforms Active SC clearance More ❯

in Northampton in their search for a Full Stack Developer to join the team on a permanent basis. The ideal candidate will have strong experience working in full stack development and Integrations with the ability to design, develop, and implement technical solutions that enhance business processes. Tech Stack: Proven experience in full stack development (frontend and backend). … Proficient in JavaScript, React, Node, HTML, CSS, and SQL . Experience with API development and cloud-based systems (preferably AWS) Excellent analytical and problem-solving skills. Strong communication and collaboration abilities. Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for More ❯

Responsibilities Develop and maintain full stack solutions using Oracle DB Support legacy system migration and ERP integration efforts Build and consume APIs to enhance application functionality Collaborate with offshore development teams to ensure smooth delivery and coordination Contribute to front-end development using technologies like ColdFusion Participate in code reviews, testing, and deployment processes Skills & Experience Required Proven … experience in back-end development with Oracle PL/SQL Exposure to ColdFusion or willingness to learn quickly Experience of front-end technologies and frameworks Experience with API development and integration (RESTful services) Familiarity with legacy systems and migration projects Ability to coordinate and communicate effectively with offshore teams The following benefits: 10% employer pension contribution … Days annual leave, plus public holidays Life assurance 4x annual salary Flexi-time. Paid volunteering leave Excellent continuous professional development - they cover 100% of new, approved qualifications up to a value of 2800 USD per year, and then cover 75% of qualifications up to a value of 5000 USD per year Flexible benefits allowance at 1.5% of your annual More ❯

government in their search for a Cloud Java Developer to work out of either Manchester or Cheltenham. This client, aside from offering a very strong package, offer an excellent development programme, with a real willingness to support both financially and otherwise. Tech wise, we have requirement for both Java and Python backend languages, and cloud experience would also be … or Java, React, Go Familiarity with deploying applications to cloud architecture and technologies in AWS environments. Experience with web application services Experience of Test Driven or Behaviour Driven development. API development and integration Experience with monitoring systems Working knowledge of digital delivery processes and methodologies. Working knowledge of Atlassian Toolset. Knowledge of JavaScript frontend frameworks. Understanding of front More ❯

BPSS to start; active SC required due to timsecale of the project Team: 10 direct reports, part of a 60+ programme Experience: 4+ years Essential Skills Technical: Strong Python development (primary focus), Ruby experience desirable Experience across multiple services, particularly data services Docker, Kubernetes, Git/version control API development and integration Agile working practices and adherence … to technical standards Approach: Pride in writing high-quality, well-documented code Ownership of the full development process Collaborative working with user-centered design (UCD) teams Thrives in small, agile, multi-disciplinary teams Key Responsibilities: Develop Python-based applications and data services Build and maintain APIs and open data platforms Ensure code is of high quality and well-documented More ❯

solution. This role is ideal for a hands-on developer who enjoys solving complex problems and improving legacy systems using modern technology. Key Skills & Experience Strong Node.js and JavaScript development experience Experience working on greenfield or migration projects Good understanding of API development and system integration Exposure to MongoDB (Mongo Atlas desirable) Comfortable working in Linux environments More ❯

hands-on developer) and an infrastructure specialist your ideas wont just be heard, theyll shape the future. Tech-Forward Culture : Embrace AI-assisted coding and testing tools to accelerate development, testing and deployment. A Breadth of Exciting Projects : From AI-powered analytics and Bluetooth tracking to route optimization and custom API development, youll be solving real-world … on, stored procedures, DB design & maintenance) Strong experience with RESTful APIs, JSON and app integrations Git version control (or similar) HTML & CSS PowerBI reporting What You Bring Full software development lifecycle experience, including testing and documentation Strong debugging skills and a commitment to clean, maintainable code Effective communicator, with both technical and non-technical audiences Ability to work independently … Previous technical support experience Salary & Benefits Salary: £4051K basic + annual bonus (currently £4.56K), based on company performance 28 Days Annual Leave Life Assurance & Stakeholder Pension Ongoing technical & personal development training Flexible Working Hours (start from 7am if you wish) They plan to move to a 4-day week, every other week, from next year A Purpose-Driven Culture More ❯

Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript More ❯

Responsibilities Develop and maintain full stack solutions using Oracle DB Support legacy system migration and ERP integration efforts Build and consume APIs to enhance application functionality Collaborate with offshore development teams to ensure smooth delivery and coordination Contribute to front-end development using technologies like ColdFusion Participate in code reviews, testing, and deployment processes Skills & Experience Required Proven … experience in back-end development with Oracle PL/SQL Exposure to ColdFusion or willingness to learn quickly Experience of front-end technologies and frameworks Experience with API development and integration (RESTful services) Familiarity with legacy systems and migration projects Ability to coordinate and communicate effectively with offshore teams The following benefits: 10% employer pension contribution … Days annual leave, plus public holidays Life assurance 4x annual salary Flexi-time. Paid volunteering leave Excellent continuous professional development – they cover 100% of new, approved qualifications up to a value of 2800 USD per year, and then cover 75% of qualifications up to a value of 5000 USD per year Flexible benefits allowance at 1.5% of your annual More ❯

PV, BESS, and SCADA/ModbAbout the Role My client is seeking a talented and innovative Software Engineer to join our growing renewable energy technology team, focused on the development, deployment, and maintenance of advanced software and hardware monitoring systems for our portfolio of large-scale solar PV and Battery Energy Storage System (BESS) projects across Southern Africa and … monitoring solutions. · Knowledge of renewable energy systems (solar PV, BESS, grid interconnection) and related data flows. · Familiarity with database design, real-time data processing, and analytics platforms. · Experience with API development and integration for third-party devices and systems. · Understanding of cybersecurity principles and secure software design. · Ability to work collaboratively with multidisciplinary teams and coordinate with on More ❯

application performance and responsiveness. Collaborate with systems, RF, and data engineering teams to integrate software with underlying satellite and network infrastructures. Contribute to system documentation and participate in Agile development processes. Required experience: Proficiency in Python, including experience with multi-threading, asynchronous programming, and concurrency. Experience with relational databases (preferably SQLite) and database schema design. Knowledge of RESTful API development and service integration. Hands-on experience with Docker for application packaging and deployment. Strong problem-solving skills and ability to translate conceptual designs into working prototypes. Excellent collaboration and communication skills, with a focus on rapid iteration and demonstrable results. Nice to have: Experience with Object-Relational Mapping (ORM) tools (e.g., SQLAlchemy, Django ORM). Exposure to … modern C++ (C++17 or later) for application development or system integration. Familiarity with satellite communications, RF systems, or signal processing concepts. More ❯

TFS/Azure DevOps We are looking for an experienced Software Developer for a growing Software house. You’ll have the opportunity to work in a close-knit, collaborative Development Team, working on some complex projects, where problem solving is of high importance. To be considered for this role you'll need commercial experience in C#/.NET Development Tech Stack: C#/.NET Core UI Development (WPF/XAML/MVVM) Entity Framework API Design & Development OOP SQL Git/TFS Desirable skills include Docker, Kubernetes, CI/CD, Android & Azure DevOps Role Overview: Design & architecture of applications and design/development of user-facing applications Building reusable code libraries Testing, validation and More ❯

experienced Technical Lead (Java) to join a large-scale central government programme , supporting the delivery of high-quality, secure, and scalable digital services. You'll lead technical direction across development teams, ensuring best practice in software engineering, architecture, and delivery. This role requires hands-on Java expertise alongside the ability to mentor engineers and influence technical decisions across multiple … workstreams. Key Responsibilities Provide technical leadership and guidance to software engineering teams Define and implement best practices in software design, coding, testing, and deployment Lead the development of secure and scalable Java-based applications Collaborate closely with Product Managers, Architects, and Delivery Leads to ensure technical alignment Contribute to continuous improvement and innovation within a complex, multi-team environment … with experience designing and building enterprise-scale applications Proven experience as a Tech Lead or Senior Engineer in central government or large public sector programmes Solid understanding of microservices , API development , and integration patterns Experience with cloud environments (AWS, Azure, or similar) Knowledge of CI/CD pipelines , containerisation , and infrastructure as code principles Strong communication and stakeholder More ❯

Cloud Security Engineer/Developer (AWS) - Node.js/NestJS and REST API - Authentication (Auth0, Ping Identity) Permanent, up to £88,000 + package ***Hybrid - 3 days office Leading financial services client is seeking a Senior Cloud Security Engineer and help shape their cybersecurity in a fast-paced, global environment. Key Responsibilities: Design and maintain RESTful APIs and microservices using … Embed DevSecOps best practices across IAM, networking and compliance. Collaborate with Agile teams to deliver high-quality, secure software at scale. Key Skills: Strong Node.js/NestJS and REST API development experience. Skilled in AWS Proficient with IaC, CI/CD (CloudFormation, Terraform) Cloud security principles, including IAM, networking, and encryption If this is of interest and you More ❯

and thrive in a collaborative environment. You should have; Strong software engineering background with .NET C# Experience with the cloud (Azure preferably but will consider other providers) Microservices Modern API development Terraform Kubernetes IaaC SQL or Azure SQL or MongoDB Experience with the Cloud, Microservices, highly scaleable and distributed systems with lots of users would be extremely beneficial. More ❯

IT systems, infrastructure, and cybersecurity defences, identifying opportunities for improvement. Design and implement innovative technical solutions that streamline workflows and enhance efficiency across the organisation. Contribute to the ongoing development of the firm’s technology strategy, ensuring alignment with overall business objectives. Evaluate emerging technologies and recommend areas for continuous improvement. Design, build, and maintain API integrations to … integration methods. Advanced understanding of the Microsoft 365 ecosystem and Azure cloud services. Familiarity with legal sector applications (e.g. iManage, 3E, Intapp, Mimecast, Tessian, Litera) is advantageous. Experience with API development, data integration, and automation tools. Proficiency in SQL, JSON, OData, and REST APIs; experience with data warehousing best practices. Working knowledge of Microsoft Power Apps and low More ❯

teams, with responsibility not just for delivery but also for mentoring peers, shaping design decisions, and contributing to long-term planning and technical standards. What you'll need: SPA development experience using JavaScript and TypeScript Proficiency in both Vue.js (v3) and Nuxt.js HTML5, CSS3+, Tailwind, and responsive design implementation CSS pre-processors (SASS, SCSS) and build tools (Vite, Webpack … PrimeUI, Axios, GitHub or equivalent version control Experience with MSAL and single sign-on (SSO) REST-based API development UI/UX, accessibility (WCAG/WAI), and usability standards Wireframing, prototyping, and high-fidelity mock-ups Use of Figma, Sketch or Adobe XD Testing tools such as Cypress, Mocha, Jest, Selenium, Playwright, Docker, Postman Experience in Agile and … and strategically valued team Hybrid structure with two remote days per week Involvement in architectural design, estimation and mentoring responsibilities Scope to evaluate new technologies and directly shape future development approaches Get in touch to find out more. More ❯

teams, with responsibility not just for delivery but also for mentoring peers, shaping design decisions, and contributing to long-term planning and technical standards. What you'll need: SPA development experience using JavaScript and TypeScript Proficiency in both Vue.js (v3) and Nuxt.js HTML5, CSS3+, Tailwind, and responsive design implementation CSS pre-processors (SASS, SCSS) and build tools (Vite, Webpack … PrimeUI, Axios, GitHub or equivalent version control Experience with MSAL and single sign-on (SSO) REST-based API development UI/UX, accessibility (WCAG/WAI), and usability standards Wireframing, prototyping, and high-fidelity mock-ups Use of Figma, Sketch or Adobe XD Testing tools such as Cypress, Mocha, Jest, Selenium, Playwright, Docker, Postman Experience in Agile and … and strategically valued team Hybrid structure with two remote days per week Involvement in architectural design, estimation and mentoring responsibilities Scope to evaluate new technologies and directly shape future development approaches Apply now More ❯

Identity. Develop advanced systems to detect and prevent account takeover (ATO) attempts. Optimize the performance, scalability, and resilience of cloud services. Champion continuous improvement in technical standards, tools, and development processes. Experience: Strong expertise in cloud computing and services (AWS experience preferred). Proficient in TypeScript and REST API development (NestJS experience preferred). In-depth understanding … encryption. Experienced in designing and implementing web services and microservices-based architectures. Excellent communication skills, with the ability to effectively bridge technical and non-technical stakeholders. Familiar with agile development methodologies; Scrum experience is a plus. Location: Manchester, 3 days in office Contract: 12 months Salary: Competitive day rate Please note, our client is unable to offer sponsorship for More ❯

Stack Developer (Zoho) to join the team on a permanent basis. The ideal candidate will have strong experience working with Zoho CRM and a solid background in full stack development , with the ability to design, develop, and implement technical solutions that enhance business processes. Key Responsibilities: Design, develop, and deploy full stack solutions to support business operations. Customise and … deliver meaningful insights. Analyse CRM and business data to support strategic, sales, and marketing objectives. Collaborate with internal teams to identify technical improvements and automation opportunities. Support the continued development, testing, and optimisation of the Zoho environment. About You: Proven experience in full stack development (frontend and backend). Strong understanding of Zoho CRM , including customisation, integration and … deluge scripting experience. Proficient in JavaScript, HTML, CSS, and SQL . Experience with API development and cloud-based systems . Excellent analytical and problem-solving skills. Strong communication and collaboration abilities. Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for More ❯