76 to 100 of 104 API Development Jobs in the UK

small, accomplished team with a proven track record of successfully building companies from the ground up. They are now seeking a developer to design the architecture and lead the development of back-end services and web applications.The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design … and development, product development, and deployment of applications on both iOS and Android platforms. A strong business orientation and pragmatic approach are essential, with a demonstrated ability to align deliverables with corporate vision while understanding and maximizing their business value.This is an excellent opportunity for a Full Stack Developer to join a company at the forefront of creating … role provides a clear pathway for career progression, with the potential to advance to a directorship position in a rapidly expanding market. The Role: Shaping the architecture and the development of back-end services and web applications AWS, React, Node, NoSQL Define and own the technical strategy for back-end and front-ends 1 day a week on site More ❯

scalability from architecture to deployment. Write clean, well-documented, and testable code using industry best practices. Debug, profile, and optimize applications to ensure a frictionless user experience. Lead the development of new features and the enhancement of existing ones. Collaborate with product, design, and hardware teams to deliver user-centric solutions. Contribute to key architectural and technical decisions as … a foundational engineering team member. Report directly to the CTO and help shape the future of the product and platform. About You 5+ years of experience in full-stack development, ideally in early-stage startups. Deep experience with Vue or React, including frameworks like Nuxt or Next. Proven experience with Ionic for mobile application development. Strong backend experience with … Node.js, Typescript, and databases including PostgreSQL and Redis. Skilled in API development, database architecture, and authentication methods. Experience with both DynamoDB and PostgreSQL in production environments. A track record of technical ownership, showcased through open-source contributions or public demos/projects. Detail-oriented with strong problem-solving skills and the ability to drive initiatives to completion. Comfortable More ❯

small, accomplished team with a proven track record of successfully building companies from the ground up. They are now seeking a developer to design the architecture and lead the development of back-end services and web applications. The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design and development, product development, and deployment of applications on both iOS and Android platforms. A strong business orientation and pragmatic approach are essential, with a demonstrated ability to align deliverables with corporate vision while understanding and maximizing their business value. This is an excellent opportunity for a Full Stack Developer to join a company at the … role provides a clear pathway for career progression, with the potential to advance to a directorship position in a rapidly expanding market. The Role: Shaping the architecture and the development of back-end services and web applications AWS, React, Node, NoSQL Define and own the technical strategy for back-end and front-ends 1 day a week on site More ❯

back-end systems. Support the IT team in resolving platform-related incidents and liaise with third-party providers when necessary. Stay up to date with best practices in .NET development, cloud computing, and modern software architecture. Contribute to system documentation, including design specifications and unit testing. Operational Excellence Demonstrate professionalism in all interactions with stakeholders and third parties. Provide … both technical and non-technical team members. Essential Knowledge, Skills & Experience Skills Strong expertise in C# and .NET Core/.NET 6+ development. Solid experience with RESTful and GraphQL API development. Understanding of database management (SQL Server, Entity Framework, or other ORM tools). Experience with Azure cloud services, including hosting, serverless functions, and application insights. Familiarity with DevOps More ❯

back-end systems. Support the IT team in resolving platform-related incidents and liaise with third-party providers when necessary. Stay up to date with best practices in .NET development, cloud computing, and modern software architecture. Contribute to system documentation, including design specifications and unit testing. Operational Excellence Demonstrate professionalism in all interactions with stakeholders and third parties. Provide … both technical and non-technical team members. Essential Knowledge, Skills & Experience Skills Strong expertise in C# and .NET Core/.NET 6+ development. Solid experience with RESTful and GraphQL API development. Understanding of database management (SQL Server, Entity Framework, or other ORM tools). Experience with Azure cloud services, including hosting, serverless functions, and application insights. Familiarity with DevOps More ❯

Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience as a Solution Architect or Solution Designer Proficiency in cloud platforms skilled with API development, message buses and languages such as C#, Python, or PHP Excellent communication and stakeholder management skills Strategic thinker with a collaborative mindset and strong attention to technical More ❯

Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience as a Solution Architect or Solution Designer Proficiency in cloud platforms skilled with API development, message buses and languages such as C#, Python, or PHP Excellent communication and stakeholder management skills Strategic thinker with a collaborative mindset and strong attention to technical More ❯

and develop strategies to manage technical debt. Culture Building: Foster a culture of innovation, experimentation, and continuous learning. Cross-team Contributions: Participate in architecture discussions and support wider software development initiatives. User Support: Provide responsive support for urgent issues affecting system users. Role Requirements Technical Skills Core Requirements: 3+ years of experience in software development. Proficiency in Linux/… available services. Open-mindedness and a willingness to learn new technologies as needed. Technical Expertise by Team Focus Embedded & Data Platform Team: Expertise in C and C++ development. Firmware development experience for Embedded and IoT devices. API development experience. Strong understanding of computer architecture, operating systems, and device drivers. Proficiency in debugging firmware for microcontrollers and SoCs. More ❯

deployment with automated test suites Communicate technical concepts clearly to non-technical audiences Participate in 2nd-line support, including occasional out-of-hours coverage Stay engaged with the wider development community and share best practices Essential Skills & Experience Strong experience with Java 21 or later Solid understanding of TDD and BDD methodologies Proven track record in Agile environments Experience … with micro services, API development, and Unix-like systems Ability to quickly learn new tools and techniques Familiarity with Responsive Web Design principles Desirable Skills Knowledge of Jackson, JAX-RS, Mockito, ActiveMQ/Kafka Experience with MongoDB or other document databases Background in high-traffic websites and large data sets Reasonable Adjustments: Respect and equality are core values More ❯

the Project Manager, architects, clients & other stakeholders to implement MuleSoft APIs. This role will require knowledge of MuleSoft's Anypoint Studio & Anypoint Platform, which includes Design Center, Runtime Manager, API Manager, Exchange, etc. You must be capable of understanding business requirements, working with stakeholders & implementing complex integrations. Responsibilities: Designing & developing integration solutions using MuleSoft Anypoint Platform. Building & maintaining integration … modules. Collaborating with other developers & stakeholders to understand business requirements & translate them into integration solutions. Required Skills: Good experience of: integration concepts & technologies. MuleSoft Anypoint Platform & components (Mule ESB, API Manager, CloudHub, etc.) Java programming & experience with other programming languages such as XML, JSON, SQL Agile software development methodologies. Cloud-based integration platforms such as Amazon Web Services … AWS) or Microsoft Azure. API design and development. Knowledge of RESTful web services, SOAP, & other integration protocols Familiarity with API design & development best practices Strong problem-solving skills & ability to troubleshoot integration issues. Good communication & teamwork skills Strong understanding of Agile development methodologies & experience working in an Agile environment Nice to Have Skills: Experience with cloud More ❯

delivery. Required Skills & Experience: Proven background as a Software Architect or Lead Engineer. Strong experience with Swift, particularly in mobile app development. Exposure to Swift Vapor for server-side API development (desirable, not essential). Proficiency in modern JavaScript/TypeScript stacks Node.js, Angular. Experience in small or mid-sized software companies. Strong communication and collaboration skills. Salary More ❯

data scientists, and public health experts) and with external collaborators, you will be a team player with excellent mathematical background, have a good understanding of modern programming techniques including API development and software packaging. You should also have excellent report writing skills and an awareness of modelling infectious disease processes. Your role will be to explore and define … best practice knowledge transfer between institutions including parameter synthesis, data interchange, and development of guidelines and/or a DSL for epidemiological model reporting. About us We pride ourselves as being an employer of choice, where Everyone Matters promoting equality of opportunity to actively encourage applications from everyone, including groups currently underrepresented in our workforce. UKHSA ethos is to … the techniques in the core skills ( Software, Mathematics, Statistical modelling, Spatial analysis, Spatial analysis, Data analysis) below . Particular weight will be given to software skills. Experience with software development process (version control, unit testing, continuous integration, etc.) Excellent communication skills written, verbal, tele/videoconferencing. Able to work together with others to achieve goals (team player). An More ❯

enthusiastic and detail-oriented Project Manager to join our team delivering some major new accessibility-focused features on the National Rail Enquiries digital channels. This project will involve the development of the features across both web and mobile applications, aimed at improving accessibility for rail passengers. Additionally, the role will encompass overseeing the backend API development to … multiple work streams and teams. Work closely with the RDG procurement team to lead an open market procurement process to identify and select suitable vendors for the front-end development of the project. Ensuring the project is running on time and to budget. Dealing with changes to the project as and when necessary. Ensuring the outcomes and benefits of … Subsidised private medical care Healthcare cash plan scheme Employee Assistance Programme scheme Flexible working 30 weeks full pay for maternity, adoption and shared parental leave (subject to eligibility) Personal Development Days Employees may sell up to a maximum of five days' leave. Employees can buy up to a maximum of five days' leave. These figures will be pro rata More ❯

intelligence, document processing, and risk management. Key Responsibilities: Architect & Implement: Design and deploy secure AI services from lab to production, ensuring they are scalable and compliant with industry standards. API Development: Create robust APIs for large language models (LLMs), retrieval-augmented generation (RAG) pipelines, agentic workflows, and document intelligence systems. Cybersecurity & Privacy: Integrate cybersecurity and data privacy controls More ❯

to clean energy and transport in Africa. Joining our growing team, you'll be working to match our ambition to radically reimagine transport and energy in Africa through the development of the MOPO Platform - the digital backbone that powers our energy distribution network across the continent. You'll be working across the full stack using Python/Django, Vue.js … Agile processes, contributing to planning and refinement sessions We would like to hear from you if you have the following experience Strong proficiency in Python and Django for backend development Good working knowledge of Vue.js (or similar Javascript framework, e.g. React) In-depth knowledge of MariaDB and SQL RESTful API design and development Version control systems (e.g. … and maintenance (e.g. nginx, cron, package managers) Strong debugging skills (e.g. PyCharm debugger, pdb, Sentry) The following would be a strong plus Experience building platforms for emerging markets Android development experience - our network of agents use our Android app to manage their batteries Knowledge of IoT or hardware integration Experience with distributed systems or offline-first architectures Background in More ❯

Lead C# Developer/Software Engineer (C# .Net API AWS) Nottingham/WFH to £80k Opportunity to progress your career in a senior, hands-on leadership role at a SaaS tech company. As a Senior C# Developer you'll join an Agile team with a focus on designing and developing payment and billing applications. You'll be working with … a modern tech stack, with a focus on backend C# .Net and API development. There's a supportive team environment where you'll help to mentor others to reach their full potential, taking ownership of technical projects and contributing to high level architecture discussions. Location/WFH: There's a remote interview and onboarding process and you'll be … most of the time, meeting up with the team for constructive meetings once a month/quarter in the Nottingham office. About you: You have strong backend C# .Net development skills You have experience of building REST APIs You have experience with AWS You have a good understanding of databases with SQL skills You're collaborative and have great More ❯

an Agile environment. Driving best practices around testing, clean code and CI/CD pipelines. Mentoring junior developers and contributing to knowledge sharing. Requirements Strong commercial experience in Java development, ideally in product or platform teams. Strong knowledge of Spring Framework/Spring Boot. Hands-on experience with AWS for deployment, configuration and monitoring. Comfortable with RESTful API More ❯

Axway API Developer (SC Cleared) ?? 6 months contract Inside IR35 ?? £500 to £650 a day ??Remote Working (UK based) *Active SC Clearance is needed* A top-tier defense organization is looking for an experienced Axway API Developer/Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and … liaising with stakeholders to define requirements and design comprehensive solutions. To be successful in this role, you should have a solid foundation in: Axway's core products: Policy Studio, API Gateway, and API Manager. Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. Data and messaging formats: JSON, XML, SOAP, and REST. Linux scripting and environments. Using … and deployments. 6 months contract Inside IR35 - Remote Working - ?? £500 to £650 a day *Active SC Clearance is needed* If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you. If the above sounds of interest to you then please apply directly to the AD or More ❯

Axway API Developer (SC Cleared) 6 months contract Inside IR35 £500 to £650 a day Remote Working (UK based) *Active SC Clearance is needed* A top-tier defense organization is looking for an experienced Axway API Developer/Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and … liaising with stakeholders to define requirements and design comprehensive solutions. To be successful in this role, you should have a solid foundation in: Axway's core products: Policy Studio, API Gateway, and API Manager. Key communication protocols: SFTP, HTTPS, SSL/TLS, and oAuth. Data and messaging formats: JSON, XML, SOAP, and REST. Linux scripting and environments. Using … and deployments. 6 months contract Inside IR35 - Remote Working - £500 to £650 a day *Active SC Clearance is needed* If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you. If the above sounds of interest to you then please apply directly to the AD or More ❯

skills: JavaScript, TypeScript, HTML, CSS and Node. Experience : 6+ years Location : London , UK We at Coforge are seeking “ Frontend Developer ” with the following skill-set: Strong proficiency in web development languages such as JavaScript, TypeScript, HTML, and CSS. Experience with Node.js and server-side technologies, including Express.js. Bachelor's degree in Computer Science, Software Engineering, or a related field. … Solid understanding of software development principles (SOLID), version control systems, object-oriented programming (OOP) concepts, troubleshooting, and data modeling. Knowledge of frontend performance optimization techniques. Experience with code refactoring, unit testing, and debugging. Familiarity with clean code practices. Proficient in working with relational databases such as MySQL and Microsoft SQL Server, as well as non-relational databases like MongoDB. … implement, and optimize database schemas and queries. Understanding of CI/CD pipelines and tools such as GitLab CI/CD, Jenkins, or CircleCI. Nice-to-Haves Experience in API design and development using REST, GraphQL, or SOAP. Experience with Progressive Web Applications. More ❯

skills: JavaScript, TypeScript, HTML, CSS and Node. Experience : 6+ years Location : London , UK We at Coforge are seeking “ Frontend Developer ” with the following skill-set: Strong proficiency in web development languages such as JavaScript, TypeScript, HTML, and CSS. Experience with Node.js and server-side technologies, including Express.js. Bachelor's degree in Computer Science, Software Engineering, or a related field. … Solid understanding of software development principles (SOLID), version control systems, object-oriented programming (OOP) concepts, troubleshooting, and data modeling. Knowledge of frontend performance optimization techniques. Experience with code refactoring, unit testing, and debugging. Familiarity with clean code practices. Proficient in working with relational databases such as MySQL and Microsoft SQL Server, as well as non-relational databases like MongoDB. … implement, and optimize database schemas and queries. Understanding of CI/CD pipelines and tools such as GitLab CI/CD, Jenkins, or CircleCI. Nice-to-Haves Experience in API design and development using REST, GraphQL, or SOAP. Experience with Progressive Web Applications. More ❯

skills: JavaScript, TypeScript, HTML, CSS and Node. Experience : 6+ years Location : London , UK We at Coforge are seeking “ Frontend Developer ” with the following skill-set: Strong proficiency in web development languages such as JavaScript, TypeScript, HTML, and CSS. Experience with Node.js and server-side technologies, including Express.js. Bachelor's degree in Computer Science, Software Engineering, or a related field. … Solid understanding of software development principles (SOLID), version control systems, object-oriented programming (OOP) concepts, troubleshooting, and data modeling. Knowledge of frontend performance optimization techniques. Experience with code refactoring, unit testing, and debugging. Familiarity with clean code practices. Proficient in working with relational databases such as MySQL and Microsoft SQL Server, as well as non-relational databases like MongoDB. … implement, and optimize database schemas and queries. Understanding of CI/CD pipelines and tools such as GitLab CI/CD, Jenkins, or CircleCI. Nice-to-Haves Experience in API design and development using REST, GraphQL, or SOAP. Experience with Progressive Web Applications. More ❯

We are seeking an experienced SC Cleared (SC) Axway API Developer/Administrator to join an established team, supporting multiple projects. *Due to the nature of the project and role, the successful candidate will have a valid UK SC Clearance prior to the start. You will be responsible for designing, developing, and deploying Axway policies, supporting DevOps-driven automation … using Axway Policy Studio v7.7 . Support automated testing and code deployment using a DevOps toolset . Provide technical support and resolve integration issues. Administer Axway environments (Policy Studio, API Manager, Cassandra, API Gateway). Deploy Axway patches, monitor system capacity, and deliver service improvements. Liaise with customers to gather requirements and deliver solutions. Technical Knowledge Axway API Gateway 7.7 SFTP, HTTPS, SSL/TLS OAuth, JSON, XML, SOAP, REST, MIME Linux Scripting Experience Required Proven experience delivering API Gateway policies and Managed File Transfers (MFT) using Axway API Gateway 7.7 . Strong communication skills with the ability to engage stakeholders at all levels. Contract Details Duration: 6 months (initial) Start: September 2025 Location: Remote More ❯

Lead Software Engineer/Developer (C# .Net API AWS) Nottingham/WFH to £80k Opportunity to progress your career in a senior, hands-on leadership role at a SaaS tech company. As a Lead Software Engineer you'll join an Agile team with a focus on designing and developing payment and billing applications. You'll be working with a … modern tech stack, with a focus on backend C# .Net and API development. There's a supportive team environment where you'll help to mentor others to reach their full potential, taking ownership of technical projects and contributing to high level architecture discussions. Location/WFH: There's a remote interview and onboarding process and you'll be able … most of the time, meeting up with the team for constructive meetings once a month/quarter in the Nottingham office. About you: You have strong backend C# .Net development skills You have experience of building REST APIs You have experience with AWS You have a good understanding of databases with SQL skills You are collaborative, happy to mentor More ❯

to join their team. This position is key to supporting ongoing projects and driving strategic initiatives. As a Go Integration Developer, you will play a crucial role in the development of integrations that will have a real impact on the business and its customers. Responsibilities: Collaborate with cross-functional teams to design, develop, and implement Go-based integrations. Ensure … scalability, and security of integration solutions. Troubleshoot and resolve integration issues in a timely manner. Maintain and support existing integrations as needed. Essential Skills & Experience: Strong experience in software development using Go programming language. Proficiency in API design and development. Familiarity with cloud services and microservices architecture. Solid understanding of data structures and algorithms. Excellent problem-solving skills More ❯