26 to 50 of 106 API Development Jobs in the UK

Development Team Leader Ipswich Full-time, Permanent £60,000 – £65,000 Hybrid (3 days in office) An exciting opportunity has arisen for a Development Team Leader to join a forward-thinking organisation in the professional services sector. This role is ideal for a hands-on technical leader with a strong background in software development, Agile delivery, and … practices, including Scrum, Azure DevOps, and CI/CD Implement and maintain high-quality software using .NET, C#, React/JavaScript, and automation frameworks. Design and manage microservices and API-driven architecture. Promote continuous improvement, innovation, and technical excellence. Key Requirements Proven experience leading or mentoring a software development team. Full lifecycle product development expertise Strong knowledge … of: .NET, C#, React/JavaScript Azure DevOps, pipelines, and automated testing frameworks Microservices architecture and custom/3rd party API development M365 technologies (Power Automate, Logic Apps, Canvas Apps) Interested? If you're a tech-savvy leader ready to drive innovation and mentor a talented team, we’d love to hear from you. Apply now to be More ❯

their digital services. You'll lead a team of developers in building scalable, secure, and user-centric applications using modern technologies and agile practices. This role combines hands-on development with strategic leadership and mentoring Responsibilities Lead the design, development, and deployment of high-quality software solutions Champion best practices in software engineering, including clean code, testing, and … CI/CD Collaborate with cross-functional teams including Product, Delivery, and Architecture Drive adoption of modern technologies and tools across development teams Mentor and support developers, fostering a culture of learning and innovation Ensure systems are secure, performant, and compliant with government standards Contribute to architectural decisions and long-term technical strategy Promote accessibility, sustainability, and user-centred … design About You Requirements Minimum of 10 years' experience leading software development teams in agile environments Strong understanding of software architecture, design patterns, and DevOps practices Experience with cloud-native development and infrastructure as code Excellent communication and stakeholder engagement skills Commitment to continuous improvement and technical excellence Experience in public sector or government digital services Familiarity with More ❯

with cross-functional teams to translate requirements into technical solutions Optimise application performance and ensure scalability, maintainability, and security best practices are met Stay up to date with web development trends, frameworks, and emerging technologies relevant to data applications EXPECTATIONS IN THE ROLE The following skills and attributes are essential for success in this role: Full-Stack Web Development … from front-end to back-end, with a focus on integrating data sources Data Visualisation Proficiency: Skilled in using D3.JS (or similar libraries) for rich, interactive graphics and charts API Integration Experience: Proven track record of consuming and building APIs for data exchange UI/UX Awareness: Understanding of user-centred design principles and the ability to collaborate on … a consulting or enterprise environment Proficiency in HTML, CSS, JavaScript, and frameworks such as React, Angular, or Vue.js Experience with D3.JS or similar advanced visualisation libraries Strong understanding of API development and integration (REST, GraphQL) Familiarity with database technologies and query languages (SQL, NoSQL) Experience working with data sources such as Microsoft Fabric’s Data Lake, Power.B.I., Qlik More ❯

Your New Company and Role A forward-thinking public sector organisation is looking for an experienced Java Developer to join a collaborative, agile team working on the development and enhancement of key digital services. You'll be contributing to the greenfield development of a new digital service and enhancing existing platforms to improve user experience, accessibility, and operational … to work in a multi-functional team that values continuous improvement, collaboration, and technical excellence. What You'll Need to Succeed You'll bring strong commercial experience in Java development and a passion for building robust, user-centred digital services. Key skills and experience include: Essential Skills Java 17+ and Spring Boot microservices REST API development SQL … and data modelling (ideally PostgreSQL) AWS and OpenShift CI/CD and modern DevOps practices Cloud monitoring and observability tools Infrastructure as Code Desirable Skills Front-end development with React, HTML/CSS, and accessibility awareness AWS services such as Lambda, S3, Aurora, API Gateway, CDK, CloudFormation Testing frameworks like Cypress Jenkins, Docker OAuth2, Spring Web Flow, Spring More ❯

and a proven track record, who ideally has some knowledge and experience of the commodity or financial trading sectors. Key Responsibilities: Full stack developer with around 8-10 years development experience, working in a agile development team to deliver robust enterprise-wide solutions utilising industry standard practices Design, develop, enhance and maintain applications using agreed coding standards and … quality targets. Ensure quality via code reviews and thorough unit testing. Liaise with immediate scrum team, other scrum/project teams, line manager and development lead to ensure accurate and complete delivery. Contribute to the development and implementation of software development best practices within the organisation. Writing clean and efficient code using relevant programming languages to implement … the designed features and functionality. Key Competencies & Skills: Knowledge of oil, wet bulk or energy trading and risk management business Software Development Methodologies: Understanding of Agile development practices and project management tools Communication Skills: Effective communication to collaborate with stakeholders, gather requirements, and explain technical concepts Problem-solving Skills: Ability to troubleshoot technical issues and identify creative solutions More ❯

in the technology industry, who are seeking a highly motivated Software Developer (.NET Core) to join their team on a contract basis. As a cutting-edge provider of app development, cyber security, and cloud services, they are committed to delivering high-quality solutions to their clients that empower businesses to thrive in the digital era. ROLE OBJECTIVE: We are … looking for a versatile Software Developer with strong experience in .NET Core. This role requires someone comfortable with both backend API development and CMS-based website implementation. You will work across multiple layers of the application stack, following best practices in Test-Driven Development (TDD) and Behaviour-Driven Development (BDD). RESPONSIBILITIES: • Develop and maintain backend More ❯

Tech Stack: Backend: Python (Flask/FastAPI/Django) Frontend: React/TypeScript Cloud Systems: AWS, Azure, GCP Are you an experienced Software Engineer with refined technical skills across API development and DevOps practices, looking for a new role in a forward-thinking, collaborative team We are working with an organisation well known for fostering creativity, collaboration, and … Building end-to-end web platforms using Python (Django). Collaborating within an agile, cross-disciplinary team to tackle technical and commercial challenges. Containerising applications with Docker for consistent development and release. Launching and managing applications within cloud-hosted infrastructure. Embedding testing into everyday development, with a focus on writing the right tests at the right layers. In … to the ongoing success and innovation of the organisation.Benefits: Flexible working environment Remote first/hybrid Competitive holiday & pensions Private healthcare And more! Interested and ready to take your Development career to the next level? Get in touch at or drop me a call for a confidential chat at .Senior Software Engineer | £55,000 - £70,000 | Cambridge | Python | Django More ❯

Tech Stack: Backend: Python (Flask/FastAPI/Django) Frontend: React/TypeScript Cloud Systems: AWS, Azure, GCP Are you an experienced Software Engineer with refined technical skills across API development and DevOps practices, looking for a new role in a forward-thinking, collaborative team? We are working with an organisation well known for fostering creativity, collaboration, and … Building end-to-end web platforms using Python (Django). Collaborating within an agile, cross-disciplinary team to tackle technical and commercial challenges. Containerising applications with Docker for consistent development and release. Launching and managing applications within cloud-hosted infrastructure. Embedding testing into everyday development, with a focus on writing the right tests at the right layers. In … the ongoing success and innovation of the organisation. Benefits: Flexible working environment Remote first/hybrid Competitive holiday & pensions Private healthcare And more! Interested and ready to take your Development career to the next level? Get in touch at (url removed) or drop me a call for a confidential chat at (phone number removed). Senior Software Engineer More ❯

/BDD principles Create and maintain RESTful and GraphQL APIs Collaborate with POs, BAs, and stakeholders to define solutions Mentor junior developers and promote best practices Drive improvements in development processes and tools What You Bring 5+ years of backend development experience Expertise in C#, .NET (preferably .NET 6+), and SQL Server Deep understanding of SOLID and OOP … principles Skilled in Git, Unit Testing (NUnit), and API development Familiarity with CI/CD pipelines and agile methodologies Strong communication and problem-solving skills Desire to grow within a dynamic and evolving team Why Join? This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be … part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters. Ready to build something that helps others-and builds your career in the process? Apply today. 48954MS INDMANS More ❯

/BDD principles Create and maintain RESTful and GraphQL APIs Collaborate with POs, BAs, and stakeholders to define solutions Mentor junior developers and promote best practices Drive improvements in development processes and tools What You Bring 5+ years of backend development experience Expertise in C#, .NET (preferably .NET 6+), and SQL Server Deep understanding of SOLID and OOP … principles Skilled in Git, Unit Testing (NUnit), and API development Familiarity with CI/CD pipelines and agile methodologies Strong communication and problem-solving skills Desire to grow within a dynamic and evolving team Why Join? This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be … part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters. Ready to build something that helps others-and builds your career in the process? Apply today. 48954MS INDMANS More ❯

Developer 6 months contract Day Rate: £365/day (Inside IR35) Location: Farnborough, UK (Hybrid 2 days on-site/week) About the Role: Youll be contributing to the development and enhancement of business-critical financial applications, building RESTful APIs and front-end components within a microservices-based architecture. The role offers the chance to work closely with analysts … operation of applications. Follow industry best practices and internal compliance standards. Required Skills & Experience: 8+ years of hands-on experience with .NET, C#, and Angular Strong experience with RESTful API development in microservice environments Solid understanding of .NET Core and event-driven architecture Experience working in Agile environments with cross-functional teams Familiarity with tools like JIRA, Confluence More ❯

dashboards, and generate ad hoc Power BI reports from Snowflake data tables. You will also integrate defect management and remediation capabilities for user owners/operators, ensuring compliance with development standards. Key Responsibilities: Workflow Tool Development: Architect and develop a robust tool to capture email traffic and translate it into actionable work queues and dashboards. Defect Management and … track, and remediate issues. Data Integration: Design and implement integration with Snowflake data tables for generating ad hoc Power BI reports. Compliance and Standards: Ensure adherence to companies established development standards and compliance requirements. Dashboard Creation: Develop insightful dashboards for real-time visibility into workflow processes and performance indicators. Collaboration: Work closely with the Transformation Portfolio Manager and stakeholders … project objectives with business needs. Technical Leadership: Provide guidance throughout the project lifecycle, from initial design through deployment and support. Documentation: Maintain comprehensive documentation of architecture, design decisions, and development processes. Quality Assurance: Implement rigorous testing and quality assurance practices to ensure tool reliability and performance. Skills and Experience: Highly skilled in interpreting business requirements and translating them into More ❯

student experience. How youll spend your day Build and Maintain Integrations : Design, implement, and maintain integrations that enable customers to connect their internal systems with the CAS Shield platform. API Development : Develop and optimize APIs and tools to ensure seamless interaction between our platform and customer systems. Collaboration : Work closely with product managers, engineers, and customer support teams … with the willingness to learn). Hands-on experience with SQL-based and NoSQL (Document-based) databases. Deep understanding of AWS services and cloud environments. Familiarity with AWS Cloud Development Kit (CDK)and services like Lambda, SQS, S3, Cognito, EventBridge, and more. Experience with DevOps practices, including CI/CD pipelines, Docker, and GitHub Actions. Strong knowledge of security … best practices for APIs and data privacy. Proficiency in unit, integration, and API testing using Jest. Ability to optimize software for performance and cost-efficiency in cloud environments. Excellent problem-solving abilities and troubleshooting skills. Strong communication and collaboration skills, with the ability to convey complex concepts to diverse audiences. Detail-oriented with a commitment to delivering high-quality More ❯

team to integrate TypeScript and React into our target architecture. Over time, the focus of this role will shift from maintaining legacy PHP systems to contributing directly to the development and optimization of our modernized technology stack. This is an opportunity to join the UK's number one investment services company, looking after over £149.7bn billion in assets on … quality, security, performance and CI/CD processes. Responsible in helping to document solutions and write ADRs 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 to support the development … Jest, Cypress, Backstop). Enjoys upskilling others in a team - you prioritise sharing knowledge Experience with CI/CD and Trunk Based Development. Understanding of Microservices & principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking. Understanding of event driven architecture. Experience performing code reviews. Experience operating within Agile framework. Aware of website performance More ❯

a skilled Integration Developer to design, develop, and maintain data integration solutions that facilitate seamless communication and data exchange between disparate systems. This role requires a background in software development, particularly in building and consuming APIs using C# or similar modern programming languages. You will work closely with various stakeholders to understand integration requirements, design workflows, and implement scalable … day of the role: Integration Design: Collaborate with business stakeholders, IT teams, and external partners to gather requirements and define workflows. Design data mappings, transformations, APIs, and message schemas. Development and Implementation: Utilize C#, .NET, or similar languages to develop, test, and deploy integration solutions. Build RESTful APIs and backend services and configure connectors with robust error handling. Integration … Platforms and Tools: Work with platforms like Azure Logic Apps, Azure Data Factory, SSIS, and tools such as Postman and Swagger to orchestrate data flows and integrate systems. API and Service Integration: Maintain APIs (REST/SOAP), focusing on authentication, authorization, and secure data exchange. Integrate APIs to support service-oriented and event-driven architectures. Data Transformation and Mapping More ❯

teams effectively - Proficient in server-side Kotlin or modern Java - Strong system analysis capabilities - Knowledge of Microservice Architectures - Familiarity with frameworks like http4k or Spring Boot - Experience in Agile development (Scrum/Kanban) - Expertise in TDD, pair programming, and CI/CD - Proficiency in REST API development Bonus Skills: - Experience with Cloud Platforms (AWS, GCP, Azure) - Knowledge More ❯

curiosity, adaptability, and practical problem-solving over perfectionism. This is an opportunity for a .NET Developer who wants to make a tangible impact while enjoying excellent stability and career development prospects. The Role Deliver full stack solutions using C#, .NET Core, MVC, Blazor, and microservices-driven APIs. Work with SQL/SQL Server Containerisation (Docker) and CI/CD … performance-actively supported by the business. About You Strong experience as a .NET Developer with excellent foundations in C# and .NET Core. Proficient in SQL/SQL Server and API development, with exposure to microservices. Comfortable working with containerisation (Docker) and cloud environments - AWS Experience in unit testing and CI/CD workflows. Bonus: knowledge of Xamarin or More ❯

Develop Interfaces with external supplier applications Upgrade/rewrite existing applications to use more efficient and newer technologies Knowledge Essential Skills C# .net Windows and Web Front end application development C# asp.net Web service and MVC/WEB API development TSQL - create and alter Stored Procedures, Tables etc Beneficial knowledge SQL Server Management - maintenance, setup, security SQL More ❯

technical concepts are understood by all stakeholders. The must haves: Proven experience with Azure cloud services (App Services, Functions, SQL Database), identity & access, and infrastructure as code. Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines. Solid understanding of secure coding practices and compliance in SaaS environments … technical debt against business value. The nice to haves: Degree level of education or equivalent in a relevant subject such as Computer Science, Computer Engineering, information management systems, software development or business information systems etc. Practical understanding of applied AI in data platforms. Wed also love you to: Ensure that the company values are reflected in your own work More ❯

adding value for Our Business As a Staff Engineer, you will also use your knowledge of Software Engineering to lead the shaping of new projects and support the professional development of less experienced Engineers. There are opportunities to become a people manager for your fellow engineers if that is something that appeals to you Successful candidates will have a … Java. A structured approach to systems analysis and development. A good understanding of Microservice Architectures. Experience with application frameworks such as http4k or Spring Boot. An understanding of Agile development methods such as Scrum or Kanban. Demonstrable experience in TDD, pair programming. Continuous Integration/Continuous Delivery REST API development and/or consumption. Desirable skills/ More ❯

End Software Engineer, utilizing Kotlin or Java to develop and support new features that add value for our business. Leading the shaping of new projects and supporting the professional development of less experienced engineers, leveraging your software engineering expertise. Opportunities to move into people management roles if interested. Demonstrating a passion for delivering innovative software solutions and working in … of Microservice Architectures. Experience with frameworks such as http4k or Spring Boot. Knowledge of Agile methods like Scrum or Kanban. Experience with TDD, pair programming, CI/CD, REST API development or consumption. Desirable skills/experience Experience with Cloud Platforms (AWS, GCP, Azure). Knowledge of Docker, Kubernetes. Familiarity with Jenkins, GitLab CI. Additional Information Application involves More ❯

Node.js, and TypeScript Lead the migration of existing systems from Node.js to Java to align with our strategic infrastructure goals Work with Docker and Kubernetes for containerization and streamlined development Build and manage CI/CD pipelines with GitHub Actions Monitor and maintain system performance, uptime, and deployments Write thorough unit and integration tests to ensure robust, reliable code … Collaborate with cross-functional teams to deliver innovative new features What We're Looking For: Extensive professional experience in backend development with Java and Node.js/TypeScript Solid knowledge of containerization tools (Docker, Kubernetes) Experience managing CI/CD pipelines with GitHub and GitHub Actions Strong understanding of SQL database management Computer Science or related degree Bonus Points For … Experience with Snowflake cloud data warehousing API development using GraphQL Soft Skills: Team player who thrives in a collaborative environment Strong problem-solving skills and ability to meet tight deadlines Effective communicator and adaptable to new tech Why Join Us? Work in London's financial hub with a leading institution committed to innovation and quality. Enjoy a hybrid More ❯

Node.js, and TypeScript Lead the migration of existing systems from Node.js to Java to align with our strategic infrastructure goals Work with Docker and Kubernetes for containerization and streamlined development Build and manage CI/CD pipelines with GitHub Actions Monitor and maintain system performance, uptime, and deployments Write thorough unit and integration tests to ensure robust, reliable code … Collaborate with cross-functional teams to deliver innovative new features What We're Looking For: Extensive professional experience in backend development with Java and Node.js/TypeScript Solid knowledge of containerization tools (Docker, Kubernetes) Experience managing CI/CD pipelines with GitHub and GitHub Actions Strong understanding of SQL database management Computer Science or related degree Bonus Points For … Experience with Snowflake cloud data warehousing API development using GraphQL Soft Skills: Team player who thrives in a collaborative environment Strong problem-solving skills and ability to meet tight deadlines Effective communicator and adaptable to new tech Why Join Us? Work in London's financial hub with a leading institution committed to innovation and quality. Enjoy a hybrid More ❯

with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis … Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are … As a Senior C# Developer/Software Engineer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior C# Developer/Software Engineer (C# .Net) opportunity. 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 ❯