14 of 14 Contract API Development Jobs in England

goals. ? Ensure product & service quality following internal and external standards. ?? Improve software processes & tooling for efficiency. ?? Ensure technical standards, documentation & processes are consistently applied. ?? Assist in refining requirements into development backlogs and demo working software in iteration reviews. ?? Support and sustain CI/CD pipelines using tools like Bitbucket, Jenkins, and Artifactory. ?? Write and lead software designs , presenting clear … solutions and guiding developers. ?? Review code & resolve issues across the project lifecycle. ?? Support technical sales & effort estimation for new initiatives. ? Essential Experience ?? 5+ years C#/.NET development (including Android). ?? 5+ years REST/RESTful API development . ?? Strong OOP, UML, Design Patterns, SOLID principles. ?? 5+ years in Agile (Scrum, Kanban, agile mindset) . ?? Hands-on … experience with SonarQube & addressing security vulnerabilities. ?? CI & automated testing (TDD/BDD). ?? Unit testing & coverage tools (e.g., NUnit, SonarQube, AltCover). ? Desired Experience ?? Embedded software development knowledge. ?? Android development (Xamarin is a plus). ??? Windows CE/Embedded & .NET Compact Framework. ?? C/C++ on Linux (embedded). ?? JavaScript technologies. ??? Database technologies. ?? JIRA for workflow management. ??? Source 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 ❯

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 ❯

and GitHub. * Troubleshoot, debug, and optimise applications. * Maintain technical documentation. Essential Skills * Core Java, Spring Boot, Spring MVC, Hibernate * React 16+ and Angular * SQL, JPA, and relational databases * RESTful API development * CI/CD and version control (GitHub) * Agile/Scrum experience Desirable Skills * Cloud platforms (AWS, Azure, GCP) * Docker/Kubernetes * UI/UX principles and testing More ❯

Role/Job Title: Mainframe Developer Work Location: London 250 Bishopsgate (on site) The Role As a Mainframe Developer , you will work closely with the technical team on development and implementation journeys. You will be responsible for designing, developing, and maintaining high-performance applications using technologies such as COBOL and CICS web services to support critical business processes. Your … Developer or similar role. Strong knowledge of programming languages, including CICS Web Services, COBOL, JCL, and SQL. Experience with IBM mainframe systems and tools. Good understanding of the software development lifecycle. Ability to work independently and in a team environment. Excellent problem-solving and analytical skills. Strong attention to detail and ability to deliver high-quality work. Effective communication … and collaboration skills. Your Profile Essential Skills/Knowledge/Experience: Experience working in z/OS Connect EE and DB2 Rest with extensive knowledge of CICS Web Services. Development experience using FileAid, Xpeditor, IBM Explorer for z/OS, and Visual Studio. Proficient with SOAP, WSDL, and JSON; comprehensive understanding of SOA and RESTful APIs. Experience with code More ❯

reused. You'll be part of a small, agile, multi-disciplinary team working on open data platforms and services that make a real difference. This is a hands-on development role with strategic influence, where you'll help shape architecture, engineering practices, and delivery standards across a growing programme team of 60+ people. Key Responsibilities Design, build, and maintain … Ensure code quality, documentation, and maintainability Align delivery with recognised standards including the Technology Code of Practice and Service Standard Essential Skills & Experience 4+ years of experience in software development Strong proficiency in Ruby (Python is a bonus) Experience with microservices or service-oriented architecture Skilled in writing clean, well-documented code and taking ownership of the development process Comfortable working in agile , cross-functional teams Familiarity with: Docker & Kubernetes Git & version control API development (REST, GraphQL) Cloud deployment Open data platforms or search technologies Desirable Experience working with or within government or public sector teams Background in open data , civic tech, or mission-driven organisations Working Arrangements Base location: London or Manchester (2 days 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 ❯

in Agile teams with pair programming Support applications (including occasional out-of-hours) Essential skills: Strong Java (21+) experience TDD/BDD and Agile background Large-scale microservices expertise API development and integration Unix/Linux knowledge Desirable skills: Jackson, JAX-RS, Mockito, Kafka or ActiveMQ MongoDB/NoSQL databases High-traffic and large data systems experience Due More ❯

across UK Government for digital redaction and data sensitivity review. You'll join a multi-disciplinary team delivering scalable, secure, and high-performance software solutions. Key Responsibilities Front-End Development Build responsive user interfaces using HTML, CSS, JavaScript, TypeScript, and React. Ensure cross-browser compatibility and optimised user experience. Back-End Development Develop APIs and microservices using Java … end tests using JUnit, Test Containers, Vitest, and StoryBook. Conduct code reviews to maintain quality and consistency. Security & Documentation Implement authentication, authorisation, and other security best practices. Maintain internal API and code documentation. Essential Skills Strong experience with React, TypeScript, Java, Spring Boot, and RESTful API development. Proficient with SQL databases and CI/CD tools. Hands-on More ❯

infrastructure? We are looking for someone immediately available with a strong track record of delivering robust, scalable, and secure integration solutions across diverse platforms. With hands-on experience in: API development & integration (REST, SOAP) Middleware platforms (MuleSoft, Dell Boomi, Azure Logic Apps) Data transformation & ETL pipelines Cloud and on-premise system integration If you have technical expertise and More ❯

Axway API Developer (SC Cleared) ?? 6 months contract Inside IR35 ?? £500 to £650 a day ??Remote Working (UK based) 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 active SC clearance is required. … 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 … DevOps toolsets to automate testing and deployments. 6 months contract Inside IR35 - Remote Working - ?? £500 to £650 a day 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) 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 active SC clearance is required. … 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 … DevOps toolsets to automate testing and deployments. 6 months contract Inside IR35 - Remote Working - £500 to £650 a day 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 ❯

collaborating with stakeholders to align solutions with business goals. Key Responsibilities: Define technical architecture and integration patterns across Salesforce clouds. Guide developers in Apex, Lightning Web Components (LWC), and API development. Manage code reviews, CI/CD, and release processes. Partner with Product Owner and Scrum Master for sprint planning and prioritization. Architect & Lead: Define Salesforce technical architecture and … integration strategies across multiple clouds. Guide & Mentor: Support developers in Apex, Lightning Web Components (LWC), and API development. Govern & Deliver: Oversee code quality, peer reviews, CI/CD pipelines, and release management. Collaborate & Align: Partner with Product Owners and Scrum Masters to plan and deliver sprint outcomes. Innovate & Optimise: Introduce best practices in DevOps, performance, and design scalability. Essential … qualifications: Experience: 8+ years in Salesforce development and architecture; Salesforce Certified Technical Architect (CTA) or equivalent experience preferred. Extensive Salesforce development and architecture experience. Proven ability to define and deliver scalable, secure Salesforce solutions. Expertise in Apex, LWC, API integration, and CI/CD processes. Experience leading and mentoring technical teams in an Agile/Scrum environment. More ❯

Axway API Developer (SC Cleared) 6 months contract Inside IR35 £500 to £650 a day Remote Working (UK based) 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 active SC clearance is required More ❯