301 to 325 of 506 API Development Jobs in the UK excluding London

Java API Developer x3 Northampton £55,000 - £60,000 + Benefits A leading consultancy-based organisation is currently looking to recruit a number of Java API Developers to partner with a financial services-based organisation who have a passion for designing and building robust, scalable applications. The successful skilled developer will join a dynamic engineering team, where you … in peer code reviews and contribute to continuous improvement Ensure systems are secure, scalable, and optimised for performance Skills & Experience: Strong hands-on experience in Java, Spring Boot, and API Gateway Solid understanding of OOP, Core Java, and Advanced Java Proficient with REST API, Spring Core, Spring MVC, and Microservices Architecture Familiarity with tools and technologies such as … Maven, Gradle SOAP, Junit, Oracle Jenkins, Nexus Git, JBoss/Tomcat Linux/UNIX shell scripting JIRA, Exec API Exposure to cloud platforms (e.g., OpenShift V3, AWS, or Spring Cloud) is desirable More ❯

public holidays observed in the Republic of Ireland. Mandatory Requirements (Pass/Fail) ü Experience Level: The candidate must have more than 1+ years of relevant Java/JEE Development experience at a junior level. ü Availability: The candidate must be available to commence work from 3rd November 2025. ü English Language Proficiency: The candidate must be fluent in … with experience using industry-standard frameworks, e.g. Quarkus/Spring Boot. Coding in adherence to the standards of the application in question. Completing assigned tasks related to phases of development lifecycle of enterprise applications within given scope and timeframes requirements. Maintaining, tuning and repairing applications to keep them performing according to technical and functional specifications. Performing preventive maintenance activities … Microservice and API development (RESTful, experience of REST design and implementation). Understanding API security protocols (OAuth 2.0/0penID Connect). Knowledge of Kubernetes, API managers and WebLogic. Experience with OpenShift Container platform, 3scale API and KeyCloak. Testing frameworks and TDD (like Cucumber or Junit). Databases: Relational (Oracle). Integration of technical and More ❯

Solutions Architect (Integration | API Design)St Albans (Hybrid) Compensation: Salary +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role: We're seeking … disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead the standardisation of tooling, practices, and documentation across development teams, establishing a single source of truth to drive consistency and quality in solution delivery. Key Responsibilities: Own and deliver end-to-end architecture across microservices, APIs, message buses … emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP Ability to clearly document and present architecture decisions, trade-offs, and constraints to technical and More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: Salary +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role: We're seeking … disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead the standardisation of tooling, practices, and documentation across development teams, establishing a single source of truth to drive consistency and quality in solution delivery. Key Responsibilities: Own and deliver end-to-end architecture across microservices, APIs, message buses … emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP Ability to clearly document and present architecture decisions, trade-offs, and constraints to technical and More ❯

with long-term strategy Develop prototypes and proof-of-concepts to validate ideas with stakeholders Code solutions using Python, C#, JavaScript Guide junior team members in analysis techniques and development practices SQL skills and understanding of data integration Business analysis certification or formal training Experience in healthcare or social care sectors Knowledge of Power BI, Power Automate, or similar … business tools API development and system integration experience Agile/Scrum methodology experience Interested or for more information send CV #J-18808-Ljbffr More ❯

UK business who are looking for a Senior Developer, as they continue to invest in technology and digital transformation across CRM, service delivery, and SaaS solutions This has strong development opportunities with a clear route to a Lead Developer role.On offer is a salary of up to £65k and a flexible working pattern with the opportunity to work mostly … you’ll also be responsible for troubleshooting and optimising application performance to deliver the best possible user experience. Requirements: Strong experience with Azure infrastructure, UI/UX, and RESTful API development, along with a solid grasp of SOLID principles and CI/CD pipelines. Strong collaboration and stakeholder management skills, with the ability to work effectively with different More ❯

join a multi-disciplinary team supporting a large-scale programme within UK central government. This role involves a combination of supporting complex live services and contributing to ongoing project development in a fast-paced agile environment. Candidates must hold active SC clearance and have recent experience working on central government digital services . Key Responsibilities: Manage and resolve live … tools like ServiceNow Triaging and prioritising incoming issues based on severity and business impact Implement fixes and enhancements directly or in collaboration with other technical teams Contribute to project development tasks as required Collaborate with Scrum Masters, DevOps engineers, testers and delivery leads within an established team Essential Skills & Technologies: Java (including Spring Boot and REST API development More ❯

collaborate with some of the most talented people in the industry. Rockstar is on the lookout for a talented Mobile Engineer with a strong understanding of iOS and Android development to help us build and maintain our mobile platform, including our SDK, backend platform and build systems. This is a full-time permanent position based out of Rockstar's … QUALIFICATIONS Minimum 5+ years of experience with iOS and Android development. A degree in Computer Science/related discipline, or equivalent experience. SKILLS Expert in Swift and the iOS development workflow. Expert in Java and the Android development workflow. Strong experience with Flutter for UI/UX. Strong experience with Ruby for build automation. Strong CS fundamentals, including … excellent understanding of OO design patterns and concepts. Experience with API design and development. Experience with source control, preferably Git. PLUSES Please note that these are desirable skills and are not required to apply for the position. Experience with web backend development, Golang, PostgreSQL, C# considered a big plus. Previous experience with game or platform development. Self-motivated More ❯

Solutions Architect role at Army Marketing 2 days ago Be among the first 25 applicants Join to apply for the Solutions Architect role at Army Marketing Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: Salary +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability … disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead the standardisation of tooling, practices, and documentation across development teams, establishing a single source of truth to drive consistency and quality in solution delivery. Key Responsibilities Own and deliver end-to-end architecture across microservices, APIs, message buses … emerging technologies What We're Looking For Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP Ability to clearly document and present architecture decisions, trade-offs, and constraints to technical and More ❯

and designing integration solutions to connect Dynamics 365 Finance and Operations with other systems such as ProjOps, Dataverse, Data Lake, Synapse, Enterprise Data Warehouse (EDW), or third-party applications. Development: Writing code and developing custom solutions using relevant programming languages and technologies (such as X , C#, SQL, XML, JSON) to create seamless data flow and functionality between different systems. … API Development: Utilizing APIs (Application Programming Interfaces) provided by Dynamics 365 Finance and Operations and other systems to facilitate data exchange and communication between them. Data Mapping and Transformation: Defining data mapping rules and implementing data transformation processes to ensure data consistency and accuracy across integrated systems. Testing and Debugging: Conducting thorough testing of integration solutions to identify … methodologies to continuously improve integration solutions and processes. Skills and Competencies A relevant number of years' of experience developing integrations for Microsoft Dynamics 365 Finance & Operations Skills of X development, including solutions. T-SQL development skills Cloud Integration specialisms familiar with the range of Azure integration technologies Functions Logic App Azure Data Lake Azure Synapse Azure DevOps Experience More ❯

in areas such as cloud migration, as well as supporting, maintaining and implementing change to existing products and services. To do this you must have experience of full stack development and working with front end and back-end technologies. You will have experience of: Develop scalable C# .NET Core applications, including API development, with a focus on More ❯

Understanding of applying machine learning to solve business problems Experience in predictive and prescriptive analysis, deriving insights, and articulating findings Excellent written and presentation skills Willingness to learn software development best practices, including TDD (pytest or similar) Nice to Haves Graduate or postgraduate qualification in relevant disciplines (engineering, mathematics, physics, statistics) Experience in finance, insurance, or e-commerce data … science Experience deploying in cloud environments Knowledge of neural networks, TensorFlow, CatBoost, XGBoost, SKlearn, Pandas Experience with API development, SQL, software engineering, CI/CD Diversity and Flexible Working At Hiscox, we value our people. We hire the best for the role and are committed to diversity and inclusion. We support flexible working arrangements and have introduced hybrid More ❯

to the highest imaginable standard. You are demonstrably: Capable of developing performant software solutions in Python 3 on Unix Able to write shell scripts and debug them Aware of development principles/systems such as test-driven-development, continuous integration, software architecture, and revision control solutions Able to work with customers and colleagues to refine requirements into production … Software Engineer, Firmware Engineering Cambridge, England, United Kingdom 1 week ago Senior Software Engineer, UI Performance Cambridge, England, United Kingdom 1 week ago Senior Software Engineer, C/C++ API Development Cambridge, England, United Kingdom 2 weeks ago Cambridge, England, United Kingdom 6 days ago Cambridge, England, United Kingdom 1 week ago Senior Software Engineer, Machine Learning Cambridge More ❯

pricing teams in order to help support maturation of analytics practice within the organization. Write high quality python code using industry best practice for model training and deployment Continuous development of knowledge base and experience, including researching new techniques and technologies, communicating this back with the team Skills criteria Experience of data science, advanced analytics or a genuine interest … mining) used to draw key business insights and clearly articulate findings for target audience Exceptional written communications skills and effective presentation skills Willingness to learn best practice in software development Strong python programming skills Experience of TDD (pytest or other testing framework) Desirable skills Graduate or Postgraduate qualification or equivalent experience in a relevant discipline e.g. engineering, mathematics, physics … insurance or Ecommerce is an advantage but not required Experience of deployment in a cloud environment Experience with neural networks and Tensor Flow, CatBoost, XGBoost, SKlearn, Pandas Experience with API development SQL experience Software engineering experience DevOps/MLOps experience Good working understanding of CI/CD If you hold the experience and technical skills outlined above which More ❯

location in which the candidate is applying. Seniority level Seniority level Not Applicable Employment type Employment type Full-time Job function Job function Engineering and Information Technology Industries Software Development, IT Services and IT Consulting, and Technology, Information and Internet Referrals increase your chances of interviewing at Splunk by 2x Sign in to set job alerts for “Solutions Engineer … ago Reading, England, United Kingdom 1 month ago Reading, England, United Kingdom 1 week ago Staines-Upon-Thames, England, United Kingdom 4 hours ago Solutions Architect - Azure Cloud and API Development - to £80k - ID40751 Wokingham, England, United Kingdom 3 weeks ago Feltham, England, United Kingdom 1 week ago Oxford, England, United Kingdom 2 days ago Reading, England, United More ❯

knowledge of VMware, VirtualBox, or other virtualization technologies including hypervisor-level configurations. Networking Knowledge: Solid understanding of networking fundamentals, especially TCP/IP protocols, port management, and firewall configurations. API Development & Testing: Experience in developing REST APIs and performing integration using tools such as MuleSoft or Postman. Configuration Management: Capable of developing and integrating Ansible playbooks for automated More ❯

JavaScript/TypeScript API Engineer Contract Length: 6 Months Location: Manchester (1 Day a week in Manchester City Centre Office) Rate: Outside IR35 £350 - £400 per day *Immediate Start* Join a fast-moving product consultancy delivering high-impact software for a broad mix of clients across a range of sectors. They're now looking for an experienced contractor to … support a critical project focused on API development and complex system integration. The Role: You'll be part of a small, highly cooperative engineering team working on a SaaS platform designed to streamline and automate operational workflows. The focus is on building out and refining backend APIs, integrating third-party services, and improving the overall scalability and reliability … of the system. Tech Stack: TypeScript & JavaScript Node.js with Express n8n (workflow and automation integrations) PostgreSQL Permit.io (RBAC and auth) API best practices (rate limiting, downstream HTTP integrations) GraphQL (mostly migrating from) Day-to-Day Responsibilities: Contribute to backend development and API design using TypeScript Work on system integrations using n8n and other tools Collaborate on migrating More ❯

JavaScript/TypeScript API Engineer Contract Length: 6 Months Location: Manchester (1 Day a week in Manchester City Centre Office) Rate: Outside IR35 £350 - £400 per day Immediate Start Join a fast-moving product consultancy delivering high-impact software for a broad mix of clients across a range of sectors. They're now looking for an experienced contractor to … support a critical project focused on API development and complex system integration. The Role: You'll be part of a small, highly cooperative engineering team working on a SaaS platform designed to streamline and automate operational workflows. The focus is on building out and refining backend APIs, integrating third-party services, and improving the overall scalability and reliability … of the system. Tech Stack: TypeScript & JavaScript Node.js with Express n8n (workflow and automation integrations) PostgreSQL Permit.io (RBAC and auth) API best practices (rate limiting, downstream HTTP integrations) GraphQL (mostly migrating from) Day-to-Day Responsibilities: Contribute to backend development and API design using TypeScript Work on system integrations using n8n and other tools Collaborate on migrating More ❯

Software Developer in Canterbury, Kent (office-based) Salary: £40,000 – £45,000 depending on experience Do you have skills in C#, JavaScript, and SQL? Do you enjoy API development—both writing and consuming—as part of a wider full-stack role? Would you like the opportunity to work in an office-based role where you can closely collaborate … a competitive edge in the telecom and energy sectors. As part of their expansion, they are now looking to onboard a Full Stack Developer to join their friendly, collaborative development team. You will have the chance to work across the full stack, with a particular focus on API development—both writing and consuming—and be involved in … the full software lifecycle, from design to delivery. What you will be doing: Designing and developing software applications using .NET and C# Contributing to both backend and frontend development Creating, consuming, and integrating APIs Collaborating with the team to add new features and fix bugs Staying current with new technologies and suggesting improvements Supporting clients and ensuring the successful More ❯

Role The DevOps Engineer will participate in the entire development lifecycle, including requirement analysis, system design, development, quality assurance, testing and deployment. Establish a digital environment and automate processes to minimize variation and ensure predictable high quality code and data. Ensure that high levels of automation are implemented and maintained across the teams. Hands on into daily work … relationships with global business users and other IT teams Profile The DevOps Engineer, experienced in Agile and DevOps methodologies. Experience with core Java, Spring and design patterns; Experience with API development and Microservice framework; Experience on continual integration framework Experience with Unix including ability to analyse log files; Experience with RDBMS database; Experience on automation testing framework, like More ❯

applications. You will work closely with our cross-functional teams, including designers and Producers, to deliver high-quality, user-centric software solutions. Key Responsibilities: Front-end and Back-end Development: Develop and maintain both the front-end and back-end components of web applications using Ruby on Rails, React JS, Docker. It would be advantageous if you had experience … with JavaScript, HTML, JSON:API and CSS. Database Management: Design and optimise database schemas, write efficient queries, and ensure data integrity. Collaboration: Collaborate with designers and product managers to translate UI/UX design wireframes into functional web applications. Code Quality: Write clean, maintainable, and efficient code while following best practices and coding standards. Testing and Debugging: Conduct thorough … of the applications. Scalability: Design and develop scalable and high-performance web applications to handle increasing traffic and user loads. Documentation: Create and maintain documentation for code, APIs, and development processes. Continuous Learning: Stay up-to-date with the latest web development trends and technologies, and apply them to improve our applications. Requirements & Qualifications: 3-5 years of More ❯

worked with this company for several years, and it offers a fantastic opportunity to join a great team. The role involves working on both front-end and back-end development: React.js TypeScript Python Django API Development AWS Nice to have: This role involves a 2-stage interview process: a 30-minute call with the CTO, followed by More ❯

scripting with Python and Shell for data management tasks Experience with VMware Virtualization Hypervisor Knowledge of networking, TCP/IP, port management, and firewalls Experience with Mulesoft and Postman Development of APIs and integration with Ansible playbooks Technical Skills Proficiency in Windows OS and Microsoft Cluster environments Experience with DevOps tools: Ansible, Jenkins, Puppet Scripting skills in Python and … Shell Experience with VMware Hypervisor Networking knowledge: TCP/IP, port management, firewalls Mulesoft and Postman experience API development and integration Detailed Job Description Role: Senior Technical Engineer Extensive experience with Microsoft Windows in regulated financial organizations Interaction with application and infrastructure teams Understanding of functional and business requirements Problem identification and resolution Participation in stakeholder calls Analytical More ❯

have worked with this company for years, and it's a fantastic opportunity to join a great team! The role involves working on both front-end and back-end development, using technologies such as: React.js TypeScript Python Django API Development AWS Nice to have: Experience in these areas is a plus. This is a 2-stage interview More ❯

ll bring: Extensive experience with PHP and the Laravel framework . A strong understanding of object-oriented programming (OOP) principles. Proficiency with database technologies (e.g., MySQL). Experience with API development and integration. Knowledge of version control systems (e.g., Git). A problem-solving mindset and the ability to work independently and as part of a team. Excellent … a large user base. A hybrid working model offering excellent flexibility with a bias towards being home-based A collaborative and supportive team environment. Opportunities for professional growth and development . A competitive salary and benefits package. You must have full eligibility to work in the UK, as they are unfortunately unable to provide work permit sponsorship. If you More ❯