1 to 25 of 71 Permanent API Development Jobs in the UK excluding London

designing, developing, and maintaining the backend services that manage multiple payment gateways, methods, and related functions. Your expertise in TypeScript/Node.js , backend development, and database integration is crucial for building efficient and secure payment processes. What You'll Be Doing (Key Responsibilities) Backend Development: Play … role in developing robust server-side applications and core payment flows. Take a direct part in the development of the front-end API Development: Design and optimize high-performing APIs. Database Management: Assist in designing and optimizing database schemas (relational and NoSQL). Code Quality: Execute thorough ...

Senior C# Developer - .NetCore, API, NuGet, ORM, Linq2DB Talented, Senior C# .NET Developer to work on a feature rich platform. Developing features modern .NET helping shape the future of sustainable transport. Participate in planning, architecture discussions, code reviews to ensure clean reliable code. Core Web API development … professional, highly talented SW dev team. Expertise in C# .NET. Experience of enhancing web and microservices systems, AWS, creating managnig internal NuGet packages. C# development .NET Core .Net Core Web API development ORM - Linq2DB, Entity framework .Net5 Docker, CI/CD Git Agile Coding and programming ...

efficient Google Cloud Infra, product and DevOps with cross-disciplinary feature team curating scalable GCP Cloud Products as IaaC and building APIGEE/API and modernizing APIGEE gateway. Key responsibilities: Hands-on development and management of Google Apigee API Management Platform . Design, build, and deploy API … proxies , policies, and configurations in Apigee. Implement CI/CD pipelines for API lifecycle management using tools like Jenkins, GitHub Actions, or Harness. Develop and maintain API security policies (OAuth, JWT, mTLS, rate limiting, threat protection). Automate Apigee deployments and configurations using Infrastructure as Code (IaC) principles. ...

experience of different types of architectures and understanding of the tradeoffs between them. In this role, you'll be a senior contributor to the development and operation of our cutting-edge cloud-based platform. You should have a passion for both science and engineering, a proven ability to deliver … contribute to our mission! Responsibilities: As a Safe Intelligence Full Stack Software Engineer, you will: Engineering of Golang-based backend systems, focusing on API development and integration. Engineering on our TypeScript-based frontend systems, primarily utilizing React to craft intuitive and highly functional user interfaces. Productize and enhance ...

currently seeking an experienced Senior Developer to join our established Client Digital Solutions team responsible for the development, implementation, and maintenance of software solutions across both our UK and NL services sectors and our wider international clients. As an experienced Senior Developer, you will become a key member … leading cloud based digital solutions to our clients. Your Responsibilities: Develop, deploy, test and support cloud applications. Working as part of a dedicated software development team, under the guidance of technical lead members on all aspects of the software development lifecycle Involvement in the development ...

currently seeking an experienced Senior Developer to join our established Client Digital Solutions team responsible for the development, implementation, and maintenance of software solutions across both our UK and NL services sectors and our wider international clients. As an experienced Senior Developer, you will become a key member … leading cloud based digital solutions to our clients. Your Responsibilities: Develop, deploy, test and support cloud applications. Working as part of a dedicated software development team, under the guidance of technical lead members on all aspects of the software development lifecycle Involvement in the development ...

Core Java, Spring Boot, and Microservices architecture Hands‐on experience with PEGA BPM PEGA certifications such as CSA or CSSA Expertise in REST API development, JSON/XML, and integration patterns Solid understanding of OOP, design patterns, and secure coding practices Experience working with SQL/NoSQL databases … PostgreSQL, Oracle) Nice‐to‐Have Skills Experience with cloud platforms (AWS, Azure, GCP) Containerization knowledge (Docker, Kubernetes) UI development in PEGA or frameworks like Angular/React Familiarity with DevOps tools (Jenkins, Git, SonarQube, CI/CD pipelines) Exposure to Agile environments and financial domain projects PEGA CSA/ ...

Core Java, Spring Boot, and Microservices architecture Hands‐on experience with PEGA BPM PEGA certifications such as CSA or CSSA Expertise in REST API development, JSON/XML, and integration patterns Solid understanding of OOP, design patterns, and secure coding practices Experience working with SQL/NoSQL databases … PostgreSQL, Oracle) Nice‐to‐Have Skills Experience with cloud platforms (AWS, Azure, GCP) Containerization knowledge (Docker, Kubernetes) UI development in PEGA or frameworks like Angular/React Familiarity with DevOps tools (Jenkins, Git, SonarQube, CI/CD pipelines) Exposure to Agile environments and financial domain projects PEGA CSA/ ...

works well on individual and team related projects, with previous DevOps experience as well as demonstrable experience in Backend technologies, including SQL Server, MySQL & API Development, experience with 3rd Party API Integrations & complex server-side logic as well as NodeJS frameworks including ReactJS, NextJS, NestJS etc. … will have commercial experience in Frontend Web development technologies, including HTML, CSS & JavaScript/Typescript as well in using Git or related technologies. Ideally you will have TDD or BDD development experience as well as an understanding of DevOps tools and practices for CI/CD You will ...

Salary up to £80,000 33 days annual leave Pension & healthcare A role with genuine social impact A supportive, mission-driven workplace Professional development and clear career progression Key Responsibilities Lead the design, development, and delivery of modern, web-based applications Improve codebases, development practices, and deployment … effective systems About You Extensive experience with C#, .NET, and SQL Strong expertise in Azure and Azure cloud adoption frameworks Proven track record in API development and modern system architectures At least 3 years’ experience in a leadership role Strong problem-solving skills and ability to perform under ...

candidates have led enhancements, maintenance, or improvements of existing systems. This position is especially suitable for those with hands-on experience in financial system development or financial IT consulting. Employment Type: Full-time, Permanent Salary: £50k-£65k depending on experience Start Date: Negotiable Working Hours: Monday to Friday … Server • Propose and implement improvements or new functionalities for existing systems • Coordinate with internal and external stakeholders Financial Systems Developer Ideal Candidate: • Development experience with C#.NET (3+ years preferred) • Experience with SQL and database operations • Knowledge of financial systems or financial operations (e.g., payments, settlements, reporting) is a plus ...

Strong hands-on experience with Google Apigee API Management. Expertise in CI/CD pipelines and DevOps practices for API deployments. Python Scripting for automation and workflow orchestration. Familiarity with Terraform/Terraform Cloud for IaC (good to have). Experience with Jenkins, GitHub, Harness for pipeline automation. … Knowledge of Google Kubernetes (GKE) and container orchestration. Understanding of API security standards and policy-as-code (OPA/Sentinel). GCP Certified (preferably Apigee Certified API Engineer). Good to have: Experience with IDE platforms for API development (eg, Backstage). ...

maintain world-class SDKs and developer tools. LOCATION Fully remote OPPORTUNITY We're seeking a passionate and skilled Software Engineer to contribute to the development of SDKs used by millions of developers worldwide. You'll be working with cutting-edge technologies, building the tools that empower developers to create … globe. If you're eager to learn, collaborate, and make a difference in the developer community, we encourage you to apply! Key Responsibilities SDK Development : Develop high-quality, well-documented SDKs using JavaScript/TypeScript (and potentially other languages), covering front-end, back-end, libraries, APIs, and tools. Code ...

applications. This is a highly collaborative role for someone with a passion for software craftsmanship and continuous improvement. Using your 5+ years of backend development experience, you'll enhance core product features, design scalable systems, and work closely with relevant stakeholders to deliver technical solutions that drive real value. … Beyond your individual contributions, you'll mentor junior developers, champion best practices, and drive meaningful improvements in our development processes and tools. This is an opportunity to make a real impact; both through the systems you build and the team culture you help shape. As a Senior Backend Developer ...

databases infrastructure capabilities work. • Expertise in infrastructure components, performance tuning, and capacity planning. • Understanding of, and hands on experience of, micro services, software development, infrastructure automation, api development and basic application system’s design. • Strong understanding experience on Site Reliability Engineering, DevOps Capabilities (CI/CD/ ...

provider is looking for a Full Stack Engineer (Web & Data) to join its growing Automation & Analytics team in London. This hybrid role blends web development with data engineering, offering exposure to everything from dynamic front‐end interfaces and API development to cloud‐based data pipelines and analytics … platforms. If you love combining creativity in web development with the logic and scalability of data engineering, this is your opportunity to grow in a cutting‐edge environment. What You'll Do Design, develop, and maintain end‐to‐end web applications—from intuitive front‐end interfaces to robust back ...

strong growth and ongoing investment in their technology, they're looking to add another talented Full-Stack .NET Developer to their agile development team. The Role You'll play a key role in designing and building scalable, secure, and high-quality software solutions. Working closely with Product Owners … fellow engineers, you'll contribute to all stages of development - from concept and design through to deployment and continuous improvement. Delivering high-quality, maintainable code that meets performance and security standards. Collaborating with designers, developers, and stakeholders in an agile team environment. Participating in sprint planning and design sessions ...

their search for a Senior Full Stack Developer to join their team on a permanent basis. The successful candidate will have strong full-stack development experience, including system integrations, and will be capable of designing, developing, and implementing technical solutions that enhance business processes. Key Skills & Experience Proven experience … full-stack development (Front End and Back End) Strong proficiency in JavaScript, React, Node.js, HTML, CSS, and SQL Experience with API development and cloud-based systems , preferably AWS (Lambda, S3, Redshift) Python programming experience Excellent analytical and problem-solving skills Strong communication and collaboration abilities Degree ...

develop new functionality and make non-functional improvements to our products and services. Understand business requirements and how they translate into technical design and development projects and tasks. Participate in architectural and design discussions and diagnose and troubleshoot complex technical issues Work with stakeholders to progress and report … projects and tasks Building Voice Agents: Developing and maintaining our Go-based Voice Agent API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers Tool Creation: Developing "Tools" (Function Calling) that allow LLMs to interact with ...

develop new functionality and make non-functional improvements to our products and services. Understand business requirements and how they translate into technical design and development projects and tasks. Participate in architectural and design discussions and diagnose and troubleshoot complex technical issues Work with stakeholders to progress and report … projects and tasks Building Voice Agents: Developing and maintaining our Go-based Voice Agent API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers Tool Creation: Developing "Tools" (Function Calling) that allow LLMs to interact with ...

refine existing applications to improve reliability and user experience - Collaborate with clinical, firmware and engineering teams to deliver user-centric solutions - Lead the development of new features and enhance existing functionality - Contribute to architectural decisions and help shape the broader technical strategy Requirements: - 5+ years of full-stack development … years working with React/Vue, Nuxt/Next, Node.js, TypeScript, PostgreSQL and Redis - 5+ years developing mobile applications using Ionic - Strong experience in API development, authentication and database design (DynamoDB and PostgreSQL) - Demonstrable technical excellence via public demos, project pages, open-source contributions, etc. - Strong problem-solving ...

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 Build and evolve backend services that support login, MFA, and client authentication Proficient with IaC, CI/CD (CloudFormation ...

their search for a Senior Full Stack Developer to join their team on a permanent basis. The successful candidate will have strong full-stack development experience, including system integrations, and will be capable of designing, developing, and implementing technical solutions that enhance business processes. Key Skills & Experience Proven experience … full-stack development (Front End and Back End) Strong proficiency in JavaScript, React, Node.js, HTML, CSS, and SQL Experience with API development and cloud-based systems , preferably AWS (Lambda, S3, Redshift) Python programming experience Excellent analytical and problem-solving skills Strong communication and collaboration abilities Degree ...

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 … 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. ...

basis. The successful candidate will work on an Electronic Trading Platform for the FIC business. This is an exciting opportunity to contribute to the development and integration of advanced trading technologies in a prestigious and fast-paced environment. Our client are in the process of a large multi year … Experience developing, maintaining, or supporting electronic foreign exchange (E-FX) trading platforms. Messaging Protocols: Familiarity with FIX protocol, MQ, JMS, or similar messaging solutions. API Development: Experience with RESTful and/or SOAP web services. Low Latency Programming: Understanding of techniques for minimizing latency in trading applications. Spring ...