1 to 25 of 61 API Development Jobs in the UK excluding London

Senior Developer, Back End, API, .Net SQL, NW London to £80K (office based role) A Senior Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed … required with expertise in .NET, C#/VB, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge of API security, CI/CD automation, and Swagger documentation is recommended. Responsibilities ...

SoftwareDeveloper(API Development/Backend Node.js, C#, Fullstack) Birmingham, West Midlands (Hybrid 1 day onsite a week) 55k + Benefits Were partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. Theyre looking for a Software Engineer with strong API and backend … development experience to work on complex, high-performing systems used by global clients. This Developer role offers the opportunity to build and enhance large-scale, data-driven applications with a focus on reliability, scalability, and performance. As a Software Engineer, youll take ownership of backend services and integrations, designing ...

Software Developer (API Development/Backend – Node.js, C#, Fullstack) Birmingham, West Midlands (Hybrid – 1 day onsite a week)55k + BenefitsWe’re partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. They’re looking for a Software Engineer with strong API … backend development experience to work on complex, high-performing systems used by global clients.This Developer role offers the opportunity to build and enhance large-scale, data-driven applications with a focus on reliability, scalability, and performance.As a Software Engineer, you’ll take ownership of backend services and integrations, designing ...

keeping SQL Server and Azure SQL performing well. Clean architecture, SOLID principles and writing testable, maintainable code matter here. As well as your own development work, you'll contribute to code reviews, help shape technical standards, provide some light-touch mentoring to less experienced developers and engage directly with … stakeholders. Not a management role - but you'll have influence. Key Experience: 5+ years commercial .NET development Strong ASP.NET Core including MVC and API development Experience building Android apps with .NET MAUI or Xamarin.Forms Good OOP and software design skills, comfortable thinking about architecture Solid Entity Framework ...

Role Title: API Security Architect Location: Knutsford/Hybrid Duration: 30/11/202 Role Description: "We are looking for an API Security Architect to define, design, and oversee the implementation of enterprise-grade API security architecture. The role ensures APIs are built securely, follow best … practice standards, and align with organisational security and compliance requirements. Key Responsibilities Design end-to-end API security architecture across cloud and on-premise environments. Define API security standards covering authentication, authorization, encryption, and threat protection. Lead architectural reviews, threat modelling, and risk assessments for API integrations. ...

with FastAPI). A product-first mindset is essential, ensuring the entire stack delivers reliable, high-quality experiences. Key Responsibilities End-to-End Feature Development Design, develop, and deploy features across the full technology stack Translate product requirements into scalable technical solutions Build systems from database schema to backend … services to frontend components Frontend Development & User Experience Develop high-performance, responsive interfaces using React and Next.js Optimize usability, performance, and responsiveness Implement polished UI elements including animations, accessibility improvements, and micro-interactions Collaborate with product and design stakeholders to deliver intuitive user journeys Backend Development & API ...

lead projects, mentor junior developers, and work on high-impact, secure banking solutions. You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment. This role is ideal for developers with strong technical expertise who are looking … portals using ASP.NET MVC/.NET Core Design and integrate REST APIs with internal and third-party services Implement secure authentication mechanisms (JWT, OAuth2, API Keys) Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations) Debug and trace request flows from UI Controller API Database ...

week from office) £57,000 – £64,000 DOE Join a team at the centre of a major digital transformation, where modern engineering, secure software development, and large-scale technical innovation drive everything forward. This role places you at the forefront of designing and delivering complex, high-impact digital solutions … with wider digital ambitions. Skills Strong expertise in HTML, CSS, JavaScript Advanced commercial experience with React Confidence designing scalable front-end architecture Experience with API integration, cloud platforms, and CI/CD workflows Writing unit tests Modern front end testing frameworks like Jest Ability to mentor colleagues and collaborate ...

role in developing a scalable, secure, and maintainable platform that integrates ecommerce, CRM, licensing, and other business-critical systems. This is a hands-on development role for a developer who thrives on complex, integrated systems, enjoys problem solving across the full stack, and wants to contribute to a mission … full-stack technologies. Develop new features and functionality for both front-end and back-end components in following best practices. Implement and maintain robust API integrations with internal and third-party systems. Assist in monitoring, troubleshooting, and resolving production issues to maintain system reliability and data integrity. Participate ...

design and build using the latest cloud technology.**What you’ll do...*** **Solution Design and System Integration:** Lead the design and development of robust software solutions using modern engineering techniques across GCP and Microsoft Azure stacks, aligned with Enterprise Architecture and Business Design strategy* **Thought Leadership:** A trusted advisor … solution governance across the Lab* **Delivering Design Outputs:** Such as Minimum Viable Designs and architecture decisions via formal governance processes* **Agile Methodologies:** Champion agile development practices, including continuous integration and test automation.**About you...**We're looking for an experienced individual who can thrive in a fast-paced environment ...

Java Developer - IAM/API Sheffield (1-2 days per month onsite) Inside IR35 We're supporting a leading financial services client in hiring a Java-focused Application Developer to build secure, scalable identity and access solutions within a modern cloud environment. This role centres on Java API … development, identity orchestration, and event-driven architectures, working closely with security and engineering teams to deliver robust IAM and data-driven solutions. Key Responsibilities Design and develop secure, scalable RESTful APIs (Java) supporting identity and access workflows Build and enhance identity lifecycle orchestration (provisioning, de-provisioning, access controls) Develop ...

collaborative team, solving complex technical challenges and shaping the technical direction of our cross-platform SDKs, with a focus on Web & Mobile. Cross-platform development requires engineers who are comfortable working across languages and ecosystems. Success in this role comes from agency in your curiosity, strong problem-solving instincts … proven ability to understand and develop complex systems. At Invertase, engineers work with modern development workflows and emerging technologies, including AI-assisted tooling. We value engineers who are curious about new technologies and actively explore new tools as part of their development workflow. Much of our work also ...

water-quality monitoring equipment used by water utilities and industrial customers to prevent flooding, reduce pollution, and improve environmental compliance Job Description Software Development Lead Hybrid with Travel to Nelson Permanent, full-time Competitive salary, Bonus plus benefits We are seeking an experiencedSoftware Development Lead with deep expertise … systems, cloud-native development on AWS, data ingestion pipelines, and API development. You will design and build the backend services that support our connected IoT devices-managing secure device communication, high-volume data ingress, and the APIs that power our applications and customer experiences. This role is ideal ...

procedures and to modernise systems and practices so that they can deliver quality at pace. Currently the team are transitioning from traditional software application development using C#, Blazor and SQL Server integrating with Dynamics Business Central, and the Data team provide analytics and insights using SAS, MicroStrategy and Power … Engineers, an Automation Tester, Scrum Master, DevOps, Infra Engineers and Service Desk Team. You need to have experience of leading end to end software development including design, build, testing, deployment and support. The Service Desk team need to work closely with the build and deployment resources so that they ...

Centre Salary - £50-60k + Excellent Benefits A leading enterprise software house is seeking an experienced Full Stack Developer to join its Birmingham development team. This hybrid role offers a great balance of flexibility and collaboration. The Software Developer will design, develop, and deliver scalable, high-performance applications … used by engineers and transport organisations across the globe. Key Requirements for this Full stack Developer: 5+ years experience with Node.js, & React Strong REST API development skills Solid current experience with C# in enterprise environments Knowledge of CI/CD, cloud infrastructure, and Azure DevOps Experience withCypress Testing ...

between flexibility and collaboration, with 1-2 days a week spent onsite. As a Senior Developer, youll play a key role in the design, development, and delivery of scalable, high-performance software solutions. Youll work across the full stack, focusing on Node.js and React, while collaborating closely with other … Experience 5+ years commercial experience with TypeScript/React and Node.js. Proficiency in JavaScript libraries such as React or Next.js. Expert knowledge of REST API development using Node.js. Experience working with C# in enterprise environments. Familiarity with cloud computing, infrastructure as code, and CI/CD pipelines. Experience ...

excellent communication & time management skills. Tech stack AWS/GCP Python - Preferred Docker Preferred or Kurbenetes SQL/PostgreSQL Git Nginx Flask or Fast API CI/CD, API development & Management, NLP, Machine Learning Experience and skills 5+ years of commercial experience as a Data Scientist building … requirements. Benefits There are significant opportunities for progression and pay increases throughout the year, depending on performance, contribution and impact. Learning and development opportunities, where relevance is evidenced, can be paid for by the company. 25 days holiday + bank holidays. Company-wide bonuses should commercial targets be hit. ...

modernising its technology platforms and adopting agile, cloud-native solutions. We are seeking a Tech Lead to help drive this transformation and lead the development of scalable, secure, and high-performing systems. About the Role You will be responsible for the technical leadership of a cross-functional agile team. … will guide software architectural decisions, contribute hands-on to development, mentor engineers, and ensure the delivery of robust software aligned with business objectives. Responsibilities Lead the design and development of enterprise-grade applications using Java and related technologies Define and enforce agreed coding standards, architectural principles, and engineering ...

excellent communication & time management skills. Tech stack: AWS/GCP Python - Preferred Docker Preferred or Kubernetes SQL/PostgreSQL Git Nginx Flask or Fast API CI/CD, API development & Management, NLP, Machine Learning Experience & skills: 5+ years of commercial experience as a Data Scientist with current ...

technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL … testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. ...

shape engineering standards, influence architectural direction, and remain actively engaged in production-level code. Expect an approximate 70/30 split between hands-on development and leadership responsibilities, flexing according to project phase and delivery requirements. You will work across: Bespoke web platforms and business-critical applications Mobile applications … built with React Native API integrations and backend systems A combination of greenfield builds and scalable legacy platforms This is a dynamic agency environment. Projects vary in scope and sector, and context switching is part of the role. Delivery methodologies include Scrum and Kanban, with two-week sprints typical. ...

technical direction within your team Required Skills and Experience Full-stack experience across a selection of JavaScript frameworks (React, NextJS), TypeScript, Python, Java REST API development & OpenAPI/Swagger Cloud services (AWS or Azure) Containerisation & Orchestration (Docker, Kubernetes, OpenShift) Infrastructure as Code (Terraform, Ansible) Relational Databases (e.g. PostgreSQL … testing frameworks (e.g. Mocha, Jest, Cypress) We appreciate you may not be an expert in every area above - we can support with training and development in some areas! Please do make an application and we will identify where we can best support your growth specific to your application. ...

pipelines and cloud deployments, and ensuring quality through automated testing. Key Requirements: 5+ years experience with Node.js, React/Next.js, and TypeScript Strong REST API development skills Solid current experience with C# in enterprise environments Knowledge of CI/CD, cloud infrastructure, and Azure DevOps Experience withCypress Testing … enterprise applications. Erin Associates Ltd acts as an Employment Agency for this vacancy. Keywords: Senior Software Engineer, Fullstack Developer, Node.js, React, TypeScript, C#, REST API, NextJS, , CI/CD, Azure DevOPs, Birmingham, West Midlands, Full Stack Engineer, Software Developer Erin Associates Ltd is acting as an Employment Agency ...

recruitment-fraud-alert/Role-Java Angular Developer Location: Manchester, UK Mode : Hybrid Contract inside IR 35 JD for your reference: Key Responsibilities EndtoEnd Development Design develop test deploy and maintain web applications from UI to database FrontEnd Create user interfaces and layouts using HTML CSS JavaScript and modern … developers in an Agile environment Essential Skills Qualifications Core Languages Java JavaScript HTML CSS Frameworks Spring Spring Boot FrontEnd React Angular Vue APIs RESTful API development and consumption Databases SQL MySQL PostgreSQL and NoSQL databases Tools Git Jira CICD tools Methodologies AgileScrum Soft Skills Problemsolving communication teamwork attention ...

looking for a Senior Software Engineer with proficiency in C# programming to lead the development of the IoT device software and cloud platform software for our connected energy storage systems. The successful candidate will be responsible for the development and maintenance of communications and cloud backend … work collaboratively to solve problems The Role We are looking for a Senior Software Engineer with proficiency in C# programming to lead the development of the IoT device software and cloud platform software for our connected energy storage systems. The successful candidate will be responsible for the development ...