226 to 250 of 1,016 API Development Jobs in the UK

automation capabilities that reduce overheads across delivery, product and operations teams Develop robust integrations, custom APIs, and maintain business-critical automated processes Provide strategic guidance, frameworks, and standards for development and automation solutions Stay abreast of emerging technologies and tools, introducing innovations that enhance operational performance Collaborate with stakeholders across all levels, translating technical concepts into business-friendly language … control and CI/CD tools (Git, Azure DevOps, GitHub/GitLab) Skilled in multiple programming languages, ideally including: .Net (C#) PowerShell T-SQL Deep understanding of the software development lifecycle and Agile methodologies Proven experience in DevOps/SRE practices, CI/CD pipelines and Infrastructure as Code (Terraform, Bicep, ARM) Solid understanding of API development More ❯

contribute to the evolution of our core B2B ordering platform and play a key role in the transition to a next-generation digital ordering experience. Reporting to the Software Development Manager, you will help us improve our front-end applications to drive productivity and efficiency within our business, and most importantly, delight our customers. As a highly motivated developer … the digital products team, you will be the front-end expert, vital to sprint velocity, stand-ups, estimations, and retrospectives. You will be critical to all stages of software development, from architecture design and performance evaluation to build and deployment pipeline creation, and application monitoring. Our core stack includes: Backend: C#/.Net/SQL Server/RESTful APIs … Tools: LaunchDarkly, Grafana, GitHub Advanced Security, GitHub Copilot, Pluralsight CI/CD: Azure DevOps, GitHub Actions Infrastructure: Azure, App Service, Cloudflare Frontend: Angular, React, Flutter We use modern software development practices including CI/CD and feature flagging, and are always looking to improve delivery through automation and collaboration. Who we are: apetito is the UK's leading food More ❯

should demonstrate energy, passion, and a “can-do” attitude, along with excellent engagement and communication skills. Key Responsibilities Develop and maintain web applications with a focus on back-end development best practices. Collaborate with front-end developers to integrate UI components with APIs and databases. Gather and refine specifications and requirements based on technical needs or UX design. Debug … Node.js. Experience with frameworks such as Django, Spring Boot, or Express.js. Familiarity with database systems, including relational databases (e.g., MySQL, PostgreSQL) and NoSQL databases (e.g., MongoDB). Understanding of API design and development, including RESTful principles. Knowledge of version control systems (e.g., Git). Familiarity with cloud platforms such as AWS, Azure, or Google Cloud. Familiarity with containerization … technologies like Docker. Working knowledge of SEO principles. Familiarity with Agile development methodologies. Expertise and experience in implementing AI tools. Nice to Have Proficiency in Polish language for effective communication. Previous experience in mentoring. Benefits Flexible Working Hours: Value-driven, not 9-5. Remote Work: Work from anywhere with flexible hours. Competitive Salary: Adjusted based on your region. More ❯

seeking a Senior Java Developer/Lead who could drive technology transformation in the team. This role involves taking ownership of key projects and components throughout the entire Software Development Life Cycle (SDLC). A primary focus will be on design, development & maintenance of components under Price Master Central systems which would require expertise in Java, Spring, SQL … API development, Kafka, Kubernetes, and Cloud technologies. You will guide & mentor team of engineers, providing technical expertise and direction, and ensure adherence to best practices. A strong understanding of system and enterprise architecture is essential. You will collaborate with global and diverse teams, including Business Analysts, Project Management, Production Support, and Infrastructure. Price Master Central is a global … management application - responsible for sourcing Securities & Pricing data from market vendors and internal Citi sources and providing it to downstream clients after applying client specific rules. Responsibilities : Deliver assigned development projects within agreed schedule, quality and scope expectations Participate in all stages of the SDLC within an agile Scrum environment Form partnership with technology vendors and gain deep understanding More ❯

contribute to the evolution of our core B2B ordering platform and play a key role in the transition to a next-generation digital ordering experience. Reporting to the Software Development Manager you will help us improve our front-end applications to help drive productivity and efficiency within our business, and most importantly delight our customers. As a highly motivated … on Azure. You will be responsible for contributing to sprint velocity, stand up, estimations, and retrospectives. At a wider level, you will be involved in all stages of software development from architecture design, performance evaluation, to build and deployment pipeline creation, and application monitoring. About Our Stack To give you a flavour of some of the things you can … expect to work with, our core stack is outlined below. However, we are constantly learning and, where appropriate, incorporating the latest technologies in our projects. We use modern software development practices including CI/CD and feature flagging, and are always looking to improve delivery of our software through automation, and collaboration with other areas of IT. Backend: C# More ❯

Studio product, an advanced Digital Asset Management and photo automation solution, and have the opportunity to work on both frontend and backend. You will be involved in the entire development lifecycle, from design and analysis to development and testing of new features. The ideal candidate will be eager to join a fast-paced, dynamic environment where every employee … for an experienced Software Engineer who is now looking to embark on a new challenge with an amazing team of engineers. Ideally you are someone who has: Strong frontend development experience building beautiful UIs using React Backend API development experience in Node.js and be comfortable with modern JavaScript/TypeScript Experience with SQL and NoSQL databases Experience More ❯

with a high level of technical expertise to join our empowered and trusted team. You’ll be working with cutting-edge technologies and driving innovation through deep architectural and development work. Our team values autonomy, flexibility, and a high bar for excellence—so we need someone who is excited about taking on challenges and pushing their technical limits. This … adapt to changing requirements, and contribute to the evolution of our entire tech stack while maintaining a high standard of code quality. What You'll Do: Technical Leadership: Drive development using C#, ASP.NET Core, TypeScript, Vue.js, and other technologies. Own architectural decisions, contribute to product innovation, and ensure the highest levels of code quality through best practices and thorough … wide, high-profile projects that have immediate business impact. Dive deep into emergency-like situations where your technical expertise is crucial for fast decision-making and delivery. Full-Stack Development: Be a key player in building both front-end and back-end systems with expertise in full-stack development, including advanced data visualization tools, AI-enhanced user experiences More ❯

SÜD Group Future in your hands Want to view other available job postings? Bachelor's degree in Computer Science or equivalent experience. C#/.NET: Extensive experience in C# development, including strong understanding of object-oriented principles, asynchronous programming, and .NET framework/Core. Blazor: Proven experience developing web applications using Blazor and related technologies. Telerik Components: Demonstrable experience … using Telerik UI components. Python: Solid understanding of Python and experience developing serverless functions using Azure Functions. REST API Development: Proficiency in designing and implementing RESTful APIs using C# and .NET. Azure DevOps: Hands-on experience with Azure DevOps. Software Development Lifecycle (SDLC): Understanding of agile methodologies. Problem-Solving Skills: Excellent analytical and problem-solving skills. Communication … you could also be entitled to other benefits e.g. a Company Car or Car Allowance, Private Medical Insurance or a Relocation Package. We are dedicated to your growth and development Our training programmes, mentorship, exchange programmes and funding for professional membership subscriptions, courses and certifications aim to support your career advancement. Our global footprint also means: Short-term secondment More ❯

our employees to get involved in decision making as we continue to grow and scale. We give all our employees share options so they participate in the growth and development of the business. We offer a combination of remote and office (London based) working, weekly team lunches and plenty of office snacks! For more information, please visit our website … edge data visualization projects, leveraging modern technologies and large-scale datasets. You'll be part of a dynamic team that values innovation, learning, and collaboration. Required Skills & Experience Web Development: Proficient in React and TypeScript. Data Visualization: Experience with libraries such as Highcharts and D3.js. Testing: Familiarity with Jest and Playwright or similar testing frameworks. REST APIs: Strong understanding … analytics projects. Experience with data engineering tools (DuckDB, PySpark, etc.). Knowledge of automated testing frameworks (Playwright, Cypress). Experience of WebAssembly. Python programming experience for data manipulation or API development. Use of AI for creating visualisations. Soft Skills: Exceptional leadership skills with the ability to lead a team of software developers effectively. Excellent problem-solving skills and ability More ❯

improve the platform’s architecture and its associated services and databases Develop data visualization approaches for multimodal biomedical data, with a focus on pathway and network visualization Own the development of the Syntensor user-facing app, a large React application Architect and develop the app backend, presently developed with Node.js on AWS Define and build strong foundations to your … authorization and related security practices Experience designing data schemas and managing relation and non-relational databases (we use MySQL and ElasticSearch) Working knowledge of Python for data processing and API development Good knowledge of CSS and responsive design (we use CSS modules) Experience architecting and maintaining cloud infrastructure (we use AWS) Experience with Git, Docker and CI/… work?" Every modernized field of engineering has a systems simulator to test complex interactions in bits rather than atoms. This doesn’t yet exist for biology. Without one, drug development is expensive because risk of failure is very high; 30-60% of prescribed medicines have no clinical benefit to patients and adverse reaction to treatment is the 4th leading More ❯

deliver great payment experiences, including data sources (SQL or NoSQL), messaging systems and APIs; other duties as assigned. What You'll Bring To Circle 6 years minimum professional software development experience in object oriented languages like Java and Go Bachelor's degree in Computer Science or a closely related field (or equivalent). Led teams (2-4) technically on … architecture and system design. Experience working with payment systems like credit cards and bank transfers. A broad understanding of RESTful API design and development principles. Experience with Cloud Services (AWS, Google Cloud, Microsoft Azure, etc). Experience with SQL databases and designing schemas. Proven experience in the design & deployment of production-quality, scalable software. A focus on coding More ❯

API Developer (SC Cleared) Location: Remote (with occasional on-site visits as required) Work Pattern: Full-time, permanent or contract Security Clearance: Must hold active SC Clearance The Company At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises empowering autonomy, promoting experimentation, and facilitating rapid learning to provide exceptional value to our clients. … minimise risk and shorten delivery times. Our team consists of highly skilled cross-functional consultants, analysts, and support staff. About the Role We are seeking an experienced SC Cleared API Developer with expertise in designing, developing, and maintaining scalable and secure APIs. The ideal candidate will be responsible for defining API specifications, integrating APIs with various services, and … ensuring high availability and performance. This role requires strong experience in API security, containerisation, and Agile methodologies. Roles and Responsibilities Design, develop, and maintain high-quality API services, primarily HTTP REST-based. Define API specifications using OpenAPI and other industry standards. Develop APIs to meet non-functional requirements such as performance, scalability, and reliability. Integrate APIs with More ❯

We are seeking a WebMethods Architect with extensive experience in WebMethods upgrades, migration, and architecture design . The ideal candidate will have deep expertise in WebMethods Integration Suite , API Gateway, and hybrid cloud integration, along with hands-on experience in modernizing existing WebMethods platforms. Key Responsibilities: Lead the upgrade and migration of WebMethods Integration Suite from older versions to … analysis of WebMethods upgrades, ensuring smooth transition and minimal downtime. Architect and implement hybrid integration solutions using WebMethods and cloud- technologies (AWS/Azure/GCP). Oversee the development and deployment of Integration Services, API Gateway policies, and EDI/B2B solutions . Provide technical leadership and mentor development teams in best practices for WebMethods development … Optimize WebMethods configurations for high availability, scalability, and reliability. Ensure compliance with SOA, security policies, and governance standards . Required Skills & Experience: 10+ years of experience in WebMethods integration, API Gateway, and B2B solutions. Hands-on experience with WebMethods Upgrade projects (version 9.x to 10.x or later). Strong knowledge of WebMethods Integration Server, API Gateway, Universal Messaging More ❯

Technical Lead – Java Spring Boot – Must have Mobile App Development/Modernisation Location: Hybrid, 1 day a week in London office A leading enterprise organisation that specialises in AI-First solutions is seeking a seasoned Technical Lead with deep expertise in Java Spring Boot, microservices architecture, and solution design to drive the backend engineering strategy for its platform engineering … function. The ideal candidate brings a blend of strong technical leadership, architectural insight, and hands-on development capability, alongside experience collaborating across cross-functional teams. This role involves leading the development of scalable, secure, and maintainable backend systems, especially those supporting mobile ecosystems. Prior experience in the banking or financial services domain is highly advantageous. Must have experience … with API gateways and mobile app development/modernisation Key Responsibilities: Design and develop high-performance, secure, and scalable backend systems using Java, Spring Boot, and modern architectural patterns. Lead the development of RESTful APIs and microservices, ensuring alignment with mobile platforms and business objectives. Integrate with API Gateway solutions (e.g., Kong, Apigee, AWS API More ❯

Technical Lead – Java Spring Boot – Must have Mobile App Development/Modernisation Location: Hybrid, 1 day a week in London office A leading enterprise organisation that specialises in AI-First solutions is seeking a seasoned Technical Lead with deep expertise in Java Spring Boot, microservices architecture, and solution design to drive the backend engineering strategy for its platform engineering … function. The ideal candidate brings a blend of strong technical leadership, architectural insight, and hands-on development capability, alongside experience collaborating across cross-functional teams. This role involves leading the development of scalable, secure, and maintainable backend systems, especially those supporting mobile ecosystems. Prior experience in the banking or financial services domain is highly advantageous. Must have experience … with API gateways and mobile app development/modernisation Key Responsibilities: Design and develop high-performance, secure, and scalable backend systems using Java, Spring Boot, and modern architectural patterns. Lead the development of RESTful APIs and microservices, ensuring alignment with mobile platforms and business objectives. Integrate with API Gateway solutions (e.g., Kong, Apigee, AWS API More ❯

Kingdom Description We are seeking a WebMethods Architect with extensive experience in WebMethods upgrades, migration, and architecture design. The ideal candidate will have deep expertise in WebMethods Integration Suite, API Gateway, and hybrid cloud integration, along with hands-on experience in modernizing existing WebMethods platforms. Key Responsibilities: Lead the upgrade and migration of WebMethods Integration Suite from older versions … of WebMethods upgrades, ensuring smooth transition and minimal downtime. Architect and implement hybrid integration solutions using WebMethods and cloud-native technologies (AWS/Azure/GCP). Oversee the development and deployment of Integration Services, API Gateway policies, and EDI/B2B solutions. Provide technical leadership and mentor development teams in best practices for WebMethods development … teams. Optimize WebMethods configurations for high availability, scalability, and reliability. Ensure compliance with SOA, security policies, and governance standards. Required Skills & Experience: 10+ years of experience in WebMethods integration, API Gateway, and B2B solutions. Hands-on experience with WebMethods Upgrade projects (version 9.x to 10.x or later). Strong knowledge of WebMethods Integration Server, API Gateway, Universal Messaging More ❯

clean, modern C# code. What you'll be working with: We're looking for developers with solid core engineering skills and a strong background in modern C# and .NET development , including: Core C# & .NET Skills Hands-on experience with C# (latest versions preferred) Deep knowledge of .NET Core/.NET 6/7/8 for building scalable APIs … Strong grasp of OOP principles and design patterns API Development Building and maintaining RESTful APIs Solid understanding of HTTP protocols, status codes, headers, etc. API documentation using tools like Swagger/OpenAPI Legacy Systems Exposure to or experience with WCF services - we still support some older systems, so comfort working with a mix of modern and legacy … tech is key DTOs and model binding Security API authentication and authorization best practices Knowledge of OAuth2, JWT, OpenID Connect Secure coding practices for exposed endpoints Integration & Communication Consuming third-party APIs (REST/SOAP) Async/await, tasks, and non-blocking design Database Integration Hands-on with Entity Framework Core or similar ORM Confident writing SQL and working More ❯

Mentor junior team members and uphold engineering best practices Drive technical decisions that align with business goals Extend our AI functionalities What We Look For Essential Technical Skills: Frontend Development: Advanced expertise with React (18+) and TypeScript Deep knowledge of Next.js (14+) and its features (SSR, ISR, API routes) Experience with Mantine UI framework or similar component libraries … Proficiency with CSS-in-JS solutions like Vanilla Extract Strong understanding of data visualisation using libraries like Visx and Recharts Knowledge of Zod for runtime type validation Backend Development: Strong Node.js experience Experience with tRPC for type-safe API development Database expertise with PostgreSQL and SQL query builders (Kysely) Knowledge of authentication systems (NextAuth) Full-Stack Capabilities … Type-safe development across the entire stack API design and implementation Performance optimisation techniques State management using React Query Testing & Quality: Comprehensive testing strategies with Jest and Playwright Experience with mock service workers (MSW) for API testing DevOps & Deployment: CI/CD pipeline configuration and optimisation Environment management and deployment strategies Experience with package managers like pnpm More ❯

rebuild their software environment. This role is central to developing web-based applications and systems that support strategic business goals. The ideal candidate is highly skilled in Azure cloud development, experienced in Agile and DevOps environments, and capable of leading development teams. Duties and Responsibilities: Software development, evaluating and improving codebases. Implement long-term development strategies … with incremental improvements. Lead and mentor software engineers to enhance performance. Refine development processes, tools, and standards for efficiency and quality. Manage competing priorities and make decisions under pressure. Collaborate with technical and non-technical stakeholders. Stay updated on industry standards, including version control, code reviews, testing, and CI/CD. Apply Agile methodologies in development practices. Required … Skills: Extensive software development experience with a proven record of improving codebases. Skilled in C#, .NET, Azure, and SQL. Strong background in API development and provider application implementation. Capable of shaping long-term strategies while managing incremental improvements. Proven leader with experience mentoring teams and driving performance. Experienced in optimising development tools, processes, and standards. Strong More ❯

Microsoft 365, including SharePoint, Teams, Power Apps, Power Automate, and related applications. Design and manage integrations between Microsoft 365 applications and third party systems using REST APIs, Microsoft Graph API, and custom connectors. Create and manage custom connectors within Power Automate and Power Apps to facilitate efficient data flow across multiple platforms. Collaborate with stakeholders and the Business Excellence … a Microsoft 365 Developer or a similar role focused on integrations. In depth knowledge of Microsoft 365 applications (SharePoint, Teams, Power Apps, Power Automate) and services. Extensive experience with API integrations, particularly Microsoft Graph API, REST APIs, and third party APIs. Strong proficiency in Power Platform development, including Power Apps and Power Automate custom solutions. Knowledge of … Azure services (Logic Apps, Functions, and API Management) for advanced integration capabilities. Familiarity with JSON, XML, OAuth, and other web technologies relevant to API development. Experience of JavaScript, C#, or PowerShell for custom solution development within the Microsoft ecosystem. Strong problem solving skills and a proactive approach to troubleshooting integration issues. Excellent communication skills for collaborating with More ❯

clean, modern C# code. What you’ll be working with: We’re looking for developers with solid core engineering skills and a strong background in modern C# and .NET development , including: Core C# & .NET Skills Hands-on experience with C# (latest versions preferred) Deep knowledge of .NET Core/.NET 6/7/8 for building scalable APIs … Strong grasp of OOP principles and design patterns API Development Building and maintaining RESTful APIs Solid understanding of HTTP protocols, status codes, headers, etc. API documentation using tools like Swagger/OpenAPI Legacy Systems Exposure to or experience with WCF services — we still support some older systems, so comfort working with a mix of modern and legacy … tech is key Data Handling JSON serialization/deserialization DTOs and model binding Security API authentication and authorization best practices Knowledge of OAuth2, JWT, OpenID Connect Secure coding practices for exposed endpoints Integration & Communication Consuming third-party APIs (REST/SOAP) Async/await, tasks, and non-blocking design Database Integration Hands-on with Entity Framework Core or similar More ❯

clean, modern C# code. What you’ll be working with: We’re looking for developers with solid core engineering skills and a strong background in modern C# and .NET development , including: Core C# & .NET Skills Hands-on experience with C# (latest versions preferred) Deep knowledge of .NET Core/.NET 6/7/8 for building scalable APIs … Strong grasp of OOP principles and design patterns API Development Building and maintaining RESTful APIs Solid understanding of HTTP protocols, status codes, headers, etc. API documentation using tools like Swagger/OpenAPI Legacy Systems Exposure to or experience with WCF services — we still support some older systems, so comfort working with a mix of modern and legacy … tech is key Data Handling JSON serialization/deserialization DTOs and model binding Security API authentication and authorization best practices Knowledge of OAuth2, JWT, OpenID Connect Secure coding practices for exposed endpoints Integration & Communication Consuming third-party APIs (REST/SOAP) Async/await, tasks, and non-blocking design Database Integration Hands-on with Entity Framework Core or similar More ❯

functional and compliance requirements, and solutions are well designed with maintainability/ease of integration and testing built-in from the outset. Job expectations include a strong knowledge of development and testing practices common to the industry and design and architectural patterns. Responsibilities: Codes solutions and unit test to deliver a requirement/story per the defined acceptance criteria … develops, and modifies architecture components, application interfaces, and solution enablers while ensuring principal architecture integrity is maintained Mentors other software engineers and coach team on Continuous Integration and Continuous Development (CI-CD) practices and automating tool stack Executes story refinement, definition of requirements, and estimating work necessary to realize a story through the delivery lifecycle Performs spike/proof … activities Designs, develops, and maintains automated test suites (integration, regression, performance) Position Summary .NET Software Engineer III is a member of the Wealth Management Shared Technology team and performs development and support of highly scalable, most resilient and reusable shared capabilities across enterprise. Additional responsibilities include: API/Webservice design and development formiddle-tiercapabilities,includingRedis in-memorydatabase More ❯

and secure applications. You should have at least two years of experience working with applications and APIs, along with a good understanding of both front-end and back-end development, ensuring seamless integration with existing systems and compliance with industry standards. Skills and experience Proficiency in application development: Working knowledge of MS Power Platform; knowledge of legal applications … such as Visualfiles, Intapp, etc.) is an advantage. Database management: Strong knowledge of SQL and Python. API development and integrations: Expertise in creating and consuming RESTful APIs, experience with SOAP services, and familiarity with Azure technologies (Azure Service Bus, Logic Apps, Function Apps, Power Automate) or Intapp technology (Integration Builder) is an advantage. Cloud technologies: Familiarity with Azure … and collaboration: Proficient with Git, GitHub, Azure DevOps, or similar tools for source control and team collaboration. Agile methodologies: Experience working in Agile/Scrum environments, focusing on iterative development and continuous improvement. Security best practices: Knowledge of secure coding practices and compliance with data protection regulations (GDPR, ISO 27001, CE+). Problem-solving and analytical skills: Ability to More ❯

including offshore teams and contractors. Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution across the development team. Experience: 4+ years … experience in software engineering, with a strong focus on Java development. Experience leading and/or mentoring technical teams within fast-paced, agile environments. Expertise in microservices architecture, REST API development, and security. Strong DevOps knowledge, particularly with Ansible or Jenkins pipelines. Proficiency in object-oriented design, relational databases, and MongoDB. Experience with version control (GIT preferred) and More ❯