1 to 25 of 39 Permanent RESTful Jobs in the City of London

Lambda functions Experience working with Contentful CMS (content modelling, delivery APIs) Familiarity with infrastructure as code Testing experience with Jest and Playwright Understanding of RESTful APIs and microservices principles Comfortable working in an Agile, DevOps environment Proficient with Git and CI/CD pipelines (GitLab preferred) Solid knowledge of HTML ...

using TypeScript Build high-quality, responsive, and visually polished UI components Translate UI/UX designs into functional and engaging interfaces Design and develop RESTful APIs and backend services Implement and maintain CI/CD pipelines for efficient and reliable deployments Work across both frontend and backend systems to deliver ...

architecture and cross‐service design decisions Strong understanding of security, authentication flows, and data protection in distributed systems API & Data Design and governance of RESTful APIs, JSON, and HTTP standards API versioning and backward‐compatibility strategies MongoDB/NoSQL expertise, including: Data modeling Indexing strategies Performance optimization Advanced experience with ...

speed, and overall platform performance. Key Responsibilities Design, develop, and maintain scalable full stack applications using modern programming languages and frameworks. Develop and integrate RESTful APIs and microservices to support distributed cloud architectures. Work within cloud-native environments , primarily using Google Cloud Platform (GCP) . Collaborate with DevOps teams ...

/NoSQL databases. Proven experience working in fast-paced environments, ideally within trading, financial services, or high-frequency environments. Proficiency in developing RESTful APIs, microservices, and working with cloud-based architectures (AWS, GCP, or similar). Expertise in testing frameworks, CI/CD, and containerization technologies such as Docker ...

hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java and SpringBoot. Build and maintain RESTful APIs and microservices that power secure payment workflows. Work with XML-based messaging standards and protocols commonly used in financial transactions. Deploy, monitor, and scale applications ...

applications using Node.js and backend technologies. Strong proficiency in JavaScript/TypeScript and backend frameworks like Express.js . Familiarity with designing and working with RESTful APIs and microservices architecture. Experience with database technologies like MongoDB , PostgreSQL , and MySQL . Experience working with cloud platforms (e.g., AWS , Azure , or GCP ). ...

Experience designing and maintaining scalable frontend architectures in complex applications. Solid understanding of state management, component architecture, and performance optimisation techniques. Experience integrating with RESTful APIs and/or GraphQL. Experience implementing testing strategies (e.g., Jest, React Testing Library, Cypress or similar). Familiarity with CI/CD pipelines ...

code (C#, TypeScript) to ensure best practice, security and performance. Define and deliver test strategies for enterprise clients. Perform API and integration testing across RESTful services and microservices. Requirements: Strong understanding of the SDLC and modern engineering practices. Hands-on experience with Angular 18+ and .NET 8 (ASP.NET Core ...

HTML5 , CSS3 , and modern JavaScript (ES6+). Proven experience with state‐management libraries (e.g., Redux, Zustand). Solid experience integrating front‐end apps with RESTful APIs, (GraphQL is a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ...

Essential 5+ years of professional software engineering experience Strong proficiency in Go, with deep understanding of concurrency, error handling, and idiomatic patterns Experience building RESTful or gRPC APIs Solid understanding of databases, with MongoDB experience highly valued Experience with micro-services architecture and distributed systems Familiarity with containerisation (Docker ...

open-source data infrastructure, building pipelines and tools that the broader development data community can use and extend. Designing APIs for data access, including RESTful APIs and an MCP server to provide programmatic access to our data. Coordinating with specialist partners and external data engineering service providers for deep domain ...

grow. Key responsibilities: Build and maintain server-side logic using modern backend frameworks (e.g. Node.js, Python, Go) Work with APIs — designing, integrating, and maintaining RESTful endpoints Support database design and optimisation (e.g. PostgreSQL, MongoDB) Collaborate with front-end and product teams to deliver full-stack features Write clean, testable ...

them into robust, production-ready solutions. What you’ll be doing Designing and maintaining backend services primarily in Python Developing and evolving well-structured RESTful APIs Designing and improving data models across relational (e.g. PostgreSQL) and NoSQL databases Working across the stack where needed, including JavaScript, modern HTML/ ...

Rails architecture Extensive experience with PostgreSQL, including performance tuning and complex queries. Experience with background job processing using Sidekiq and Redis. Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO). Hands-on experience with AWS services and containerised deployments (Docker). Experience troubleshooting and supporting ...

2.0, and OpenID Connect Directory & Integration Management Configure and integrate LDAP/Active Directory Build integrations for web, mobile, API, and SaaS applications using RESTful APIs Essential Skills & Experience IAM Expertise Strong hands-on experience with PingOne AIC Deep understanding of SSO and federation protocols (SAML, OAuth 2.0, OIDC) Technical ...

years' experience in backend software development within a fast-paced, agile environment. Strong proficiency in Python (or similar modern backend language) and experience building RESTful APIs or microservices. Solid understanding of data structures, algorithms, and software design principles. Experience with cloud-based infrastructure (Google Cloud, AWS, or Azure) Passion ...

functional teams to deliver enterprise‐grade solutions. Key responsibilities: Design, develop and maintain backend services and APIs using Scala and Play Framework . Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. Write well-structured, idiomatic Scala and use functional programming patterns where appropriate. Build ...

best practices Contribute to performance optimisation and secure coding standards Requirements Strong experience with React and/or React Native Experience with GraphQL and RESTful APIs Solid understanding of web fundamentals (DOM, CORS, browser storage, request/response lifecycle) Strong knowledge of mobile platforms, including native modules, app lifecycle, data ...

mastery of Angular and TypeScript . Architecture: Practical experience with Micro-frontends (MicroUI) and integrating with cloud-native (AWS) environments. Data: Expertise in consuming RESTful/event-driven APIs and managing complex, real-time data states (RxJS/NgRx). Quality: Strong advocate for WCAG accessibility, performance optimization, and robust ...

processing. Strong skills in mainframe transaction management, JCL, and system debugging tools. Familiarity with SOAP, WSDL, JSON, and integration patterns such as SOA and RESTful APIs. Good working knowledge of AWS services, particularly CloudWatch, DynamoDB, and Lambda, including monitoring, troubleshooting, and optimisation. Excellent verbal and written communication skills to effectively ...

product with real momentum Technical skills required: Strong TypeScript across both frontend and backend (Node.js) Modern frontend framework experience (React or similar) RESTful and/or GraphQL API design and development Database design and querying (SQL and/or NoSQL) Experience in regulated or data-sensitive industries a strong advantage ...

reliability, scalability, and maintainability You love to analyse and tackle complex problems with elegant solutions You have exposure in multithreading, web protocol (e.g. websocket, RESTful), or high throughput/low latency design is a plus You have experience in mentoring and guiding team members ...

.NET 10.0, C# 14 - Break Into Banking - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure, Angular 21, Vue.js, TypeScript, Multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0, Programmer, Full Stack Engineer, Architect, .NET Developer) Are you stuck in a catch 22 situation i.e. want … training will be provided to fill any gaps in your skill set): .NET 10.0, ASP.NET Core, C# 14, Azure, Angular 21, Vue.js, TypeScript, multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0, Solid, DRY, LINQ, Microservices, Agile and Azure SQL. No previous banking experience is required. This is a once ...

Developer, .NET 10.0 - Social Networking Site - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's largest social-networking web site and they have ambitions … training per year and exposure to cutting edge technologies such as: .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Azure, Bootstrap, Agile and MongoDB. Additionally you will follow an official structured career progression program. Location: London, UK/Remote Working Salary ...