independently, as well as in an Agile environment. Skills Required 15+ years of strong experience in full-stack software development. Backend: Proficiency in Java (17+) , Spring Boot , Node.js , and RESTful APIs . Frontend: Expertise in React , TypeScript , HTML5 , CSS3 , and other modern frontend frameworks. DevOps: Familiarity with CI/CD tools such as GitHub , Jenkins , Harness , and containerization using Docker More ❯
Central London, London, United Kingdom Hybrid / WFH Options
Halian Technology Limited
features that directly impact our customers and partners. Key Responsibilities: Develop backend microservices using Node.js (Express/Nest.js preferred) Build dynamic, responsive user interfaces with React.js Design and integrate RESTful APIs and third-party services Write unit, integration, and end-to-end tests to ensure software quality Collaborate on system design and architecture in a distributed AWS environment Implement CI More ❯
pipelines Cloud computing & DevOps: e.g. AWS (EC2, Lambda, S3), Docker, CI/CD, serverless architecture Frontend development: JavaScript/TypeScript, React, Dash, or similar frameworks Backend APIs: FastAPI, Flask, RESTful API design UI/UX design for data tools (e.g. streamlining internal workflows and dashboards) Experience with energy systems modelling/optimisation, quantitative risk modelling, or stochastic simulation Experience working More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
desktop development (C#.NET). My client can provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, WPF, MVVM, Prism, continuous integration, dependency injection, RESTful, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a fantastic opportunity to join a prestigious consulting firm that can offer you a More ❯
architectural reviews. Required Skills & Experience Strong proficiency in React. Deep experience with AWS services such as Lambda, API Gateway, DynamoDB, S3, and CloudFormation. Solid understanding of TypeScript, Node.js, and RESTful API design. Familiarity with DevOps practices and tools (e.g., GitHub Actions, Terraform, CloudWatch). Experience working in Agile environments and contributing to sprint ceremonies. Ability to challenge existing approaches and More ❯
Python Multi-threading & asynchronous programming Knowledge of commodities/Energy trading Dask, Pandas, Numpy frameworks. Full life cycle development Excellent Communication skills Python web framework (e.g., Flask, Dash) Built RESTful Web APIs More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. Fixed Income, Equities You're familiar with RESTful APIs, UI development and cloud computing You have excellent communication and stakeholder management skills You're degree educated in Computer Science or similar discipline What's in it for you More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Matched Group
or equivalent experience. Deep understanding of React Native and its core principles. Prior experience with iOS and Android platforms, having a deep understanding of the ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving More ❯
in Gosu and Java. Experience with Guidewire for Policy Center, Claims Center or Billing Center Collaborate with cross-functional teams to gather requirements and deliver solutions. Implement and optimize RESTful APIs and microservices architecture. Participate in Agile development processes and contribute to continuous improvement. Ensure code quality through testing and code reviews. Provide technical support and troubleshooting for production issues. More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. Fixed Income, Equities You're familiar with RESTful APIs, UI development and cloud computing You have excellent communication and stakeholder management skills You're degree educated in Computer Science or similar discipline What's in it for you More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Matched Group
or equivalent experience. Deep understanding of React Native and its core principles. Prior experience with iOS and Android platforms, having a deep understanding of the ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving More ❯
with continuous integration, test automation, and monitoring You must have the following skills: Strong proficiency in JavaScript, CSS, HTML including DOM manipulation and the JavaScript object model Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools Experience with common front-end development tools such as Babel More ❯
efficiently on an AI-driven project alongside the customers Lead Backend Engineer Work closely with ML Engineers, App Developers, and Data teams for integrated feature delivery Design and build RESTful APIs to expose AI models and LLM prompt-based services Integrate trained ML models into backend systems supporting real product features Build and maintain infrastructure for data ingestion, processing, and More ❯
familiarity with GDS (Government Digital Service) standards is highly desirable. Key Responsibilities: Design, develop, and maintain scalable, robust Scala-based applications. Work extensively with the Play Framework to build RESTful APIs and web services. Collaborate with UX/UI designers and backend teams to integrate user-facing elements. Write clean, testable, and efficient code following best practices and coding standards. More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
banking or financial services environment You have a strong knowledge of SQL databases You have a good understanding of asset classes e.g. Fixed Income, Equities You're familiar with RESTful APIs, UI development and cloud computing You have excellent communication and stakeholder management skills You're degree educated in Computer Science or similar discipline What's in it for you More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Run-Time Group Ltd
technical solutions clearly to a variety of stakeholders. Degree in Computer Science, Engineering, or a related STEM degree Solid understanding of systems integration concepts and hands-on experience with RESTful APIs and cloud-based architecture. Working with clients to build their digital business on cloud platform; including IaaS, PaaS (Cloud Foundry), Docker/containers (Kubernetes), DevOps, API integration among other More ❯
Team Lead position. Previous examples of delivering successful products & platforms. Programming Languages & Frameworks: TypeScript, Node.js, NestJS (REST API framework), AngularJS (or similar frontend frameworks) Databases & Data Management: PostgreSQL, PostgREST (RESTful API layer over PostgreSQL) Cloud Platforms & Infrastructure: AWS services, Cloud architecture (general understanding) Project Management Tools & Methodologies: Jira, Project management methodologies (Agile, Scrum, etc.) What you will get in return More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
practices and scalable architectures. You'll use a range of technology, primarily JavaScript on the backend and TypeScript on the frontend, you'll build secure, responsive user interfaces, implement RESTful APIs, optimise database queries for performance and ensure solutions are highly scalable and maintainable. This is a great opportunity to join a scaling start-up in a role that you More ❯
defining and systems and technology solution architecture using Salesforce technologies (e.g. Salesforce Lightning PaaS for application development) and ServiceNow Strong technical skills in Enterprise-grade integration architecture including modern RESTful API approaches and traditional file transfer, messaging, web services and ESB approaches Good technical skills and awareness of web/digital technologies and the business advantages of varying technology and More ❯
OEMs Collaborate on UI/UX design, DevOps workflow, and priority features with the wider team Participate in code reviews, and help resolve bugs, changes, and feedback efficiently Integrate RESTful APIs with backend teams to deliver seamless mobile functionality Work with AI subsystems including LLM prompts and tools, embedding intelligent features in mobile apps Write and maintain unit tests using More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C# - Break Into Banking - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Are you stuck in a catch 22 situation i.e. want to get into the financial services arena but your lack of experience within the industry is preventing you … some or all of the following (full training will be provided to fill any gaps in your skill set): .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and Azure SQL. No previous banking experience is required. This is a once in a lifetime opportunity to get involved in one of the More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
Graduate .NET Developer - Investment Bank - London (Tech stack: Graduate .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, Graduate .NET Developer) Our client is the world's most respected banking institution. Their story dates back to the 1890s and today they operate from over 10,000 offices in 100 countries. … framework (.NET, .NET Core/ASP.NET MVC, C# or C#.NET winforms) and Azure SQL. Our client offers training in: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This is a truly amazing opportunity to work for a prestigious banking brand that will do wonders for your CV. They invest More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer - Global Phenomenon - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking … .NET Core/ASP.NET MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C# - Global Record Label - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) We are pleased to announce that our client, one of the largest and most recognised brands within the music industry, is seeking .NET Developer to work out of … set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. My client offers flexible working hours, home working and amazing offices (onsite cinema, pool tables, bar, free canteen, gym). These positions More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C# - Computer Gaming Company - London (Tech stack: .NET Developer, .NET 9, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Having sold over 100 million games consoles and over 500 million games over the last decade, my client is undoubtedly the world's most recognised computer gaming brand. We … that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide with exposure to: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This is a truly amazing opportunity to work for a forward thinking and progressive company, one that can provide you with an More ❯