development, with exposure to both backend and frontend stacks. Strong programming proficiency in Python, C++, and Java (Quant/Trading grade codebases). Expertise in modern web development with React, Node.js, MongoDB, and SQL (Postgres, MySQL). Strong understanding of Git/GitHub, CI/CD workflows, code branching strategies, and code ownership. Prior work in a fintech, hedge fund More ❯
stakeholders (e.g., clients, users, product, platform, application owners). Design, develop, and maintain software applications using Python and SQL. Design and implement user interfaces using modern JS frameworks (e.g. React, Angular, or Vue.js). Build and maintain ETL/ELT pipelines and data models within data warehouses, an example pipeline being ingesting data from multiple Cyber Intelligence vendors. Architect and … transformation within data warehouses, knowledge of tools such as DBT is desired. Experience with front-end technologies, such as HTML5, CSS3, and JavaScript. Knowledge of JavaScript frameworks, such as React (preferred), Angular, and Vue.js. Knowledge of CSS frameworks, such as Bootstrap, Material UI, and Tailwind CSS. Strong understanding of API protocols and standards, including REST and GraphQL. Hands-on experience More ❯
Docker). • CI/CD pipeline experience, using GitHub Actions or Azure DevOps. • Database development skills in SQL, NoSQL, and cloud-native data stores. • Front-end development experience using React, with a solid grasp of UI/UX design and usability principles. • Proven experience in Agile teams, applying modern architecture, design patterns, unit testing, and maintaining high code quality standards. … Desirable Skills • Domain experience in the energy sector (e.g., downstream, upstream, integrated gas, energy trading, renewables & energy solutions). • Familiarity with Redux in React-based front-end development. • Experience with messaging systems such as Kafka, RabbitMQ, or Azure Service Bus. • Proficiency in Microservices and Cloud-Native Architecture. This needs combining with a positive attitude and an ability to work within More ❯
Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external APIs such as AWS, Stripe, Zendesk, Twilio, Google Analytics, Google Ads, HMRC, etc... Code Quality … in Computer Science or related field from a Tier 1 university. Experience: Minimum of 4 years of full-time professional experience in software development, with strong expertise in TypeScript, ReactJS, and Next.JS. Solid experience in building RESTful APIs Leadership: Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL More ❯
City of London, England, United Kingdom Hybrid / WFH Options
ACLED
modern and competitive. Skills & Experience Required: Degree in Computer Science, Software Engineering, or related field. 3-5 years professional experience as a Full Stack Developer. Proficiency in PHP, JavaScript, React, NEXT.js, HTML/CSS, responsive UI frameworks. Experience building scalable REST APIs using Python, Java, Golang, PHP, Node.js, etc. Knowledge of web performance tools and SEO strategies. Understanding of authentication More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
Senior C# Developer/Engineer (C# .Net Core React) London/WFH to £80k Are you a skilled C# Developer looking to work on complex and interesting systems with continual learning and self development opportunities You could be progressing your career at in a senior, hands-on role at a successful and scaling Retail FX Brokerage working on Greenfield systems. … a Senior C# Developer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in a modern development environment with …/Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript/TypeScript/React.js or Angular You have strong analytical and problem solving skills You're collaborative with excellent communication skills What's in it for you: As a Senior C# Developer/Engineer More ❯
to improve release velocity and confidence. Technical Skills Required: Proficiency in modern programming languages and frameworks (e.g. JavaScript/TypeScript, Python, .NET, Node.js). Experience with frontend development (e.g. React, Angular, Hugo). Strong understanding of backend systems, API design, and system integration. Comfortable working with cloud platforms such as Microsoft Azure or AWS. Familiarity with databases (SQL/NoSQL More ❯
Knowledge on Document management and generation systems/applications. Experience with CI/CD pipelines. Familiarity with message brokers (e.g., RabbitMQ, Kafka). Knowledge of front-end technologies (Angular, React). Security-conscious development practices. Profound knowledge and experience in using J2EE/Jakarta EE frameworks and technologies such as Enterprise JavaBeans (EJB)/CDI, EJB Lites, Java Server Pages More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
a Backend Software Engineer you'll be designing and developing high quality, maintainable, and reliable code for a real-time, low latency trading systems built mostly in C# and React deployed to Azure. You'll focus on C# .Net backend development within an AWS environment, but also with exposure across the full technology stack in a modern development environment with …/Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript/TypeScript/React.js or Angular You have strong analytical and problem solving skills You're collaborative with excellent communication skills What's in it for you: As a Backend Software Engineer/Developer … competitive package: Up to £80k salary Bonus Private Healthcare Pension 25 days holiday Apply now to find out more about this Backend Software Engineer/Developer (C# .Net Core React) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Haystack
aptitude and a genuine passion for sustainability. Key Responsibilities: Develop and maintain both frontend and backend components of digital solutions. Contribute to user interface development using technologies such as React.js, TypeScript, and Tailwind CSS. Support backend development using Python (Django/FastAPI) and Node.js (Express). Assist with database development and maintenance (PostgreSQL, MySQL, and optionally MongoDB/DynamoDB). More ❯
City of London, England, United Kingdom Hybrid / WFH Options
CFP Energy (UK) Ltd
seizing energy investment opportunities. Job Summary As a Full Stack Developer, you will be a key contributor to our dynamic development team. With a focus on .NET Core and ReactJS, you will play a crucial role in designing, implementing, and maintaining robust, scalable, and user-friendly DataPortal. This position offers an exciting opportunity to work on cutting-edge projects and … collaborate with cross-functional teams in a fast-paced environment. Key Responsibilities Design and develop scalable, high-performance applications using .NET Core for the backend and React for the frontend. Collaborate with product managers, designers, and other developers to understand project requirements and deliver solutions that meet user needs. Write clean, maintainable, and efficient code while adhering to coding standards … degree in computer science or a related field. Minimum of 4 years of experience as a Full Stack Developer. Strong proficiency in .NET Core for backend development. Expertise in React for building modern and responsive user interfaces. Solid understanding of web development concepts, including RESTful APIs and asynchronous programming. Experience with database systems (MySql, MongoDB, PostgreSQL, etc.). Knowledge of More ❯
Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role : Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience: 5+ years Relevant Experience: React.Js, Typescript, Azure Job Description: • Proven experience as a Front-End Developer with a focus on React.js, and Typescript. • Familiarity with C# and .Net. • Strong proficiency in … Strong problem-solving and debugging skills. • Excellent teamwork and communication skills. • Attention to detail and an eye for design and user experience. • A portfolio of past projects showcasing your React.js expertise. #J-18808-Ljbffr More ❯
Senior Full Stack Engineer London, UK - Fully Onsite Key Technologies: Java, JavaScript, React, Docker, Kubernetes Perm Role | £80,000 - £120,000 Harrington Starr has partnered with a leading financial institution on a mission to transform investment banking through cutting-edge technology. Their Investment Banking Middle Office Technology team plays a crucial role in enabling efficient trade management with institutional counterparties. … shape solutions Contribute to agile best practices Key Requirements: 5+ years of core Java development experience Expertise in microservices architectures (Spring Boot, Docker, Kubernetes) Strong experience with GUI technologies (React, TypeScript, HTML5) Experience in full SDLC (Git, Maven, Bamboo) Strong understanding of modern software design & architecture A proactive mindset and a collaborative approach Key Benefits: Private pension plan Up to More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C#, Agile - London (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) We are pleased to announce the arrival in the UK of one of Silicon Valley's most successful and exciting brands. They're at the … solutions. .NET Developer applicants should have commercial experience with: .NET, .NET Core/ASP.NET MVC, C#, Azure SQL and Agile. Full training will be provided into: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. If you are dedicated to the youthful optimism of More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C#, SQL Server - Investment Bank - London (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, operations in over 20 countries our client has fast becomeWeb API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's most respected banking institution. Their story dates … applications. .NET Developer applicants should have a skill set that encompasses: .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client offers training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a truly amazing opportunity to work More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, .NET 9, C# - Consultancy - London Or Surrey (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is an award winning Microsoft consultancy. They specialise in delivering innovative .NET technology based business solutions to investment banks, financial services … .NET Core/ASP.NET MVC, C# and Azure SQL. Knowledge of software development methodologies is of interest (Agile, Scrum). My client will provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is a truly exciting project, one which More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer, C# - Financial Consultancy - London (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Azure, WPF, MVVM, Prism, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Established in the early 1970s, our client delivers cutting edge I.T solutions to banks. With over 70,000 employees in over 50 countries and strong partnerships with some … with experience in either web application development (.NET Core/ASP.NET MVC, C#) or windows/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. More ❯
City of London, London, England, United Kingdom Hybrid / WFH Options
Noir
.NET Developer (Tech stack: .NET Developer, .NET 9, C#, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) We have several fantastic new roles for .NET Developer to join an ambitious Fintech start-up. This is your chance to work with the sharpest minds in private wealth … client is looking for passionate .NET Developer with experience in .NET, .NET Core/ASP.NET MVC, C# and Azure SQL. Our client will provide training in: .NET 9, JavaScript, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, AWS, Web API 2, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This is your opportunity to be part of a More ❯
is highly desirable, as it is our primary front-end framework; however, we are also open to candidates who have experience with other modern front-end technologies such as React or Angular. Familiarity with cloud technologies is essential, and while we primarily use Microsoft Azure, we welcome candidates with experience in AWS or Google Cloud Platform (GCP). Expert knowledge … of C# and .NET framework Hands-on experience with Blazor for front-end development (or React, Angular, or similar) Strong understanding of cloud platforms including Azure, AWS or GCP Solid experience in building RESTful APIs and microservices Proficient in using version control systems such as Git Good understanding of secure software development practices Strong problem-solving and analytical skills Excellent More ❯
back end development. Key Responsibilities: Full Stack Development: Design, develop, and maintain both front-end and back-end components of our applications using C# for the back-end and React for the front-end. System Architecture: Contribute to the design and architecture of new features and systems, ensuring scalability, performance, and security. Collaboration: Work closely with Product Managers, UX/… and Experience: Software development, with a strong focus on both front-end and back-end technologies. Expertise in C# and .NET Core for server-side development. Strong experience with React and modern JavaScript (ES6+), including state management libraries like Redux or Context API. Proven experience with RESTful API development and integrating third-party services. Solid understanding of SQL and NoSQL More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Haystack
You’ll collaborate with product managers, designers, and senior engineers to understand project goals and deliver high-quality solutions. You’ll work with technologies like Node.js, JavaScript, TypeScript, and React, and play a key role in leveraging AI-powered development tools (such as GitHub Copilot, Cursor, Claude Code, or Gemini) to improve efficiency and code quality. We’re looking for … services and APIs with Node.js and TypeScript. Integrate third-party services and manage data pipelines. Ensure performance, reliability, and scalability of applications. Frontend Development Build responsive user interfaces with React and TypeScript. Ensure cross-browser compatibility and seamless API integration. Full-Stack Collaboration Work cross-functionally to develop and ship new features. Own tasks from conception to production deployment. Cloud More ❯
leadership/mentorship. Wanting to unleash their inner self-starter and work in an environment that fosters entrepreneurial minds. The FS role should have everything from BE plus: Experience: React, Webpack, SCSS etc, WebSockets, Federated Modules Good to have: Rspack, Micro-frontends We are using HackerRank for the pair programming Tooling: JIRA, Splunk, Slack More ❯
solutions across a varied technology stack, including: - Object-Oriented design, SOLID principles, and modern design patterns - Developmentexperience in Microsoft .Net Framework and experience inFront-end JavaScript frameworks like Angular & React - Traditional Relational Database technologies like Oracle, MS SQL Server and - No SQL Databases like MongoDB or DynamoDB - SOA & Microservices architecture implementation using REST APIs, queue-based messaging patterns, exposure toMulesoft More ❯
