> Markdown version of [/jobs/ext/2019276-frontend-javascript-developer](https://www.wearedevelopers.com/jobs/ext/2019276-frontend-javascript-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Frontend Javascript Developer - **Company:** Quant Capital - **Location:** London, UK - **Salary:** £90,000.0 - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), Application Programming Interfaces (APIs), Unit Testing, Continuous Integration, Node.Js, Open Source Technology, TypeScript, Web Application Frameworks, ReactJS, Cypress (Programming Language), Backend, Webpack, AngularJS, Graphql, Front End Software Development, React Redux - **Published:** August 11, 2026 - **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2918892771-2 ## About the Role Developers Must Have most of the below (gives you a good idea of tech stack)Deep knowledge of JavaScript or TypeScript, HTML and CSSExperience of backend systems such as node.js, GraphQL and RESTUse of modern JavaScript frameworks such as React, Redux, Styled Components, Apollo GraphQLUX and visual design skills are a plusYou will be joining a progressive and exciting company committed to excellence. They offer an excellent working environment with ongoing training and a structured career path. You can also expect an excellent salary and benefits package.The environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. The atmosphere is calm and relaxed with an open dress code. This is a role for techies, those who are motivated by the sharp end of technology and the possibility of making serious money doing something you are passionate about.Follow me on Twitter for more roles and news @SebFintechTypeScript / React / Redux / Styled Components / Apollo GraphQL / Webpack / Jest / Cypress / Prettier ## Description JavaScript Developer UI React TypeScript - Up to 90,000 p/aQuant Capital is urgently looking for a JavaScript Developer to join our high profile client.Our client is a 60 man Fintech business who has created a market leading product in the financial data market. Details of the full ideas of the company are protected by a Non-Disclosure agreement but they are at the bleeding edge of not only product ideas but also technology and data manipulation.TypeScript / React / Redux / Styled Components / Apollo GraphQL / Webpack / Jest / Cypress / PrettierWe are growing our UI team to develop new features for our exciting frontend product built in React, as well as maintaining existing features and occasionally porting features from a legacy Angular codebase. Additionally we are responsible for our GraphQL API built in node.js and Apollo to interact with a microservice backend layer. The team's mandate is to create an entirely new user experience and engineer the UI with the best and latest technologies.Work with the product team to prototype and deliver features for the UICollaborate with server side developers to add new featuresBe responsible for visual consistency of the UIYou believe in the agile approach of breaking long term projects into small deliveries to achieve rapid changes. You are keen on learning more and contributing your knowledge back to your peers inside and outside the office.Development is agile and fast paced. The day begins with a short scrum at which tasks will be distributed and any road-blocks cleared. Work is test driven, with unit tests implemented first to be run in a continuous integration environment. Only then do they write code. To deliver quickly you will leverage the best of the open source community, sometimes substituting your own solutions where greater performance is needed. You will be encouraged to evangelise and prototype new technologies and through doing so you will help shape the architecture.JavaScript ## Related Videos - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Micro Frontends with Module Federation: Why and How?](https://www.wearedevelopers.com/videos/165-micro-frontends-with-module-federation-why-and-how) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) ## Related Articles - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)