javascript jobs in London

Software Engineer III (Java & JavaScript) Do you enjoy designing and developing scalable, high-performance applications using Java and JavaScript? About the team: You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global product suite. We build and operate a highly...

Job ID: 6977Location: LondonSalary: 80,000-90,000 per yearPosted: 2026-09-28JavaScript Developer – React / TypeScriptNcounter is supporting a growing technology consultancy delivering digital transformation programmes across law enforcement, public safety and wider government. We are looking for an experienced Frontend Developer who can combine strong...

Ruby Developer – Full Stack, Rails Javascript, TDDQuant Capital is urgently looking for a Ruby Developer to join our high profile client. Our client is in this year’s fintech50 they are a disruptive force in the global investment and payments space. The office is casual with a compete tech focus (quiet coding area, loud games room). The position is for a...

Base pay range Direct message the job poster from Client Server Tech Recruiter - Software Engineering at Client-Server Opportunity to progress your career in a senior, hands‑on Software Engineer role at a scale‑up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining...

Python JavaScript Full Stack Web Developer Fintech Quant Capital is urgently looking for a full stack web JavaScript and Django Web Developer to join our high profile client. Our client is a major global financial exchange, driven by technology. They are at the bleeding edge of not only product ideas but also technology and data manipulation. They use unique...

Ruby / JavaScript Web Developer – Rails Fintech 50Quant Capital is urgently looking for a Ruby / JavaScript Web Developer to join our high profile client. Our client is a brand new investment firm driven by technology. They are well known in the media as solving one of the common problems for the retail investor and in the current climate this is a unique...

JavaScript Node.JS Developer BlockchainQuant Capital is urgently looking for the best in the market of Javascript Development to join our high profile client.Our client prefers to give very few details about themselves but they are a small London based firm who believe that by taking the lead in providing innovative solutions based on emerging technologies...

Angular.JS Javascript Developer hashtag-hack pseudo-app up to 65K Quant Capital is urgently looking for an Angular.JS Javascript Developer to join our high profile client. Our client is a 50 man start up who have created a market leading product in the financial business loans market. Details of the full ideas of the company are protected by a Non...

Full Stack ASP.NET JavaScript Developer 70,000 Plus Bonus Home work and flex work encouraged Quant Capital is urgently looking for a Full Stack ASP.NET JavaScript Developer to join our high profile client. Our client is the world leader in Market data management systems, with clients globally such as most of the major investment banks. Their team in...

Path to CTO. Please note my client is not willing to sponsor candidates and therefore I can only accept applications from candidates who are eligible to work in the UK. My client is an ambitious UK based start-up with strong domestic and international growth plans. Having built their technology and platform through contract resource they are now looking to...

Elsevier Limited Company is seeking a Senior Software Engineer I (Java & JavaScript) to design and develop scalable, high-performance applications within the Identity & Access Management team. You will contribute to authentication and authorization infrastructure that powers our global product suite, operating on AWS ECS and EKS.The role involves tackling...

Spirit It Services is seeking a hands-on full-stack developer to join our team in London. You will enhance our in-house frameworks and core applications, tackling new features and bug fixes with JavaScript, Node.js, and React.Collaborate with project managers, designers and engineers to tailor solutions that meet business needs, uphold quality, and embrace...

The company… Our client is an ambitious, fast-growing EdTech disruptor. They exist to create a world where educators are liberated from administrative burdens and empowered to focus entirely on what matters most—nurturing the potential of every student. Their mission is to unify the fragmented landscape of school technology through intelligent,...

About the team:You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global product suite. We build and operate a highly available identity platform that integrates with multiple identity providers, entitlement services, and downstream APIs, running on AWS ECS and...

Full Stack JavaScript DeveloperHome based working60,000Stack: Node.js, React, MongoDB, TypeScript, Meteor, NativeScript, AngularITAP Group is both a successful online media business and digital payments firm at an exciting growth phase.We are looking for a very keen full stack developer who is willing to learn in a fast-paced environment in a close knit team...

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.Make your application after reading the following skill and qualification requirements for this...

Opus Recruitment Solutions provided pay rangeThis range is provided by Opus Recruitment Solutions. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster from Opus Recruitment SolutionsJob DescriptionI have teamed up with a scale-up start-up in the Blockchain/Web3...

Junior Ruby Developer – HTML5, Rails Javascript, TDD Quant Capital is urgently looking for a Junior Ruby Developer to join our high profile client.Our client is in this year’s fintech50 and well known to disrupt the global payments and Foreign exchange markets.The position is for a hands Junior Ruby Developer to build new and maintain existing Rails...

A tech company in the United Kingdom seeks a proactive and team-oriented developer for a fully remote position. The ideal candidate will collaborate with enterprise clients and tackle complex challenges. Proficiency in React, Node, Express, Mongo, and SQL is required. The company offers growth opportunities in a flexible environment with meaningful projects....

Senior Full-Stack Software Engineer (Java & React / Javascript / Angular)Would you like to help create products to support the sharing of scientific knowledge?Do you enjoy collaborating to solve complex technical problems?About the teamOur dynamic Agile Teams deliver the technology which facilitates researchers to publish quality scientific research. As a...