JavaScript Developer jobs in City of London

Job Description React Native Developer - Hybrid - Outside IR35 | React Native | FinTech | JavaScript | TypeScript We’re working with a fast-growing FinTech in London that’s building next-generation mobile products used by thousands of customers daily. They’re looking for an experienced React Native Developer to join the team on a contract basis, contributing to high-impact features across their...

Job Role: Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the...

We are currently looking for creative and technical graduates to join a leading financial institution as Graduate Software Developers in the summer 2026. With a perspective on actions today that shape tomorrow. This firm is an innovative, global trading firm. In an ever-changing world, they pride ourselves in offering a unique service. They strive to be the best in their field through exceptional...

ServiceNow Platform DeveloperLocation: UK (Hybrid 2-3 days onsite)Salary: Up to £80,000 + BenefitsAbout the RoleWe are looking for a ServiceNow Platform Developer to join our clients team delivering modern, scalable ServiceNow solutions across Customer, Technology, and Employee Experience platforms.You'll work closely with senior architects and consultants to design, configure, and deploy...

You will also be working very closely with their customers and this is experience that they really value. If this is of interest, please get in touch ASAP - will be moving quickly!

Job Description 6 month rolling contract - Inside IR35 - Investment Banking Key Responsibilities · Participate in an agile based software development life-cycle including technical analysis, documentation, development, testing and code reviews. · Collaborate with the production support team for release and maintenance of the components. · Work closely with the other developers in determining...

You will have a primary platform focus, while also working across both platforms as needed to: - Share knowledge and best practice - Support continuity and resilience - Help direct effort toward the areas that need it most

About Aero A digital experience company, we sit at the intersection of insights, creativity and technology, crafting digital experiences that transform business performance. We’re a small, fully remote team with big ambitions. We work hands-on with our clients, giving our teams genuine ownership of their work. Every project you touch will be seen by thousands of people and will directly...

You will be comfortable with Django/Flask, Gitlab and have experience of container infrastructure. This is a three month rolling contract that will require you in the office, just outside London twice a week at rate of £500 a day (inside IR35). The role will involve contributing to the design and feature requirements, then developing the required changes within an existing network automation team.

Role: Software Developer (React) – Up to £120,000 + Bonus + Package Make sure to apply with all the requested information, as laid out in the job overview below. Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript / TypeScript) This firm is an elite technology company with exceptionally high standards, known for...

SeniorDeveloper(Node/React) Areyouapragmatic,innovative,andself-motivatedproblemsolverwithapassionforbuildingscalable,high-performingsoftware?We'relookingforaSeniorFullStackEngineer,withstrongskillsinNodeandReact,tojoinahigh-performingproductteamworkingonaglobal,high-trafficeCommerceplatformhandlingthousandsoftransactionsdaily. Skills, Experience, Qualifications, If you have the right match for...

Are you a talented, super-ambitious full-stack developer? Excited by building solutions to real-world challenges? Motivated by owning shares in a high-growth business? Their mission is to unify the fragmented landscape of school technology through intelligent, human-centred design. By replacing disconnected silo systems with one seamless platform, they restore joy to teaching, strengthen...

Full Stack Engineer – New Launch Hedge Fund (L/S Equity) Location: London Type: Full-time (5 days per week on-site in Victoria) A newly launched fundamentally driven long/short equity hedge fund, focused on the European Industrials sector, is seeking a talented Engineer to join its growing London-based team. The firm, currently composed of senior professionals from top-tier hedge funds including...

Backend Engineer (Mid/Senior) Stack: Node.js, Typescript/Javascript, PostgreSQL, RESTful APIs, GraphQL, AWS Location: NW London, Hybrid The Package: £60,000 - £65,000+ generous holidays Qualifications, skills, and all relevant experience needed for this role can be found in the full description below. My client, a leading DTC e-commerce brand just got huge investment to scale it's digital...

Job Description Title: Software Engineer in Test Company: Specialist Technology / eCommerce Platform Location: London – 2-3 days a week Salary: up to £60,000 + benefits Tech essentials: Javascript and either Cypress or Playwright Interview process: 3 stage interview process Why should you be interested in this opportunity? - You’ll be part of a dynamic multi-disciplinary team, taking...

You will work closely with product managers, designers, and other engineers to solve complex problems and create intuitive solutions that help simplify financial workflows for our users. You’ll have the opportunity to own critical features and contribute to the overall architecture of our platform.

Job Description Build the engine behind the platform, transforming frontline access. At Cocentric, we’re scaling Connect – our flagship SaaS platform built to simplify workforce access, provisioning, and digital identity. From automated onboarding to secure SSO and real-time data integrations, Connect is helping frontline organisations empower their people at scale. We’re looking for a...

Job Description Driven by Intelligence. Powered for the Future. Avant Intelligence is a global innovator in AI-powered robotics and intelligent inspection solutions. At the forefront of industrial digitalization, Avant develops autonomous robotic systems that enhance safety, efficiency, and reliability across energy, transportation, and EV-charging sectors. With cutting-edge expertise in...

Job Description We’re building the AI layer that autonomously runs small businesses. Working alongside technical founder Kai Feller (previous company was UK’s largest bootstrapped exit of $300m), we're assembling an elite founding team that moves fast and gets things done. As a Founding Engineer, you’ll ship step-changing features fast, shaping architecture, and integrating cutting-edge AI...

Are you a talented, super-ambitious full-stack developer? Excited by building solutions to real-world challenges? Motivated by owning shares in a high-growth business? Want to join a team of smart, committed, and highly functioning professionals? This might be the role for you! The company… Our client is an ambitious, fast-growing EdTech disruptor. They exist to create a world where educators...