javascript developer react 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...

Company: 8 Signals Limited About us 8 Signals is a UK-based software development company specialising in building tailored digital solutions that help businesses solve complex problems and streamline their operations. We combine strong technical expertise with a deep understanding of our clients’ requirements to deliver high-quality software, whether that’s new applications, enhancements to...

Design Team | Front End Developer | React | Astro | Websites | London London | £140,000 + Benefits I’m hiring a Front-End Developer for a highly respected developer tools company whose software is used inside mission-critical, data-heavy applications. This is a hands-on frontend role embedded within the design team. You’ll work closely with designers to build and maintain websites, implement...

Job Title: Frontend Engineer – React / TypeScript / Next.js Location: London (Hybrid – 2‑3 days in office) Salary: £70,000 – £75,000 + Equity About the Company You’ll join a fast‑scaling SaaS business that’s redefining how enterprise sales teams operate. Their platform uses advanced AI and deal‑intelligence to unlock hidden insights, streamline workflows and elevate team performance. Backed...

Benefits ~9% pension contribution ~ Stock Options ~ Health Insurance etc This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company ~$120m VC-backed Scale-Up ~ One of the fastest-growing companies in the world ~ 'Fast Company' Most...

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...

SeniorDeveloper(Node/React) Interested in learning more about this job Scroll down and find out what skills, experience and educational qualifications are...

Job Description Role: React Developer Location: London (3 days onsite, 2 days remote) Duration: 5 months FTC Salary: £50-£60k After an extremely successful year, a Digital Agency is looking to expand its Web Development team for its growing and varied client base. You will be responsible for working closely with the Project Management & Design team - ultimately creating brilliant digital...

Job Description Role: React Developer (Junior - Mid-Level) - Up to £130k Base Salary + Bonus + Package Salary: Up to £130k Base Salary + Bonus + Package Location: London (Hybrid) Skills Required: Extensive React experience needed This firm is an elite investment institution that uphold extremely high tech standards. They are made up of some exceptionally talented individuals who above all...

Job Description We are currently recruiting full stack developers to join a trading technology team at a leading investment firm. This team is responsible for building a new front-office trading platform used directly by traders and quants. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading...

The Challenge Healthcare delivery increasingly depends on continuous patient engagement and real-time health monitoring outside traditional clinical settings. As wearable devices and health tracking capabilities proliferate, the industry needs engineers who can build secure, reliable mobile experiences that seamlessly connect patients, their health data, and AI-powered clinical insights into a...

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...

Benefits ~9% pension contribution ~ Stock Options ~ Health Insurance ~ L&D Budgets This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this hyper-growth eCommerce solution. The Company ~$120m VC-backed Scale-Up ~ One of the fastest-growing companies in the world ~ 'Fast...

Role: React Developer Location: London (3 days onsite, 2 days remote) Duration: 5 months FTC After an extremely successful year, a Digital Agency is looking to expand its Web Development team for its growing and varied client base. You will be responsible for working closely with the Project Management & Design team - ultimately creating brilliant digital experiences for a new client, the work is...

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 and following best...

Job Title: Frontend Engineer – React / TypeScript / Next.js Location: London (Hybrid – 2‑3 days in office) You’ll join a fast‑scaling SaaS business that’s redefining how enterprise sales teams operate. Their platform uses advanced AI and deal‑intelligence to unlock hidden insights, streamline workflows and elevate team performance. You will help shape the front end of a high‑impact product used...

Job Description Job Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the...

Role: React Developer (Junior - Mid-Level) - Up to £130k Base Salary + Bonus + Package Salary: Up to £130k Base Salary + Bonus + Package Location: London (Hybrid) Extensive React experience needed They’ll find the best team to suit your skillset/interests but you'll be working with the latest versions of React, directly with traders and quants to build out highly reactive UI's and frontend tools...

Title – Junior JavaScript Engineer Client – Fintech Start-Up (Trading) Rate - Up to £100,000 + Bonus Location – London My client is a rapidly scaling fintech start-up looking for a Junior Front End Engineer (1–4 years’ experience) to join their growing team of talented software engineers. This is a fantastic opportunity to work alongside experienced technologists from top tech companies and...

Full-Stack Engineer (React / Python / AI) Location: London (Hybrid) An early-stage, well-funded tech startup building AI-powered software to help businesses make smarter decisions and improve operational performance . The team is small, highly technical, and mission-driven, giving you the chance to shape both the product and engineering culture. We’re looking for a Full-Stack Engineer to join a...