full stack javascript engineer jobs in London

TechTree in London is building a frontier AI platform integrating a foundation model into safety-critical embedded control software. You will shape the architecture and write a large share of core code in year one, directly impacting how engineers trust and use the product.As the team scales, you will provide technical leadership, establish standards, hire...

TEAM LEWIS is looking for a Developer to join our incredible team of creative, forward thinking Developers. We are looking for someone with a strong and detailed understanding of both back-end concepts and front-end development. This is an exciting time to be joining TEAM LEWIS as we seek to rapidly expand our development team. This is an opportunity that...

Company DescriptionWise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed.Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money.As part of...

Full Stack Developer London · Hybrid Location: London Contract type: Full time, permanent We're looking for a Full Stack Developer to be the first in‑house engineer building Pubity Suite, the internal product platform behind one of the World’s largest social publishers. The opportunity Pubity Suite is the operating system behind 22+ social first brands,...

Harnham is partnering with a high-growth international technology business to join the platform engineering team. You will own projects from design through to production, rebuild core services, and mentor colleagues while driving modernisation efforts across the platform.Based in London, you will design, build and maintain backend services, APIs and web...

Emma is looking for a capable full-stack engineer with at least 2 years of experience to help build our backend and mobile/web apps.You will work with libraries and frameworks such as gRPC, Redux, React Native, React and Next.js on an ambitious roadmap, delivering high-quality code in a fast-paced, ownership-driven environment.We operate from our London...

As a Full Stack Developer, you will discover, design, build, cloud-based applications and prototypes that support discovery workYou’ll work across both front-end and back-end development, helping teams explore, test, and validate new technical approaches and digital services that underpin wider reform programmesDesign, develop, and test applications using...

Role Overview We are seeking an experienced Full Stack Developer with strong expertise in Node.js, Next.js, Angular, and cloud-native microservices. The ideal candidate will have a proven track record in designing, developing, and deploying scalable applications on Google Cloud Platform (GCP), with a solid understanding of DevOps practices and modern CI/CD...

Xist4 IT Limited is hiring a Full Stack AI Engineer for a fully remote role across the UK. You will own features from frontend to AI workflow using Next.js, Python, and Node.js in a production product.You will design AI-driven workflows with LLMs, memory, and tools, ensure reliability, latency management, and real-time interactions, and work in a small...

Devonshire Hayes Recruitment Specialists Limited are recruiting an experienced Full Stack Developer to build a greenfield trading platform for a financial services business. This 12-month FTC role is 3 days per week onsite in the City of London with full perm benefits including bonuses.You’ll drive real-time trading interfaces with Next.js and React, while...

About this RoleWe are looking for a highly skilled Senior Associate Full Stack Developer who will contribute to the design, development, and maintenance of scalable, high-performance web applications across both frontend and backend layers. The role requires strong hands-on expertise in React.js, Node.js, and modern web technologies, with the ability to lead...

Full-Stack Developer London | Fully Onsite | Permanent Harrington Starr is partnering with a leading investment management technology firmto hire a Full-Stack Developer. This is a hands-on role working closely with front-office users to develop, support and enhance a business-critical investment platform. The Role: Build features across the full...

Working with a global financial services organisation who are looking for a hands-on Senior Full Stack Developer.Details Location – London Hybrid 3 days / week in office Duration – Initially 6 months Rate - £550-£650 / day Inside IR35 via UmbrellaSkills and Experience RequiredTypeScript, or React AWS and TerraformExperience providing feedback to...

Oliver Bernard is partnering with a global technology company to recruit a Senior Full Stack Engineer in Greater London. You will join a cross-functional team of engineers, product, design and QA, delivering high-scale, real-time systems from the ground up.Expect ownership, mentorship, and opportunities to shape architectural decisions in a high-velocity...

Pairwise is seeking a Senior Full-Stack Engineer to join their dynamic team in Greater London. This full-time role involves architects and shipping core products using Python/Django and React. Candidates should have over 5 years of engineering experience with a strong focus on applied AI. Join a mission-driven company with competitive compensation and...

We are looking for a Senior Full-Stack Engineer to join our global Investment Banking client. You will be responsible for the development and overall implementation of AI-enabled web applications in a complex, critical and large cross-departmental and multi-disciplinary area.The role is part of a multi-year transformation journey that will require a...

Location: London (Hybrid) (UK-based)Salary: £50,000 + EquityDepartment: EngineeringJob Type: Full-TimeCategory: HybridAbout ZenroxZenrox Healthcare UK is developing an AI-powered marketplace connecting healthcare facilities with MHRA-compliant medical equipment suppliers. Our platform, ZenroxIQ, enhances procurement through intelligent matching, automated...

Web Developer - Full-StackLondon (Hybrid) Our client, a leading entertainment group, are looking for a full-stack Web Developer to join their team in London. You will ideally have experience with front and back-end tech stacks including Ruby, React, HTML, JSS and Javascript. The ideal person will have worked with Agile methodologies and have working...

We are looking for aSenior Full Stack Engineerto build and supportmarket data platformswithin a Global Markets environment. This role focuses on developingend-to-end solutions across UI,APIsanddata layers, supporting criticalmarket data analytics,distributionandusage workflows. The ideal candidate will have strong experience infull-stack development,...

Senior Full Stack Lead Engineer ReactJS, TypeScript, JavaScript, C#/.NET Banking LondonThis is a new and exclusive opportunity for a Senior Full Stack Lead Engineer/ software developer with expertise across ReactJS, TypeScript, JavaScript, C#/.NET to join this investment Banking client as they expand their full stack software developer team in London...