1,671,180+ Full Stack Javascript Developer Jobs in UK — Top Companies Hiring July 2026

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Senior Full Stack Engineer: React, Python, Azure & AI

ClearRoute is seeking a Senior Full-Stack Developer in Greater London to design and maintain scalable web applications. The candidate should have extensive experience with React and Python, alongside proven Azure deployment skills. Responsibilities include integrating AI-driven components and ensuring applicatio ...

Full Stack Web Engineer: PHP + Modern Frontend & APIs

Experience and skills we need You will have hands‑on experience with HTML 5, CSS and CSS precompilers, JavaScript & TypeScript and other modern web development core technologies. You will have worked with PHP 8 & PHP Frameworks such as Symfony, Laravel, CakePHP or Slim. It would be desirable for ...

Senior Full Stack Engineer – Enterprise AI Systems, Equity

A cutting-edge technology company based in the UK is seeking a Senior / Lead Fullstack Engineer to create innovative systems within global enterprises. In this role, you will be designing production-grade systems that handle complex, unstructured data, while taking full ownership of your projects. If you thrive ...

Technical Solution Architect — Cloud & Full Stack Lead London

Technical Solution Architect – Capgi London, United Kingdom Posted 12 months ago Tech Stack JavaScript Angular React Java Python TypeScript AWS Your Role: Lead and manage so ...

Full Stack JS Engineer Learning Budget & Flexible Hybrid

A leading education technology company is looking for a Software Engineer to enhance user experience and manage technical SEO projects. You'll join a squad dedicated to developing high-quality web applications using JavaScript, React, Next.js, and Node.js. The role offers a competitive salary of £60,000 along wi ...

AI Driven Full Stack Engineer for Product & Growth

GetGround is seeking a Full Stack Engineer to join their cross-functional teams in London. This role involves building user-facing products using technologies like React, Remix, and Golang. Successful candidates will work in an AI-driven environment, collaborating closely with product and design teams to deli ...

Full Stack Engineer (Kotlin and/or Python) – VP

Full Stack Engineer (Kotlin and/or Python) – VP Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From ...

Staff Full Stack Engineer: AI Driven Retail Platform

algo1, a VC-backed stealth-mode company based in Greater London, is seeking a Staff Full Stack Engineer. This critical role combines Product, ML, and Engineering to revolutionize the retail stack by designing AI-driven solutions for in-store experiences. Qualified candidates will bring 8+ years of experience, ex ...

Founding Full Stack/Platform Engineer — AI SaaS, Equity

A tech startup is seeking a Full-Stack/Platform Engineer to be a foundational hire in developing an AI-native platform. Responsibilities include owning the technical lifecycle, designing production SaaS solutions, and scaling AWS infrastructure. The ideal candidate has 7+ years of experience with strong skills i ...

Full Stack Engineer (£75k £100k + Equity) at Aisy.ai

Job Title: Full Stack Engineer Salary: £75k–£100k + Equity Company Description: Aisy.ai - Seed-funded AI-native cybersecurity startup Job Description: You will join as a founding engineer building an AI engine that prioritizes cybersecurity threats th ...

Full Stack Engineer (.NET/Java) Cloud & API Innovator

SKY is seeking a cloud services developer to join their Content Technology and Innovation team in Greater London. In this role, you will collaborate on building and enhancing Cloud-based applications while supporting production services. The ideal candidate should have extensive knowledge in .NET (C#) and Jav ...

Full Stack Engineer — Build, Own & Scale with AWS

Requirements You have a few years' experience with building web apps having designed and implemented features from start to finish (ideally full-stack, using Typescript and AWS) ,You focus on having a high impact. You've spearheaded the engineering of critical systems before, working ...

Kotlin Full Stack Engineer: AI Tooling & Scaled Platforms

Salt Digital Recruitment is looking for a Full Stack Engineer in Greater London to help build secure and high-performance products. You will work across Kotlin backend services and React/TypeScript frontends, contributing to modern CI/CD pipelines and AI tools. The ideal candidate has strong skills in ...

Full Stack Engineer (London) Python, AWS, Vue/React

A leading tech recruitment agency is offering a Full Stack Developer Opportunity in London. The successful candidate will design and implement services in Python and collaborate on infrastructure maintenance in a dynamic, agile team. They must have at least 4 years of experience and the right to work in the UK. ...

Senior Full Stack Engineer — Trading Platform (React/TS)

A leading enterprise in financial technology is seeking a Senior Full-Stack Engineer to join their trading platform program in London. The ideal candidate has over 8 years of experience and expertise in TypeScript, Node.js, and React. You will collaborate with senior engineers to enhance performance and reliabil ...

Senior TS Full Stack Engineer — Vue/Node, Remote

A leading SaaS company in the UK is seeking a Fullstack Engineer to build and ship TypeScript product features. You will own product areas from discovery to delivery, balancing speed and quality. The ideal candidate has extensive JavaScript/TypeScript experience and is comfortable working across the stack while ...

Senior Full Stack Engineer: Build Exonaut for Defense

4C Strategies is seeking a senior full stack engineer to contribute to building new parts of Exonaut, a military training management software. The role emphasizes end-to-end development, from user interface to backend integration, with opportunities for innovation in a fast-growing defense environment. <p ...

Associate Full Stack Engineer: AI Powered Travel UX

A leading travel technology company in Manchester is seeking an Associate Software Engineer to contribute across the full stack. This role involves building high-performance web and mobile applications using React and Kotlin, while also implementing AI-driven features. The ideal candidate has a passion for learn ...

VP Full Stack Engineer (Python/Java) – Hybrid Finance

Citibank (Switzerland) AG in London seeks an accomplished Full Stack Engineer (VP) to join our Strategic Equity Solutions team. You will develop robust software solutions that enhance trader workflows, collaborating closely with business stakeholders. Ideal candidates should have strong backend languag ...

Senior Full Stack Dev: Computer Vision & Python Expert

IC Resources is seeking a skilled Full Stack Developer located in Northampton, UK. The ideal candidate will have expertise in Python, Flask, and Django, with a solid track record in full stack development. A strong understanding of computer vision algorithms and familiarity with libraries such as OpenCV is essen ...

Founding Full Stack Engineer – Equity in Enterprise AI

A tech startup seeks a Full Stack Engineer to transform a prototype into a production-grade enterprise SaaS platform. As the first full-time engineer, you will have significant equity and work closely with an expert founding team. Key responsibilities include building a secure backend, developing a user interfac ...

FinTech Backend/Full Stack Dev — Hybrid/Remote, Payments

A growing FinTech company in Greater London is seeking a passionate FinTech Developer to create secure, scalable financial applications. You will be responsible for developing payment systems, integrating banking APIs, and ensuring compliance with data protection regulations. The ideal candidate has 3 to 6 years ...

Full Stack GIS Engineer — Hybrid, Public Sector Impact

Informed Solutions is seeking a Full Stack GIS Developer to engage in developing innovative digital solutions that aid complex public sector challenges. This role emphasizes collaboration and offers opportunities to work on high-profile projects while leveraging technologies like .NET, Java, Python, AWS, and ...

VP Full Stack Engineer (Kotlin/Python) – Hybrid & Growth

Citigroup Inc. is seeking a Full Stack Engineer (Kotlin and/or Python) at the VP level to design and develop innovative solutions within Equities Technology. In this role, you'll enhance trader workflow tooling and engage with business users globally. You will have the autonomy to influence technology decisions ...

Full Stack Engineer (Kotlin and/or Python) – VP

For additional information, please review .**Full Stack Engineer (Kotlin and/or Python) – VP**Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating ...

Full Stack Engineer Java in London Solirius Reply

Required Experience The ideal candidate should have commercial experience in some or all of the following: Substantial experience as a hands‑on Full Stack Engineer Java 7/8 to current Applied knowledge of front end frameworks (Angular, React, or other similar framewor ...

DV Cleared Full Stack Engineer – Secure Gov Projects

Experis UK is looking for experienced Full Stack Developers to support critical Defence & Security projects in the UK. This hybrid role involves designing, developing, and deploying secure web applications. Candidates should have experience in Agile methodologies and secure coding practices. You will w ...

Full Stack Software Engineer – Java/Spring (Onsite UK)

A leading aerospace and defense company in the UK seeks a Software Engineer to join its teams in various locations. This full-time role involves designing and building software for critical projects in a cross-functional team environment. Candidates should have full stack experience, Java development skills, and ...

SC Cleared Full Stack Engineer — Secure Tech, Hybrid

Searchability is looking for a Software Engineer to join their engineering team in Farnborough. The role involves developing secure technology solutions while collaborating across the software development lifecycle. You will work with modern frameworks and backend systems to deliver quality software. S ...

Senior Full Stack Engineer: C#/.NET & React, Hybrid

A global tech company is seeking a Full Stack Software Engineer with strong C# .Net and React skills, offering a hybrid working arrangement in Cambridge. You will design and develop data-centric software, working within an Agile team. The ideal candidate should have experience with Azure, Snowflake, and SQL, alo ...

Senior Full Stack Engineer: React & Python, Cloud Native

A leading tech scale-up in the United Kingdom is searching for a Senior Full Stack Engineer with expertise in React and Python. The successful candidate will develop flagship products, collaborate closely with cross-functional teams, and influence the technical direction. Benefits include a competitive salary ra ...

Remote Full Stack Engineer: Impactful Tech for Good

A tech-focused recruitment company is seeking a Full-Stack Developer to join a mission-oriented team. The role involves delivering complex, high-quality solutions while improving production systems. Candidates should have strong experience in C# .Net, a background in Agile methodologies, and be comfortable with ...

Full Stack Software Engineer — Healthcare Tech (Real Time)

Tussell Limited in Leeds seeks Software Developers passionate about programming to contribute to a global digital healthcare solution. You will be part of an agile team working on systems accessed by thousands of concurrent users. The role involves functional design, full stack development, and perform ...

Senior Frontend Engineer / Full Stack Product Engineer Energy

About the Role Our client is hiring a Frontend Engineer / Full Stack Product Engineer to help build the software that their customers interact with directly, as they continue to scale their product and technology function. We have already recruited 3 individuals to the company and are pleased to ...

Staff Software Engineer, Full Stack (m/f/d)

Staff Software Engineer, Full Stack (m/f/d) London, England, United Kingdom About the Company Affinidi is a technology company dedicated to changing data ownership for good. We empower businesses and individuals with control and ownership of their data, with a compreh ...

Senior Full Stack React/Node Engineer (Remote & Flexible)

A growing technology firm in Brighton seeks a Senior Full Stack Engineer to design and maintain high-performance applications. The ideal candidate has extensive experience in TypeScript, Node.js, and React, and is motivated to work in a fast-paced environment. Key responsibilities include collaborating on techni ...

Lead Staff Engineer Full Stack SaaS (TypeScript/Node)

A leading UK-based SaaS company is seeking a Staff Engineer / Principal Engineer / Lead Engineer to join their hybrid team in Portsmouth. This role involves leading the development of customer-facing products using modern technologies such as NodeJS and TypeScript, in a collaborative environment. With a focus on ...

Software Engineer – Full Stack RF Data Systems (Hybrid)

An innovative firm is seeking a skilled software engineer to join their team in developing advanced RF sensor systems. You will play a crucial role in the entire software development lifecycle, focusing on Windows and Linux applications that facilitate data communication from remote hardware. This position offer ...

Full Stack Engineer Hybrid EM | Tech4Good | EV charging

A mission-driven tech organization based in the East Midlands is seeking a Full Stack Engineer. You will develop applications using React and TypeScript, ensuring high engineering standards and working within a collaborative team environment. This role offers a hybrid work model with impactful projects focused o ...

Full Stack .NET Engineer (Azure, MAUI) – Hybrid UK

A leading Financial Services company is seeking a .Net focused Full-Stack Developer to join their team in Maidstone. This role involves designing and developing business applications using modern technologies like C# and Azure, along with mentoring new team members. The ideal candidate will thrive in an Agile en ...

Senior Full Stack Engineer (React/TS) – Cross‑Platform

TechBiz Global GmbH is seeking a Senior Full-Stack Developer in Birmingham, United Kingdom, to contribute to a dynamic team and work on exciting projects. Your responsibilities will include developing cross-platform interfaces using React, refactoring components, and ensuring performance optimisation. ...

Full Stack Fintech Engineer (TypeScript) Real Time Platform

Kalpa Group is seeking a full-stack engineer in Central London to help develop an innovative fintech platform. This role focuses on integrating investment operations and reporting into a cohesive product ecosystem. The ideal candidate should have strong TypeScript skills, familiarity with React, and en ...

BXTI Liquid Credit, Full Stack Software Engineer, Associate

Overview Blackstone is the world’s largest alternative asset manager, managing $1.1 trillion in assets across multiple investment vehicles. The Blackstone Technology & Innovations (BXTI) team builds systems to support risk management, efficiency, and transparency across the firm and its portfolio ...

Hybrid VP Full Stack Engineer — Equities Tech Innovator

Citi is seeking a Vice President (VP) level developer to join the Strategic Equity Solutions team in Greater London. You'll design and develop high-performance software solutions that enhance trader workflow. With a focus on collaboration, you'll work closely with business stakeholders and contribute to innov ...

AI Driven Full Stack Engineer | RAG & LLM Specialist

Proficiency in Full-Stack Development Proficiency in building modern, full-stack applications with back end development in Python, Node.js, or Java, and front end development with frameworks like React, Angular or Next.js. Experience with AI Solutions Understand and have implement ...

Remote Senior Full Stack Engineer Equity + AI Impact

Cogna, an ambitious early-stage startup in Greater London, seeks a Full-Stack Software Engineer. You will define and maintain backend architecture and APIs while developing frontend interfaces. With at least 8 years of experience, you'll thrive in a fast-paced environment, building scalable microservices using m ...

Owner First Full Stack Engineer for AI Tools

Aperture is seeking a serious engineer to own the Aperture OS codebase. This role demands end-to-end feature development, API integrations, and a strong understanding of performance marketing tools. We're a remote-first team focused on impact, allowing you to work flexibly while ensuring high-quality o ...

Full Stack Software Engineer — AWS Fusion Platform, London

A leading market infrastructure provider in London is seeking a Software Engineer to join a new team working with AWS to build the next generation of the Fusion Platform. This role involves supporting technical delivery across disciplines such as development, testing, and dev-ops. Ideal candidates will be proact ...

Junior Java Full Stack Engineer for Digital Transformation

Capgemini is seeking a Junior Java Full Stack-Associate Consultant in London to drive digital transformation projects. The candidate will write clean code and collaborate in multi-disciplinary teams, translating client visions into innovative solutions using technologies such as Java, JavaScript, and Spring Boot ...

Full Stack Web Dev — DeFi, Solana, Paris Relocation

A blockchain innovation startup based in Greater London is seeking a skilled Full-Stack Web Developer to join their pioneering team in Paris. This role focuses on building a secure decentralized options trading platform using React, Node.js, and a deep understanding of blockchain technology. The ideal candidate ...

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    Full Stack Javascript Developer Jobs in United Kingdom Job Search Guide, Trends and Insights