1,937,552+ Lead Software Engineer Full Stack Java React Jobs in UK — Top Companies Hiring July 2026

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Full Stack PHP Symfony Engineer – 6 Month Contract

Difrent is seeking an experienced Full Stack Developer with PHP Symfony experience to join their team in London. You will engage from conception to completion in complex digital projects, ensuring both technological viability and aesthetic appeal. Your role will encompass implementation and enhancement ...

Senior Python Full Stack Engineer for FinTech Data

Validus Risk Management is seeking a Python Software Engineer to enhance the Validus Horizon platform. In this role, you will lead the delivery of high-impact features, ensuring robust solutions while collaborating with cross-functional teams. The ideal candidate has 3-5 years of software development e ...

Hybrid Cloud Full Stack Engineer (C#/.NET, Angular)

myairops in Farnborough is seeking a Software Engineer to work on cutting-edge cloud technologies including C# .NET Core and Angular. This role is ideal for those looking to thrive in a collaborative environment with a focus on continuous integration and delivery practices. You will be involved in desi ...

Full Stack Engineer (£120k £130k + Equity) at Aisy

Job Title Full Stack Engineer Salary £120k-£130k + Equity Company Description Aisy.ai is a $2.3M seed-funded cybersecurity startup building an AI-native vulnerability management engine. Founded by the former head of Hacker R&D at HackerOne, the team is backed b ...

Senior Frontend Engineer — AI‑First, Full‑Stack, AWS

Rex Technologies GmbH is seeking a Senior Front End Developer to join its Clearing Technology team in London. The role requires expertise in React, TypeScript, and a full-stack capability to create secure web applications. You will drive an AI-first approach while ensuring compliance with FCA regulatio ...

Full Stack PHP Engineer: Cloud, Go & CI/CD

RELX is looking for a developer to contribute to customer-facing features across a modern technology stack. You will collaborate with experienced engineers to deliver high-quality solutions and enhance product delivery through continuous improvement. The ideal candidate has knowledge of web application ...

GenAI Full Stack Engineer – Ground Floor Startup, London

Jack & Jill, a Tier 1 investor-backed startup located in Greater London, is seeking a Full Stack Engineer. This role offers an exciting opportunity to shape a generational product that accelerates GenAI adoption using cutting-edge cloud technologies like TypeScript and Next.js. As a key team member, yo ...

Full Stack Engineer — EdTech SaaS Shaping School Recruitment

United States Digital Space LLC is seeking a Full Stack Software Engineer to join their development team. The role involves developing features for a rapidly growing EdTech SaaS platform that connects schools and candidates across the UK. The ideal candidate will have at least 3 years of experience in ...

Full Stack Engineer – ESG Data Platform (Hybrid UK)

Motive Partners is hiring a Full Stack Engineer in London to develop core tooling for the Companies team. This high-impact role involves close collaboration with product and design teams, taking ownership of initiatives, and scaling the platform effectively. Applicants should have 4+ years of experienc ...

Full Stack PHP Engineer: Cloud, Frontend & CI/CD

LexisNexis Risk Solutions in Cardiff is looking for a passionate developer to join their team. You will contribute to developing customer-facing features using modern technologies, working closely with experienced engineers while enhancing your technical skills. Your role will include writing features ...

Full Stack Engineer Own Live SaaS Pricing Tools

Clariti AI is seeking a Full Stack Engineer with a strong front-end focus to enhance client-facing pricing tools. In this role, you will design and develop features for a SaaS product used by retail banks, ensuring usability, performance, and reliability. The ideal candidate will have a minimum of two ...

Full Stack ML Engineer: Build & Deploy Intelligent Apps

LexisNexis Risk Solutions in Greater London seeks a Full-Stack Machine Learning Engineer to build and deploy ML-powered tools for fraud and identity analytics. The role includes developing APIs, integrating ML models, and collaborating across teams. Ideal candidates have over 4 years of relevant experi ...

Senior Full Stack Engineer: Build AI Driven Insurance

Corgi Insurance is looking for a Senior Full Stack Software Engineer in London. This role involves designing and developing the systems crucial to their insurance operations. You will own significant technical projects, collaborating closely with leadership and product teams. The ideal candidate has ov ...

Senior Full Stack Engineer, Cross Border Payments Platform

United States Digital Space LLC is looking for a Senior Full-Stack Engineer in Bracknell, UK. This role involves owning features across the stack to manage multi-currency payments, mentoring mid-level engineers, and ensuring production reliability. Candidates should have 6+ years in web applications, strong t ...

Senior Full Stack Engineer: Data Driven APIs & Cloud

Skills and Experience Particularly strong in Kotlin or Java. Experience in designing and implementing data-driven APIs. Exposure to frontend development, especially React.js, Tailwind, REDUX, and Typescript. Past project experience with large-scale web services. </l ...

Senior Full Stack Engineer AI Driven Product Delivery

Francisco Partners is seeking a Senior Fullstack Engineer to accelerate the development of AI-native products and workflows. This role involves designing and maintaining high-quality software while collaborating closely with Product, Design, and AI teams. Key responsibilities include implementing scala ...

Founding Engineer (Full Stack / SRE) at Asymmetric Security

Job Title Founding Engineer (Full Stack / SRE) Salary Not Disclosed Company Description Asymmetric Security is a well-funded, early-stage AI-native Digital Forensics and Incident Response startup building automated investigation platforms designed to accelerate ...

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 ...

Full Stack AI Engineer (£70,000 + Equity) at CreateTOTALLY

Job Title Full Stack AI Engineer Salary Up to £70,000 + Equity Company Description CreateTOTALLY - AI-powered creative automation for Figma and Adobe Job Description As a Full Stack AI Engineer at CreateTOTALLY, you will build and ship feature ...

.NET Full Stack Engineer: ASP.NET Core, Azure, Remote

Noir is looking for a .NET Developer to join their team in Hemel Hempstead, Hertfordshire. This role involves work with a contemporary tech stack including .NET, C#, and Azure. You will collaborate closely with small teams to deliver innovative solutions. The position offers fantastic benefits like pri ...

Full Stack Engineer (£60k £80k + Equity) at Vitruehealth.com

This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Full Stack Engin ...

Full Stack Engineer for Health AI Platform (Equity)

A health technology firm is seeking a Full Stack Engineer in London to build innovative AI-driven solutions tackling musculoskeletal pain. The ideal candidate has over 3 years of full-stack engineering experience with .NET and Vue.js, contributing to a clinically validated platform. You’ll influence technical de ...

Full Stack Product Engineer — AI Powered Rental Platform

The Flex is seeking a Full-Stack Product Engineer to build and automate innovative solutions in the real estate sector. In this role, you will transform challenges into impactful software, working closely with founders to create user-centric applications. You'll also have the opportunity to implement AI-power ...

Full Stack AI Engineer: Azure & DevOps for Production

Lorien is seeking a Full Stack AI Engineer for an initial 3-6 month contract in Theale, England. This hybrid role involves enhancing AI-powered platforms on Microsoft Azure and developing production-ready systems in a fast-paced agile environment. The ideal candidate will have full stack engineering ex ...

Senior Full Stack Data Engineer — ML/AI & FinTech

Apprize Technology Solutions is looking for a skilled developer to undertake full-stack development with a focus on machine learning and AI applications. Your responsibilities include collaborating with established teams and ensuring quality code delivery. The ideal candidate has over 5 years of experi ...

Senior Full Stack Engineer: AI Growth & Stock Options

Be-IT is hiring multiple Senior Full Stack Engineers for a Series A Scale Up in Central London. This role offers the chance to work closely with product and contribute to meaningful projects using modern tech stacks, including React and TypeScript. The ideal candidate will thrive in a startup environme ...

Senior Full Stack Engineer: Build Scalable APIs & Services

Causaly, located in Greater London, is looking for a Senior Fullstack Engineer to join their team. This position involves designing and building scalable, reliable web applications, and collaborating with product and research teams to develop new features. The ideal candidate will have a Bachelor's deg ...

Senior Automation Engineer – Full Stack API & UI Testing

Java Script Works in Northampton is looking for skilled individuals with experience in designing and implementing test automation frameworks for both front-end and back-end applications. Candidates should be proficient in Java and JavaScript, with experience in API and integration testing. The ideal ap ...

Senior Full Stack Engineer • .NET/Python + Data & Cloud

EXL is seeking a skilled Full Stack Developer with a focus on application development, data architecture, and infrastructure solutions. Located in London, this hybrid role requires strong experience with .NET, .NET Core, and Python, alongside a solid understanding of the insurance sector. The position emphasi ...

Mid Full‑Stack Search Experience Engineer – Hybrid (UK)

On the Beach in Manchester is looking for a Software Engineer IC2 to design modern full-stack applications that enhance customer experiences for discovering holidays. You’ll work collaboratively with cross-functional teams to deliver high-quality solutions that drive business performance. This full-tim ...

Senior Full Stack Engineer AI Driven Production Tools

A leading technology consulting firm in Greater London is looking for a Senior Full-Stack Engineer to drive the development of AI-enabled systems in Production Management. Responsibilities include designing scalable applications and optimizing mission-critical systems, while fostering a culture of Agile practice ...

Senior Full Stack Engineer I (Growth & Marketing Technology)

We're putting together a talented team to build the #1 training platform for Runners We help everyday runners become outstanding by building an incredible app providing world‑class training, coaching and community for everyone, whether you're improving your 5k time or training for your firs ...

Senior Full Stack Engineer — Hands On Leader, Flexible

A tech company in Greater London seeks a Principal Full-Stack Engineer with over 15 years of experience in building complex web applications. The ideal candidate will be an expert in PHP and modern JavaScript frameworks. Responsibilities include managing engineering problems, refactoring codebases, and participa ...

Senior Full Stack Product Engineer | AI Native, London

GetGround is seeking a Product Engineer to join our London team. The role involves building user-facing AI-native products, collaborating with cross-functional teams. Candidates should be Fullstack Engineers comfortable in both frontend and backend development, and excited about AI tools. The position offers a h ...

Senior Full Stack Engineer — AI Platform, Hybrid & Equity

Who We Are PAIR is a fast-growing AI adoption startup on a mission to help professionals and teams harness AI to do their best work. Our platform delivers personalised, AI-powered learning experiences and adoption support that help organisations rapidly harness AI at scale. <st ...

Senior Full Stack Engineer — AI Driven Home Healthcare

Heim is seeking a Senior Full-Stack Engineer to build AI-powered systems that improve home-based healthcare delivery. The role requires over 6 years of experience; candidates must demonstrate genuine full-stack capabilities and have a proven track record in delivering production software. Responsibilities includ ...

Senior Full Stack Engineer for Pre Commerce Platform

A pioneering e-commerce platform is seeking a Senior Full Stack Engineer to develop impactful features for their pre-commerce platform. You will work across frontend and backend systems, collaborating closely with a small engineering team. The role requires 5+ years of experience in both frontend and backend dev ...

Senior Full Stack Engineer — AI Driven Fintech, Equity

A leading fintech startup in London is seeking a Senior Full-Stack Engineer to revolutionize cross-border finance. You'll own the technical architecture of a platform, building infrastructures for stablecoin payments and AI-driven financial intelligence. Ideal candidates have 5+ years of experience in full-stack ...

Senior Full Stack Engineer for Growth & AI Marketplace

A leading secondhand fashion marketplace in London is seeking a Senior Full Stack Engineer to enhance user experiences across their platform. You'll work closely with product and design teams to redesign key user journeys, own feature development from problem to production, and analyze data-driven growth experim ...

Full Stack Engineer for Mission Critical Security Apps

A leading technology and engineering firm in Manchester is seeking a Software Engineer to develop mission-critical solutions for National Security clients. You will work on innovative technologies, ensuring security while writing clean, efficient code. Successful candidates will have skills in Python or UI frame ...

Senior Full Stack Engineer (Contract) Typescript / Next.js / Node.js

Overview Job title: Senior Full Stack Engineer (TypeScript / Next.js / Node.js / AWS) Type: Full-time, Contract Location: UK (flexible home, office, or hybrid working) UK offices: Edinburgh, Newcastle, Leeds, Manchester and London Star ...

Senior Full Stack Engineer — Real Time AI & Infra

Sivara GmbH in London is seeking a Senior Product Engineer to join their innovative AI startup. The role involves building intelligent software systems and infrastructure for enterprise-scale workflows, using technologies like Golang and AWS. Candidates should have experience in backend and frontend developme ...

Full Stack Engineer: Build Scalable, User Focused Apps

tombola is looking for a Full Stack Software Developer in Sunderland to enhance applications within their Game Studio. You'll collaborate across engineering, product, design, and QA teams, contributing to user-focused solutions. The ideal candidate will have experience in software development, strong c ...

Full Stack CI/CD Engineer with IoT & Observability

Sivara GmbH is looking for a Full-Stack Developer to work in our London office. The role involves designing and maintaining full-stack applications while collaborating closely with the engineering team. Candidates should have experience in Python, C#, and CI/CD pipelines. This position offers a salary ...

Full Stack Product Engineer — AI Powered, Remote First

The Flex is looking for a Full-Stack Product Engineer to design and build products aimed at improving the renting experience. You will work closely with founders and operational teams to tackle challenges and automate workflows. Your skills will help create impactful features using technologies like Python, R ...

Full Stack ML/GenAI Engineer — Hybrid EdTech Role

Intec Select is seeking a skilled full-stack developer to join a pioneering project for language learning and assessment based in Greater London. The ideal candidate will have experience developing Chat/Messaging applications and a background in AI components. This contract role offers pay up to £475 P ...

Full Stack CI/CD Engineer with IoT & Observability

Sivara GmbH is looking for a Full-Stack Developer to work in our London office. The role involves designing and maintaining full-stack applications while collaborating closely with the engineering team. Candidates should have experience in Python, C#, and CI/CD pipelines. This position offers a salary ...

West London Hybrid Full Stack Engineer – Identity/Commerce

CBSbutler Holdings Limited trading as CBSbutler is looking for a Full Stack Engineer to join their team in West London. The role involves delivering digital transformation for a prominent media company with a focus on enhancing customer experiences across various platforms. Candidates will work on sign ...

Senior Full Stack Engineer – AI Driven Logistics Platform

慨正橡扯 is seeking a Full Stack Engineer to join the M&S Software Engineering team. You will develop and implement robust software solutions to serve millions of customers, focusing on quality and scalability. This role involves mentoring others, providing technical leadership, and ensuring best practices ...

Full Stack GIS Engineer for Public Sector Impact

A digital transformation consultancy in Altrincham is seeking a Full Stack GIS Developer. You will work on innovative digital solutions that impact public services, collaborating with a multidisciplinary team to develop scalable applications. Candidates should possess strong skills in .NET, Java, or Python and h ...

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    Lead Software Engineer Full Stack Java React Jobs in United Kingdom Job Search Guide, Trends and Insights