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

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Full Stack Engineer — Hybrid (London) Climate Impact

United States Digital Space LLC is looking for a Full Stack Software Engineer to join Foodsteps in London. You will contribute to the design, development, and support of impactful applications, working closely with cross-functional teams in an agile environment. The ideal candidate is experienced in Py ...

Customer‑Facing Data & AI Full‑Stack Engineer

United States Digital Space LLC is looking for a Forward Deployed Engineer to lead customer projects related to data and AI. This role involves designing and implementing data architectures, working directly with clients to understand and address their challenges. The ideal candidate has experience in ...

Senior Full Stack Engineer – WealthTech Platform (Edinburgh)

Provntalent is seeking a Senior Product Engineer in Edinburgh to join their growing WealthTech business. You will take on a full-stack role, developing features across frontend applications, backend services, and APIs while contributing to technical and product decisions. This opportunity offers a mode ...

Full Stack Engineer for AI DevTools & Cloud

Barclays seeks experienced Software Engineers in Glasgow to drive the adoption of industry-standard Generative AI development tools. In this role, you will design, develop, and improve software that enhances capabilities for both customers and colleagues, making a significant impact on productivity and qualit ...

Full Stack Engineer — Remote (London) + Equity Options

Tabled Technologies Limited in London is seeking a core development team member to elevate corporate legal services through technology. The role involves assessing product requests, delivering software features, and ensuring high-quality standards. The ideal candidate will have at least 2 years of engi ...

Full‑Stack Engineer (Backend‑Focused) — Flexible Hours

Glot, based in Greater London, is looking for a versatile full-stack developer who is comfortable across AI, backend, and frontend technologies. The team thrives on tackling challenging problems, and a collaborative spirit is crucial. Benefits include a competitive salary, a workplace pension, flexible ...

Full Stack Engineer – Luxury Eyewear Tech Innovator

THE GRADUATE PROJECT LIMITED is looking for a skilled Software Developer to join their team, specializing in bespoke designer eyewear. This role provides a chance to gain comprehensive experience in a prestigious environment. Ideal candidates will possess a 3rd level qualification in Software Developme ...

LangChain AI Engineer – Full‑Stack, GenAI & TDD

Focused is seeking a full stack engineer to leverage expertise in delivering AI-enabled applications. This role emphasizes collaboration with clients and colleagues, focusing on building scalable software solutions while practicing TDD. Ideal candidates should have a strong background in various progra ...

Senior Full Stack Engineer (up to £140k)

Join a small, senior product engineering squad at an AI‑first company building a B2B marketplace for second‑hand clothing. As a Senior Full‑Stack Engineer you’ll primarily focus on front‑end, driving user growth and core consumer experience through web and mobile. The work Own end‑to‑e ...

Senior Full Stack Python/Django Engineer (Remote)

Mongoose Gray is seeking a Full Stack Engineer to work in a fast-paced software environment in Greater London. The role offers a salary of £90,000 per year with benefits and remote working options. Responsibilities include developing front-end solutions with React and Typescript, building scalable back-end syste ...

Senior Full Stack AI Engineer | Hybrid (UK)

A global financial information leader in Manchester is looking for a Senior Software Engineer, Full Stack - AI. The role involves designing and developing ML/AI solutions while working in an agile team environment. You will utilize a modern tech stack and partner with stakeholders to meet business needs. With 7+ ...

Senior Full Stack Engineer Remote & Hybrid Growth

Amdaris in Bristol is looking for a Senior Full Stack Software Developer to join their dynamic team. The role involves building both front-end and back-end solutions, ensuring scalability and security, and contributing to innovative projects. Applicants should have strong Java proficiency and ideally experien ...

Foundry App Engineer — Full Stack, Data Driven

A leading technology company in Greater London is seeking a Full Stack Engineer to develop applications in its data platform. You will work on crafting user interfaces, APIs, and interact with customers to improve product offerings. This role requires 2+ years of frontend software engineering experience, strong ...

Full Stack Engineer — Client Facing & Growth Oriented

A software consultancy is looking for a developer in London to engage with clients and manage projects. You'll collaborate with experienced developers and have opportunities to mentor juniors. The role demands skills in React.js or React Native and Node.js or Python, alongside strong communication abilities. You ...

Remote .NET Full Stack Engineer: Azure & Angular

Noir Consulting is seeking a Full Stack Developer to join a fully remote team in the USA. The role involves developing and maintaining applications using .NET and Angular, optimizing APIs, and collaborating with an agile team. Requirements include strong experience in C# and cloud solutions like Azure. The posit ...

Remote Full Stack Engineer: Build Impactful Features

Reposit is seeking an exceptional Full Stack Engineer to join our Product team. This role offers the chance to define and implement features at a pivotal time in our growth. Responsibilities include driving technical direction and collaborating across teams. The position is remote-first, with monthly meet-ups in ...

Full Stack Engineer (£100k + Equity) at yhangry

Company Description yhangry - YC-backed AI-native marketplace Job Description Join yhangry as the third engineer to rebuild the UK's largest private chef marketplace from the ground up. You will architect a brand-new, AI-native platform for global expansion, moving beyond tradition ...

AVP, Liquid Credit Tech — Full Stack Engineer

Blackstone is hiring an AVP for its Liquid Credit Technology team in Greater London. The role focuses on developing modern fixed-income asset management systems. Candidates should have over 3 years of software development experience, particularly in C#, React, Typescript, and AWS. Responsibilities include buildi ...

Senior Frontend & Full‑Stack Engineer – Banking/Payments

A leading global technology firm in the UK is looking for a FrontEnd Full Stack Developer to create responsive web applications using modern UI frameworks. In this role, you will collaborate with designers, implement backend services, and ensure the security of applications. Candidates should have a strong under ...

Senior Full Stack/AI Engineer (Frontend Leaning)

Senior Full‑Stack/AI Engineer (Frontend-leaning) Core Technical Expertise Deep hands‑on experience delivering full‑stack JavaScript/TypeScript solutions, with strong proficiency in React, Next.js, Node.js, and the broader JavaScript ecosystem. Proven ability to build hig ...

Senior Full Stack Engineer — Fintech Platform, Remote

A growing fintech software company in Greater London is looking for a full-stack software developer with 4-7 years of experience in web development. You'll join a dynamic tech team to optimize and build features for an award-winning web platform using technologies like ReactJS, NodeJS, MongoDB, and AWS. This rol ...

Full Stack Engineer for AI Avatar Platform

A leading AI production studio in Greater London is seeking a Full Stack Engineer to develop innovative applications and systems for digital characters. The role requires 5+ years of full stack experience, working collaboratively in a fast-paced environment, and offering real ownership over projects. You’ll be i ...

Senior Full Stack Engineer — Tech Leader & Architect

A leading consultancy firm in the UK is seeking a Software Engineer to contribute to various exciting projects, particularly Python-focused. The ideal candidate will have a passion for coding, experience in cloud environments like AWS or Azure, and the ability to provide technical leadership while working collab ...

Senior Full Stack Engineer: Remote, Scalable & Secure

A leading technology firm in London is seeking an experienced software engineer specializing in both frontend and backend development to join their team. The ideal candidate will have a commitment to high standards in user experience, privacy, and security. This role offers flexible working options and a compreh ...

Senior Full Stack Engineer in Ireland Blockdaemon

Join Our Technical Team In this role, you'll join forces with a seasoned technical team of senior engineers, all dedicated to bridging the world with blockchain technology. Together, you'll create state-of-the-art applications and high-performance services, shaping the industry's future. Req ...

Senior Full Stack Engineer (+ Equity) at SYSTM

Job Title: Senior Full-Stack Engineer Company: SYSTM - VC‑backed fintech building the stablecoin financial OS Job Description: As the most critical hire of 2026, you will own the technical architecture of a platform revolutionizing cross‑border finance. Working direc ...

Senior Full Stack Engineer — Drive Web Growth

Praktika.ai in Greater London is seeking a Senior Full-stack Engineer to own their web assets, including onboarding and marketing tools. You will drive product decisions using a data-driven approach, with responsibilities covering the entire web stack, from architecture to deployment. Candidates should have exte ...

Growth‑Focused Full‑Stack Engineer — Marketing Tech

A leading training platform for runners is looking for a full stack engineer to join their Growth team. This role involves building marketing technology systems and full-stack features to enhance user acquisition and engagement. The ideal candidate has 3+ years of full-stack experience, strong skills in TypeScri ...

Senior Full Stack Engineer C# £60k Hybrid

Senior Full Stack Engineer - C# - £60k - Hybrid Senior Full Stack Engineer - C# - £60k - Hybrid This range is provided by DigiTech Resourcing. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range C# Senio ...

Founding Full Stack Engineer – Python, Scraping & Automation

CloudDevs is seeking a Founding Engineer based in the UK to lead the technical development of our AI-driven Hospitality Tech platform. You will build features in Python (Django) and manage high-volume data scraping. The role offers a competitive salary between £70k and £90k, along with equity options of up to 2% ...

Senior Full Stack Engineer — Hybrid (London) + Equity

Oliver Bernard is seeking multiple Full-Stack Engineers to join their growing team in London. In this role, you will take ownership of their platform, collaborating with engineers and design teams to enhance their web application. Ideal candidates will have a minimum of 5 years in Full-Stack roles, wit ...

Senior Full Stack Engineer at LendView, Inc.

Job Title Senior Full Stack Engineer Company Description LendView, Inc. - AI-native property lending platform Location Remote, UK Job Description As the sole engineer driving the product build, you will lead the transition from a traditional S ...

Senior Full Stack Engineer: Growth & Marketing Tech

A leading fitness app company in the UK is seeking a skilled Full Stack Engineer to join their Growth team. This role focuses on developing and maintaining marketing technology systems to enhance user acquisition and retention. The ideal candidate has solid experience with TypeScript and JavaScript, enjoys exper ...

Full Stack Engineer – Cloud Native, Scalable Apps

A leading investment platform in Manchester is seeking a talented Developer to design and support scalable applications. The role requires experience in business-critical platforms and proficiency in React, AWS, and microservices architecture. You will be contributing towards strategic technical decisions while ...

Senior Full Stack Engineer Engineering Southampton, UK

Kaleido is the leading enterprise-grade Web3 platform for blockchain and digital assets in the world. Its full-stack infrastructure includes access to all major protocols and chains, 500+ pre-built services and APIs, event streams, wallets, Web3 storage solutions, and more. Founded in 2017 by early pioneer ...

Senior full stack engineer in Cambridge Techspert

Techspert Job Opening Techspert is a fast-growing technology scale-up with offices across the UK, US, and Chile. We specialize in AI-driven technology to transform how knowledge is indexed, identified, and sourced within the healthcare and life sciences sectors. Position Details This is ...

Senior Full Stack Engineer – AWS Microservices & Greenfield

MCS Group is seeking a Senior Full Stack Engineer in Belfast to join a high-performing team working on a next-generation platform. Candidates should have 5+ years in full stack or backend engineering with expertise in React, TypeScript, and AWS. This role involves owning design and development across a microserv ...

Senior Full Stack Engineer — Hybrid & AI Tools

Pharmacy2U | Certified B Corp in Leeds is hiring a Senior Full Stack Engineer to develop a new single-platform solution in a flexible hybrid role. The position requires experience with .NET, Microsoft SQL, and familiarity with Agile environments. Applicants should have strong skills in API design, React, TypeScr ...

Senior Full Stack AI Engineer (Hybrid—London)

The Python Software Foundation is seeking a Senior Full Stack Software Engineer to enhance research and foundation model development. This role, based in London with a hybrid working model, involves developing full stack applications while collaborating with research scientists and ML engineers. Candidates shoul ...

Senior Full Stack Engineer, Transfers & Client Journeys

Hargreaves Lansdown PLC based in Bristol is looking for a Senior Software Engineer to develop and maintain transfer applications. The role involves working on React frontends and AWS serverless backends, ensuring full delivery lifecycle from development to production. The successful candidate will lead ...

Mid Senior Founding Full Stack Product Engineer

About theOffer Our Client is building the world's first AI-native cybersecurity operating system. As increasingly capable AI systems become part of critical infrastructure, security challenges are evolving faster than traditional solutions can keep up. Our Client is developing nex ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Mid-Senior Full-Stack Engineer to join our dynamic team building AI-native cybersecurity systems. You will own the product end-to-end, collaborating closely with AI engineers and designing scalable systems. Your role will involve developing modern applications with Type ...

Mid Senior Founding Full Stack Product Engineer

About theOffer Our Client is building the world's first AI-native cybersecurity operating system. As increasingly capable AI systems become part of critical infrastructure, security challenges are evolving faster than traditional solutions can keep up. Our Client is developing nex ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Full-Stack Engineer in Southampton to lead product development for an AI-native cybersecurity operating system. You will collaborate closely with AI engineers to integrate cutting-edge technology into reliable systems, ensuring security and performance across platforms. <p ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Full-Stack Engineer in Guildford to build the world's first AI-native cybersecurity operating system. Candidates should have strong experience in TypeScript, React, and Node.js, as well as a proven background in building modern web applications. The role involves end-to ...

Mid Senior Founding Full Stack Product Engineer

About theOffer Our Client is building the world's first AI-native cybersecurity operating system. As increasingly capable AI systems become part of critical infrastructure, security challenges are evolving faster than traditional solutions can keep up. Our Client is developing nex ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Mid-Senior Full-Stack Developer specializing in AI product integrations. You’ll design scalable systems and lead product development end-to-end in a fast-paced environment. The role includes working with technologies like TypeScript, React, and Node.js. The position off ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Full-Stack Engineer to build AI-native cybersecurity products in London. You will own the entire product experience, from front to back, ensuring systems are secure, reliable, and built with cutting-edge technologies like TypeScript, React, and Node.js. The ideal candid ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is seeking a Mid-Senior Full-Stack Engineer to join our client’s innovative team focused on AI-native cybersecurity solutions. This role involves building and maintaining scalable systems while collaborating closely with AI engineers to integrate cutting-edge LLM capabilities. Ideal ...

Founding Full Stack Product Engineer – AI Cybersecurity

C&D Talent Advisory is searching for a skilled full-stack engineer to join a groundbreaking team developing AI-native cybersecurity products. This role involves owning product development from end to end, working with technologies like TypeScript, React, and Node.js, and directly impacting the security infras ...

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