2,439,857+ Full Stack Java Developer Fixedterm Contract Jobs in UK — Top Companies Hiring June 2026

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Full Stack Engineer Cardiff, London or Remote (UK)

Role Overview We’re on a mission to make money work for everyone. We’re waving goodbye to the complicated and confusing ways of traditional banking. With our hot coral cards and get‑paid‑early feature, combined with financial education on social media and our award‑winning customer servic ...

Senior JS/TS Full Stack Engineer Scalable Systems

RedTech Recruitment is looking for a hands-on software engineer in Peterborough to work on scalable applications across frontend and backend. The role emphasizes collaboration and innovation, allowing engineers to impact real-world projects. With an expected on-site presence of 5 days a week, candidate ...

SC Cleared Full Stack Engineer Azure, Node & React

SR2 is seeking experienced developers for a long-term rolling contract in London. The role involves building and supporting Azure-based platforms within a critical digital service programme. Candidates must have active SC clearance and strong commercial experience in Node, TypeScript, and React. You wi ...

SC Cleared Full Stack Engineer — Azure/Node/React

SR2 REC LTD is seeking a full-stack developer with active SC clearance for a long-term rolling contract. You will join an agile team to build and support a secure Azure-based platform. The ideal candidate has strong experience with Node, TypeScript, and React, along with good understanding of CI/CD and ...

Full Stack Product Engineer: Ship High Impact APIs

Niulix seeks a skilled full-stack engineer to develop and maintain innovative applications. The ideal candidate will have experience with both frontend and backend technologies, particularly TypeScript, React, Node.js, and some Rust. Knowledge of cloud services like Azure or AWS/GCP, and containerizati ...

Full Stack Engineer ($100K $250K + Equity) at Solveintelligence

Job Title Full-Stack Engineer (Back-End Leaning) Salary £80k-£200k+ + Equity Company Description Solveintelligence.com is a $55M-funded London AI startup backed by Y Combinator and Microsoft, building generative AI for the $200B+ patent industry with 8-figure A ...

Full Stack Engineer (£70k–£80k + Equity) at Vitruehealth

Job Title Full Stack Engineer Salary £70k–£80k + Equity Company Description Fast-growing health-tech startup backed by leading UK investors with £1M ARR Job Description Join a lean, high-velocity team of 16 building computer vision technology ...

Founding Full Stack Engineer for AI Native Marketplace

Job Search Place Limited is looking for a Full Stack Engineer to join yhangry, the UK's largest private chef marketplace. This role offers the opportunity to architect an AI-native platform while shaping technical strategy as part of a founding team. The ideal candidate will have 3-7 years of experienc ...

Full Stack JS Engineer for Secure ServiceNow Apps

NCC Group is looking for a Full Stack JavaScript Developer in Greater London. This role involves designing and maintaining secure applications specifically within the ServiceNow platform while collaborating with various stakeholders. The ideal candidate should have strong expertise in JavaScript, NodeJ ...

Founding Full Stack Engineer — AI Consumer Platform (Stealth)

A cutting-edge technology startup in London is seeking a Founding Full Stack Engineer to lead the development of an AI-powered platform aimed at transforming consumer decisions. The role requires a strong background in both frontend and backend systems with a focus on product development and learning. Competitiv ...

Senior Full Stack Engineer – HealthTech (React/TS/Node)

A leading HealthTech company in London seeks a Senior Full Stack Engineer to develop scalable, cloud-native products. The ideal candidate has over 5 years of experience with React, Typescript, Node.js, and AWS, working in data-sensitive environments. The role involves mentoring engineers and ensuring high engine ...

Senior Full Stack Engineer Hybrid, Drive Insurance UX

Hybrid: 2 days per week in our Tower Bridge office Tempcover are at the forefront of the fast‑growing world of short‑term insurance. Our mission is to make car insurance flexible, quick, and easy for drivers. We’ve sold millions of policies that have helped drivers get where they need to go ...

Senior Full Stack Engineer – Build Next Gen Connectivity

A leading tech recruitment firm in Greater London seeks a Full Stack Engineer to join their innovative team. In this role, you will tackle end-to-end challenges, manage product aspects, and ensure the best solutions for product development using TypeScript, React, and Node.js within an AWS environment. This posi ...

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

A leading technology company is seeking a Senior Full-Stack Engineer to enhance their trading platform in London. This role offers the chance to take ownership of features and work in a collaborative team environment. Candidates should have extensive experience in TypeScript, Node.js, and React, with strong skil ...

Senior .NET Full Stack Engineer Fintech, Hybrid UK

A rapidly growing payments technology company in London is seeking a Senior Full Stack .NET Engineer to enhance their team. This pivotal role involves designing cloud-native applications and integrations, with strong focus on .NET Core, Microsoft Azure, and SQL. The ideal candidate has 5+ years of experience and ...

Senior Full Stack Web Engineer – Tiger Team Lead

Catapult Sports is seeking a Senior Full-Stack Software Engineer to lead the transition to modern web applications. This role involves productizing core utilities, innovating workflows, and establishing engineering standards while mentoring peers. The ideal candidate will have deep expertise in React, ...

Senior Full Stack Engineer — Lead AI Powered Applications

BlackRock, Inc. is seeking a highly skilled senior full stack engineer to join our dynamic team in Greater London. The ideal candidate will have a robust technical background in Typescript, React, NextJS, and Python, leading projects that are critical to our operations. The role involves designing high ...

Senior Full Stack Engineer TypeScript/React & .NET, Cloud

JSS is seeking a skilled full-stack developer with solid experience in both frontend and backend development. The ideal candidate will have strong expertise in TypeScript/React and C#/.NET, along with a profound understanding of building scalable applications and RESTful APIs. Candidates should also be ...

Principal Full Stack Engineer — Hybrid, Mentoring at Scale

A UK leading automotive marketplace is seeking a Principal Full Stack Engineer to design scalable systems and mentor teams. This hybrid role offers a salary range of £60,000 to £80,000, with additional share awards and extensive benefits. The ideal candidate will have strong Java and Spring Boot expertise, as we ...

Senior / Staff Full Stack Software Engineer (Partner Platform)

Staff Backend Software Engineer Addepar is seeking a Staff Backend Software Engineer to join our Partner Platform team—one of the most cross‑functional, high‑impact groups in our organization. This team works across engineering, operations, and product to build scalable solutions on top of Addepar ...

VP, Full Stack Engineering — Build Secure, Scalable Systems

BNY, a leading global financial services company, is seeking a Senior Vice President, Full-Stack Engineer to lead high-impact engineering teams in London. The role involves owning end-to-end delivery of mission-critical software, raising engineering standards, and collaborating with product and business stake ...

Senior Full Stack Engineer: Azure, Hybrid in Newcastle

MHR is looking for a Full Stack Software Engineer to join their team in Newcastle. You will design, develop, and maintain scalable software solutions in a creative environment while working with cutting-edge technology. This role offers the chance to enhance your skills and drive impactful innovation. ...

Senior Full Stack Engineer for AI Procurement Platform

A growing tech startup in Greater London is looking for a Senior Software Engineer to join their team. The company is rapidly scaling and seeks someone experienced in full-stack development, especially with Typescript and AWS. Candidates should be prepared for a hands-on role with high impact on product features ...

Senior Software Engineer, Content Agent Full Stack & AI

A pioneering content technology firm in Greater London is looking for a Senior Engineer for their Content Agent. In this role, you'll engage in full-stack product work using TypeScript and React, contributing to the development of AI-powered systems that handle structured content. You’ll collaborate closely with ...

Senior Software Engineer Full Stack (React/ASP.NET Core)

Java Script Works is looking for a Senior Software Engineer based in London, United Kingdom. The ideal candidate should have strong knowledge of ASP.NET Core and experience with frontend frameworks such as React and Vue.js. This full-time position offers a competitive compensation package. Please note that visa ...

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 ...

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 ...

Full Stack AI Builder for Production Agent Systems

Fleek is looking for a Full-Stack Builder to join our team in London. In this role, you will collaborate with our AI and operations teams to create tools that streamline our processes. The ideal candidate has 3-5 years of experience in engineering, strong full-stack skills, and a deep understanding of AI technol ...

Senior Python Full Stack Dev (Flask) | AWS | Hybrid

Jackson Hogg is supporting a client seeking a Senior Python Full Stack Developer in Newcastle upon Tyne. This hybrid role focuses on web application development with a strong emphasis on utilizing Python Flask and Jinja 2. Candidates should have experience in leading complex web applications and deploying softwa ...

Senior Full Stack .NET Engineer – Malta (Relocation Covered)

A technology consulting firm is seeking a Custom Applications Senior Analyst Programmer to join their Consultancy Services team. This is a full-time role based in Malta with professional development opportunities and relocation support provided. Ideal candidates will have 5+ years of experience with the Microsof ...

Full Stack AI Engineer – Legal Tech, London, Equity

PassFort is seeking a Full Stack Software Engineer to help build and scale their AI-driven legal systems in London. You will work closely with the founding team to architect and develop key features, while contributing to a vibrant startup culture. The role requires strong software engineering skills, ...

Senior TypeScript Full Stack Engineer (Hybrid) — Trading Platform

A large enterprise is seeking a Senior Full-Stack Engineer for their trading platform in London. The role involves designing and maintaining high-performance features using TypeScript, Node.js, and React, while collaborating with clients and a team of engineers. The opportunity includes substantial training supp ...

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 ...

BXTI Liquid Credit, Full Stack Software Engineer, Associate

Blackstone is the world’s largest alternative asset manager. We seek to create positive economic impact and long-term value for our investors, the companies we invest in, and the communities in which we work. We do this by using extraordinary people and flexible capital to help companies solve problems. Our $1.1 ...

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 ...

AI First Full Stack Engineer, In House Platform

Pubity Group is searching for a Full Stack Developer to lead the in-house development of Pubity Suite, a vital platform for social publishers. You will take ownership of an established product, ensuring its growth and integration of AI features. The ideal candidate will have 4+ years of experience in s ...

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: Build Scalable Features (TS/React)

Blink - Employee Experience Platform is seeking a Full Stack Engineer in London. This role involves designing and maintaining applications using TypeScript, Node.js, React, and SQL, while collaborating with support teams. Ideal candidates are self-starters with experience in full-stack development and strong ...

Hybrid Full Stack Engineer | Build Scalable Web Apps

Brilliantbrandings is seeking a Full-Stack Engineer to develop high-quality web applications, ensuring UI consistency and quality throughout. The role involves creating software building blocks for both client and internal products, exercising standardization in development processes. The ideal candida ...

Full Stack Engineer: AI HealthTech | London | Unlimited PTO

A pioneering fitness technology company in Greater London is looking for a Full Stack Software Engineer to join its high-performing team. You will develop innovative features for health coaching products, impacting thousands of users daily. Ideal candidates have experience with AI-assisted development and full s ...

Full Stack Engineer – Equity & Ground‑Floor Insurtech Role

Jack & Jill is seeking a Full Stack Engineer to be a key member of its engineering team in London, UK. You will work on building innovative insurance technology that integrates seamlessly into retail experiences. The ideal candidate will have at least 2 years of experience in Ruby on Rails or Python, with a stro ...

Staff Full Stack Engineer Lead, Build & Scale Impact

A dynamic fintech company based in London is seeking an experienced engineer to lead technology projects and mentor team members. You will work closely with the founding team to shape technical architecture and delivery excellence. Ideal candidates have a strong background in JavaScript technologies and excel in ...

Full Stack C#/.NET Engineer Enterprise Tech Platform

A leading tech firm in the UK seeks a Full Stack C# Developer for its Enterprise team. You will design and maintain high-quality C#/.NET solutions and build scalable services that support multiple business streams. The ideal candidate has strong experience in C# and AWS, along with the ability to work in a fast- ...

Senior Full Stack Engineer: Architect & Ship Web Features

Legora, based in Greater London, is seeking a Software Engineer to help build and ship products that empower legal professionals globally. You will take ownership of your codebase, ensuring high-quality, secure, and timely development. The ideal candidate has several years of experience in full stack d ...

VP, Full Stack Engineering – Lead Scalable, Secure Systems

A leading financial services firm is seeking a Vice President, Full Stack Engineer to lead high-impact engineering teams in London. This role requires proven leadership in software engineering, deep Java expertise, and strong DevOps practices. The ideal candidate will own the end-to-end delivery of critical soft ...

Full‑Stack .NET Engineer (Hybrid) – Secure Pharma Platforms

Copley Scientific is seeking a Full Stack .NET Developer to enhance its software platform. This role offers opportunities to develop secure and high-quality software solutions in a collaborative environment. The successful candidate will be responsible for writing maintainable code, collaborating with ...

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    Full Stack Java Developer Fixedterm Contract Jobs in United Kingdom Job Search Guide, Trends and Insights