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

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Senior Python Developer

Can you think strategically and connect the dots across projects to shape the bigger picture?Do you thrive in fast-paced, agile environments, enjoy exploring smarter ways of working, and love to collaborate across diverse teams?Are you passionate about continuous learning and building impactf ...

Staff Software Engineer Transport

Summary As part of the M&S Software Engineering team, you’ll be joining a well‑loved historic brand, working on solutions that serve millions of loyal customers and thousands of colleagues. With ethical values that run right through the company’s core and technology leaders that truly understand ...

Lead Software Engineer — ServiceNow Platform & Solutions

A leading global financial services firm is seeking a Lead Software Engineer to enhance and develop technology products within a collaborative team. Responsibilities include executing software solutions, managing a small team, and driving technological advancements. Candidates should have expertise in ServiceNow ...

Lead Software Engineer Autonomous Maritime Systems

A leading engineering firm in the United Kingdom seeks an experienced Software Engineer to design and develop software for advanced autonomous systems. You will engage in the full software lifecycle, collaborating with a multidisciplinary team. Essential qualifications include proven software design experience, ...

Lead Mathematical Software Engineer C++ & Linux

Sivara GmbH is looking for a talented software developer to join their team in England. The ideal candidate will have a PhD or master's degree in a relevant numerate STEM subject along with extensive experience in C++ software development, ideally from C++14 onwards. Responsibilities include designing ...

Principal Mobile Engineer (React Native) – On site London

Justzapp is looking for a Principal Software Engineer specializing in Mobile (React Native) to lead and shape the technical direction of their consumer apps. Based in London, this role is full-time and requires a hands-on approach to building, mentoring, and shipping high-performance mobile features. T ...

Software Engineer

Overview We can offer you the chance to help make the UK a safer place through innovation, working in partnership with government and law enforcement organisations on some of the most challenging data and technology problems out there. As part of our team, you'll be a full-stack developer w ...

Java Software Engineer, Wholesale Credit Risk Analytics Assistant Vice President

**Software Engineer, Wholesale Credit Risk Analytics** We are seeking a skilled and motivated software engineer to join our Credit Risk Technology team. This role offers an exciting opportunity to work on critical risk management systems, developing solutions that support the bank’s stress testing funct ...

Senior Software Developer

The role This is more than a job — it’s a mission. You will be part of a high-impact, collaborative environment, where we expect everyone to live the values and standards of the British Army. Every person in our team plays a critical role in delivering OMNIA’s vision; designing, delivering, and t ...

Java Developer / Java Developer Lead Camunda Workflow Automation

Burgess Hill, UK (Hybrid - 2 days onsite) Contract / We are looking for Java Developers (Mid-Lead level) to support enterprise‑scale workflow automation and digital transformation programmes. This role focuses on backend engineering, workflow orchestration, and scalable enterprise a ...

Enterprise Application Developer AI Trainer

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for proficient programmers to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a ...

Mobile Application Developer (Android) AI Trainer

Join the DataAnnotation team and contribute to developing cutting-edge AI systems while enjoying the flexibility of remote work and setting your own schedule. We are looking for proficient programmers to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a g ...

Senior Java Developer

Location: UK (Hybrid / Onsite as required)Experience: 5+ yearsRole Type: Fixed Term ContractOverviewWe are developing a scalable Data Fabric platform that ingests, transform ...

Java Software Engineer Hybrid Working Up to £160,000 Base (+ Bonus)

Java Software Engineer – Front Office eTrading Compensation: Up to £160,000 Base + Bonus Location: London (Hybrid) Overview A Tier 1 investment bank is seeking an experienced Java Software Engineer to join a rapidly growing front‑office eTrading team. Thi ...

Software Engineering Manager Loyalty

You will play a key role in driving our ambition to create a best‑in‑class software engineering team, environment, and culture. We are looking for people to join our community of engineers to drive this transformation, build a modern digital ecosystem using exciting technologies and do the best work of the ...

GenAI Full‑Stack Engineer — Build AI Apps for Growth

Funding Circle is looking for a Full Stack Engineer in London (hybrid). This role involves designing and building web applications, with a focus on AI/ML technologies. You’ll work on flagship GenAI products and help evolve the data culture in a supportive environment. Join a high-performing team that v ...

Senior Full Stack Engineer: End to End Web & AI

Intercom is hiring a Senior Full Stack Engineer to join Team Web. This role focuses on crafting intuitive front-end experiences alongside building the backend systems. You will play a crucial part in shaping our website and collaborating with various teams to deliver seamless user experiences. In a hyb ...

Full Stack Web Engineer for Our Next Gen Product

Pikcells Ltd is looking for a talented full stack developer to help bring a new product to life. You will design, develop, and test web applications, implementing both front-end and back-end features using technologies like PHP and Vue.js. This position offers a chance to work in a vibrant office locat ...

Senior Full Stack Engineer Cloud Native .NET/C# & Vue.js

Required Qualifications Senior level software engineering competency, with strong full-stack experience. Proficient in .NET/C#, JavaScript, Azure SQL (MSSQL). Proven experience developing APIs and UI components in distributed systems. Experience working with pipelin ...

Flexible Office Based Full Stack Engineer for Research SaaS

Cancer Research UK (CRUK) seeks a Full Stack Software Engineer to develop innovative software solutions in their Scientific Research & Innovation portfolio. The role involves collaboration with various teams to ensure high-quality outputs. Located in Stratford-upon-Avon, this permanent full-time positi ...

Full Stack Product Engineer for AI Tooling & Data Pipelines

Encord is seeking a Product Engineer to own features end-to-end, from API design and backend systems to UI development. The role emphasizes technical excellence and the impact on clients. Ideal candidates will have strong full-stack engineering experience, fluency in languages like Python or TypeScript ...

Senior .NET Full Stack Engineer AI Driven, Secure Clearing

Marex Group is looking for a Software Developer specializing in C# .NET to enhance clearing technology with an AI-first approach. This role in London focuses on creating modern web-based platforms that prioritize security and compliance. The ideal candidate will leverage modern AI tools to improve code ...

Senior Full Stack Engineer – NHS Cloud & API Expert (Remote)

Sivara GmbH is seeking a Senior Full Stack Software Engineer to join our team on a major NHS digital programme. This role requires extensive experience in full stack development using Next.js and TypeScript. The ideal candidate will have a strong background in AWS services and REST API development. Thi ...

Senior Full Stack Engineer, ESG Data & Dashboards (Hybrid London)

Novata, Inc. is seeking a Senior Full Stack Engineer to join our Engineering team in London. This high-impact role involves developing core tooling that assists companies in managing ESG data. You'll work closely with Product and Design teams, taking ownership of initiatives and ensuring alignment with our mi ...

Senior Full Stack Engineer (Node/Vue/TS) – Remote Europe

Reedsy is looking for developers in the UK to create beautiful book tools for authors. You will work remotely with a team dedicated to enhancing a collaborative word processor and developing scalable web applications. The ideal candidate has professional experience with NodeJS, VueJS, TypeScript, and N ...

Senior Full Stack Engineer Hybrid (2 days in office)

RVU is seeking a Senior Full Stack Engineer to join their team. In this role, you will design and build high-quality customer-facing experiences while working on insurance flows and backend services. You will have the opportunity to lead significant projects and shape the technical direction of your team. </p ...

Senior Full Stack Engineer: C#/.NET & AI‑First Platform

United States Digital Space LLC is looking for a Senior Full Stack Developer to join their Clearing Technology team in Greater London. This role focuses on leveraging AI-assisted development tools to enhance secure web-based platforms. Candidates should have strong expertise in C# .NET and Node.js and be comm ...

Senior Full Stack Engineer, TS – AI & Event Driven Systems

Conficio Recruitment Limited is looking for a Senior Full Stack Engineer to significantly impact the development and scaling of mission-critical systems within their AI-driven legal platform. You will work in a highly technical, product-centered team to solve complex design challenges, optimizing the performa ...

Senior Full Stack Engineer for AI/ML Prototyping (London)

Autodesk is seeking a highly skilled Senior Full Stack Software Engineer to join our London team. In this role, you will develop and maintain both backend and frontend applications while supporting machine learning and AI systems. You'll collaborate with research scientists and ML engineers to rapidly prototype ...

Senior Full Stack Engineer: Real Time UI & AWS Cloud

A dynamic technology firm in the UK is offering a key role in full-stack engineering focused on building secure, scalable web applications. The position requires a strong background in both frontend and backend development, with expertise in React, TypeScript, and AWS cloud services. Ideal candidates will excel ...

Senior Full Stack Engineer for Fusion Platform Hybrid UK

TP ICAP Group Services Ltd is seeking a Senior Engineer to join a new team focused on building the Fusion Platform with Amazon Web Services (AWS). This role involves technical ownership of software development, mentoring junior team members, and driving engineering improvements. The ideal candidate wil ...

Full Stack Cloud Engineer II Build Secure, Scalable Apps

You’re ready to gain the skills and experience needed to grow within your role and advance your career — and we have the perfect software engineering opportunity for you. As an experienced Full Stack Cloud Software Engineer II at JPMorgan Chase within Corporate Technology Tax Team, you are part of a ...

Founding Full Stack Engineer — Build a Trust‑Driven Marketplace

black.ai is looking for a founding full-stack engineer in Shoreditch, London. You will own the entire tech stack and collaborate directly with the CEO and other team members. A competitive compensation package of £160-170k includes both salary and shares, designed for those willing to invest fully in a mission-d ...

Senior Full Stack GCP Engineer for Scalable AI Platform

A leading technology firm in the United Kingdom is looking for a Full Stack Engineer to design and maintain core systems for their platform. The role involves developing scalable services and user-facing features, optimizing data pipelines, and collaborating with cross-functional teams. Candidates should have a ...

Full Stack Engineer: Build AI Driven Insurance Core Systems

Corgi in Greater London is seeking a Full Stack Software Engineer to build and maintain systems that power our insurance operations. In this role, you will design and ship software across multiple essential functions, including underwriting and finance. The ideal candidate has 2+ years of software engi ...

Senior to Staff Full Stack Engineer — AI Infra & Systems

Retelligence is seeking a Senior to Staff level Full Stack Engineer to join their London team in a hybrid capacity of 4 days in the office. The role offers a competitive salary ranging from £110k to £150k based on experience, along with benefits, share options, and a learning & development budget. This ...

Senior Full Stack .NET Engineer AI Driven Cloud Security

Eligo Recruitment is seeking an experienced senior Full Stack software engineer to develop a Cloud-based Security application for Microsoft technology. This role involves using .Net C# on the backend and Node JS on the frontend, ideally suited for someone with a strong IT Security application background. ...

Principal Full Stack Engineer – AI‑Driven SaaS, UK Remote

A leading UK software firm is seeking a Staff Engineer to drive full stack development for innovative SaaS products. The ideal candidate has over 5 years in TypeScript and strong experience with CI/CD practices. This role involves collaborating with stakeholders, mentoring teams, and ensuring product quality as ...

C# .NET Full Stack Engineer – Real Time Payments (Hybrid)

A technology firm in Sunderland seeks a C# Software Engineer to enhance their real-time payment systems while offering a hybrid work model. This mid-senior level role promises a salary up to £55k and a range of benefits including an onsite gym, restaurant, and parking. Ideal candidates will have solid C# .Net Co ...

Full Stack Engineer: TypeScript/Next.js & Go/Python (On site)

A technology company is seeking a Full-Stack Engineer to work on Octopart.com based in Cambridge. The role involves designing user interfaces and developing backend services using technologies like TypeScript and Node.JS. Candidates should have at least 4 years of experience in full-stack application development ...

Senior Full Stack Engineer — Shape Real World Rental Tech

OpenRent is seeking a Senior Full-stack Engineer to design and deliver innovative software solutions that improve the rental experience for millions in the UK. In this role, you will work collaboratively across teams to tackle real-world challenges faced by tenants and landlords, influencing decisions and out ...

Principal Full Stack Engineer — Remote AI‑Powered SaaS Leader

Spectrum IT Recruitment is seeking a Principal Engineer/Lead Full Stack Engineer in St Albans, UK, to shape the future of customer-facing platforms. This role involves leading technical decisions and mentoring developers in a hybrid remote environment. The ideal candidate will have strong experience wi ...

.Net Full Stack Engineer Consultant/Senior Consultant Digital Excellence

At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting‑edge solutions. Join us to drive transformation tailored to our client's challenges of today ...

Senior Full Stack Engineer: AI Driven, High Impact, Remote

Story Terrace Inc. is seeking a Senior Full Stack Developer in Greater London to lead the design, build, and scale web applications. The ideal candidate will have over 5 years of full-stack experience, focusing on Python and JavaScript/TypeScript. This role emphasizes a hybrid working environment, allowing you t ...

Senior Full Stack Engineer Start Up Up to £95k

I've once again partnered with a top London based Tech Company, fresh of the back of their Seed funding round, who are looking to hire multiple Full-Stack Engineers, to their growing Engineering team. This is a Full-Stack role in a small Engineering team, where you will come in and take ownership acros ...

Senior Full Stack Engineer: Build Scalable Real World Apps

OpenRent Ltd. is seeking a Senior Full-stack Engineer to design and deliver scalable software solutions for the rental market. You will turn real-world problems into intuitive features used by millions. Your role will involve collaborating with various teams and mentoring junior developers while workin ...

Senior Full Stack Engineer — Hybrid in Swansea, Public Sector

Scrumconnect Ltd. is looking for a Lead Software Engineer in Swansea, South Wales, to provide technical leadership for multidisciplinary teams delivering digital services for a UK government client. You will set technical direction, lead architectural decisions, and ensure engineering excellence across servic ...

London Based Senior Full Stack Engineer for AI Insurance

Alumni Ventures is seeking a Senior Full Stack Software Engineer to lead the design and development of systems that power their insurance companies. This pivotal role requires a minimum of 5 years’ experience and strong software engineering fundamentals. Located in London, you will own major technical ...

GenAI Full Stack Engineer | Senior Consultant (POCs to Production)

United States Digital Space LLC seeks a talented individual to develop cutting-edge GenAI full-stack applications in London. You will collaborate with a dynamic team to create proof-of-concepts and drive technological innovation. This role allows for significant personal growth, engaging in business developme ...

GenAI Full Stack Engineer Consultant / Senior Consultant Digital Excellence

Job Overview At the company Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting‑edge solutions. Join us to drive transformation tailored to our cli ...

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