1,937,553+ Lead Software Engineer Full Stack Java React Jobs in UK — Top Companies Hiring July 2026

Professional job seekers finding United Kingdom jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Lead Systems Engineer / Developer

Lead Systems Engineer / DeveloperLocation: Warmley, BristolSalary: £45,000–£50,000 (depending on experience)Job Type: Permanent, Full TimeAbout Hagerty DigitalAt Hagerty Digital, we're expanding our Sy ...

Lead Systems Engineer / Developer

Lead Systems Engineer / DeveloperLocation: Warmley, BristolSalary: £45,000–£50,000 (depending on experience)Job Type: Permanent, Full TimeAbout Hagerty DigitalAt Hagerty Digital, we're expanding our Sy ...

Senior Product Engineer (Frontend leaning)

London | Hybrid (2 days in the office) Company I'm working with one of the most interesting AI startups I've come across this year. They're building a new generation of automation software that combines AI, no-code tooling, and workflow orchestration into a single platform. The poten ...

Principal Engineer (Backend focus Java)

Job Description: Principal EngineerRole Title: Principal Engineer (Tech Lead)Location: London (Hybrid - 3 days per week)Reporting to: Delivery Lead / Client Services DirectorCore Tech: Java, React, AWSWho We AreWe’re on a mission to close the worl ...

Principal Engineer (Backend focus Java)

Job Description: Principal EngineerRole Title: Principal Engineer (Tech Lead)Location: London (Hybrid - 3 days per week)Reporting to: Delivery Lead / Client Services DirectorCore Tech: Java, React, AWSWho We AreWe’re on a mission to cl ...

Principal Engineer (Backend focus Java)

Job Description: Principal EngineerRole Title: Principal Engineer (Tech Lead)Location: London (Hybrid - 3 days per week)Reporting to: Delivery Lead / Client Services DirectorCore Tech: Java, React, AWSWho We AreWe’re on a mission to close the worl ...

Senior Java Developer

Salary: £40,000 - 65,000 per year Requirements Active SC Clearance is required. Minimum 5 years of proven experience in software engineering. Strong hands‑on experience with Java. Strong hands‑on experience with Spring Boot. Strong han ...

Graduate .NET Developer

Graduate .NET Developer – Investment Bank – London (Tech stack: Graduate .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, Graduate .NET Developer) Our client ...

.NET Developer

.NET Developer - Leading E-Book Firm - Leicester (Tech stack: .NET Developer, .NET 9, ASP.NET, C#, React, Angular 19, Microservices, Vue.js, TypeScript, Azure, Web API 2, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a leading e-boo ...

.NET Developer

Noir Greater London, England, United Kingdom This range is provided by Noir. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Connecting Microsoft professionals, Developers, DevOps Engineers, Architects and Development Managers with amazing c ...

Mobile Product Engineer in London Sebratec

Mobile Product Engineer Location: London, United Kingdom Posted 11 months ago Tech Stack Mobile UI TypeScript React React Native Product Responsibilities Excellent UI and product sense <l ...

Software Engineer

Company Description: Rapidly scaling tech company This is a great opportunity to join a product-focused engineering team working on scalable, user-centric solutions. As a Software Engineer , you’ll contribute to designing, building, and maintaining modern software systems that power real-worl ...

Frontend React Engineer (TypeScript, MUI) – 2 Days Onsite

Java Script Works is seeking a Front End Developer to work 2 days a week onsite in Telford for a 6-month contract. The role involves collaboration with a UI/UX Design lead and development in Java React. The ideal candidate should have advanced skills in React frameworks, Material-UI, TypeScript, and En ...

Senior Lead Backend Platform Engineer | Spring Boot

A major financial institution in Greater London is seeking a Senior Lead Software Engineer to develop backend libraries using Java and Spring Boot. This role requires strong technical expertise, problem-solving abilities, and collaboration with product engineering teams. The candidate will drive standardization ...

Senior Full Stack AI Engineer Fintech, London (4d/wk)

La Fosse is recruiting a Senior Full-Stack Engineer for a new AI Innovation Team within a leading global fintech based in Central London. In this role, you will own full-stack features from frontends to backends, mentor engineers, and integrate diverse systems. Key requirements include 5+ years of engineering ex ...

Senior Platform and Services Software Engineer

Role OverviewAs a Senior Platform and Services Software Engineer (title negotiable), you’ll play a key role in designing, building, and maintaining the platform and services that power Motilent’s medical imaging analysis and visualisation platform.You’ll work across microservices, event-driven ...

Senior Platform and Services Software Engineer

Role OverviewAs a Senior Platform and Services Software Engineer (title negotiable), you’ll play a key role in designing, building, and maintaining the platform and services that power Motilent’s medical imaging analysis and visualisation platform.You’ll work across microservices, event-driven ...

Senior Software Engineer Front End| up to £75,000 | Hybrid

Senior Software Engineer - Front End up to £75,000 Hybrid Pearson Carter are currently working with a mobile and front-end technology provider who create bespoke solutions to clients worldwide within the iGaming industry. Their solutions are created to support lottery, casino, sportsbook, and bin ...

Lead Engineer for the Equities Risk Platform

As Global Lead Engineer for the Equities Risk Platform, this role owns the end‑to‑end technical direction, engineering quality, and operational resilience of Atlas Risk, a foundational platform for the Equities business. The role uniquely combines hands‑on technical leadership, people management, and platf ...

C# .NET Software Engineer — Full Lifecycle & Collaboration

Xpertise Recruitment is seeking a Software Developer to join a technology business in Bangor, Wales. You will work collaboratively across various products, contributing throughout the software development lifecycle from design to support. This role is ideal for those who enjoy solving problems and are ...

Senior Product Engineer Marketplace Integrations (Remote)

Pinpoint is in search of a Senior Product Engineer to join our remote team, focusing on integrating features and ensuring high performance. You will build full-stack solutions using Ruby on Rails and React, taking ownership from workflows to delivery. The ideal candidate has over 5 years' experience in ...

Low Latency Java Web Developer for Trading

```htmlJob Opportunity: Java Developer Quant Capital is urgently looking for a Java developer to join our high profile client. Client Profile Our client is a well-known financial connectivity provider for the front office. They specialize in creating low-latency, high-volume transact ...

Senior Software Engineer

Scale global e-commerce and mobility architecture Manchester, UK The physical world is the next frontier for artificial intelligence. This pioneering technology company is building the Recognition Economy—a future where advanced intelligence makes physical spaces completely responsive, turn ...

Lead DevOps Engineer

Role Summary Lead DevOps Engineer – Cloud Platform & Site Reliability Location: Nottingham or London, UK Team: LSEG Risk Intelligence Engineering What You’ll Be Doing As a Lead DevOps Engineer, you’ll be a hands‑on technical leader, guiding the design and impleme ...

Lead DevOps Engineer

Role Summary Lead DevOps Engineer – Cloud Platform & Site Reliability Location: Nottingham or London, UK Team: LSEG Risk Intelligence Engineering What You’ll Be Doing As a Lead DevOps Engineer, you’ll be a hands‑on technical leader, guiding the design and impleme ...

Staff Engineer

Overview Staff Engineer / Principal Engineer / Lead Engineer - Full Stack Hybrid working: On-site one day per week Lead Forensics is a leading UK based SAAS company with products in the B2B sales and marketing space. We’re seeking a Staff level full stack Software Engineer / S ...

Senior Software Engineer

Senior Fullstack Engineer – TypeScript, Nodejs, React, AWS, Terraform, Kubernetes/DockerRemote First / South Manchester£70k + BenefitsModern Tech Stack and CodebaseThe is a great opportunity for a Senior Fullstack Engineer to join a team working on Greenfield projects for a large ...

Software Developer in Coleraine MCL InsureTech Ltd

Software Developer Coleraine, United Kingdom Posted 10 months ago Tech stack Java Databases SQL Visual Basic .NET ASP.NET .NET C Qualifications Minimum of 2 years’ experience in a sim ...

Manager, Senior Platform Software Engineer

About Baringa Baringa is a global consulting firm that partners with leaders to drive change and create value. With deep industry expertise and advanced technology, we help clients deliver with greater confidence and certainty. We operate across energy, financial services, government, consumer pr ...

Back End Software Engineer

Back End Software Engineer Department: Engineering Employment Type: Full Time Location: London, UK Compensation: £57,000 - £75,000 / year Description We are a team of about 50 engineers who collaborate closely and take prid ...

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 ...

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 ...

Software Engineer

Role Summary At Convergence Group, we need a Full Stack Software Engineer with strong C# skills to design and build the next generation of software that powers our business. Responsibilities Build and maintain high-quality, scalable web applications using C#, JavaScript, w ...

Graduate Software Engineer Night Shifts in London Graduate Recruitment Bureau

Job Responsibilities Working with clients to develop, test, and support their new and existing software products. Duties to Include: Developing high quality Java code Getting involved in design discussions about system architecture and object-oriented desig ...

Founding Engineer (AI)

Compensation: Up to £120,000 + significant equity Type: Full‑time What is DeepFlow? DeepFlow is the hyperscaling platform. We launch and scale AI-native businesses. An operator with 10 years of domain expertise pairs with DeepFlow’s platform and engineering support to buil ...

Senior Full Stack Engineer: End to End Platform Ownership

OnBuy seeks a Senior Full Stack Engineer for a UK remote role responsible for building and evolving their commerce platform. The position involves end-to-end delivery of features across UI, APIs, and backend systems, requiring strong skills in PHP, JavaScript frameworks, and database management. Applicants shoul ...

Senior Full Stack Engineer (C#/Backbone) | AI & UX Focus

Sivara GmbH, a growing edu-tech company in the United Kingdom, is seeking a Principal or Staff Engineer with expertise in C#, Backbone, and MS SQL. This role involves hands-on development and collaboration within a small, dynamic team to enhance both the engineering practice and our social impact in education ...

Senior Full Stack Engineer AI Systems for LLMs (Remote)

Letit is seeking a Senior Full Stack Engineer to work across various product surfaces, including React front-end and NestJS backend. While this position is primarily remote, candidates from the EU and UK are preferred. The role focuses on building reliable AI systems, enhancing user experience, and solving ne ...

Senior Full Stack Engineer — Remote, AI Powered Health Platform

A leading digital health company in the United Kingdom is seeking a Senior Full-Stack Developer to join its engineering team. The role involves building scalable applications using Node.js, TypeScript, and AWS while enhancing cloud infrastructure. The ideal candidate should have over 5 years of software developm ...

Full Stack .NET/C# Engineer — Hybrid, High Impact Projects

Stealth iT Consulting is seeking a Full Stack Engineer to work on impactful digital transformation projects. This hybrid role requires expertise in C#/.NET Core and effective collaboration in Agile teams to deliver solutions for government and commercial clients. As part of a supportive and innovative ...

Senior Product Engineer AI Driven Full Stack B2B SaaS

Marcode, an AI-first company based in the United Kingdom, is seeking a Senior Product Engineer. This role involves owning features across the app, API, and data platform, emphasizing a full-stack approach. Candidates should have strong experience in B2B SaaS products and fluency with AI coding tools. You will be ...

Full Stack AI Engineer — End to End FinTech Automation

Novabook in the United Kingdom is seeking a skilled individual to take on a pivotal role in evaluating and enhancing our AI document ingestion pipeline. You will be responsible for integrating real bank accounts into our platform and automating bank transaction categorization using AI. The ideal candid ...

Senior Full Stack Engineer (Trading API Client Facing Application)

Responsibilities As a Senior Full-Stack Engineer, you will be responsible for designing, implementing, and maintaining systems and services that form the foundation of Alpaca and empower millions of users who trade billions of dollars worth of assets As part of the Trading API team, ...

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 ...

Founding Software Engineer | Cybersecurity Start up | London

Founding Software Engineer | Cybersecurity Start-up | London Help build the future of cybersecurity from day one. Founding Software Engineer required for an early-stage start-up on a mission to transform how organisations secure their data and infrastructure. Built by a founding team with ...

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 ...

Full Stack Engineer: Build Bold FinTech Features & Own Impact

Emma - we are hiring! is looking for a talented full-stack engineer to join our dynamic team in London. You will engage with our backend and mobile/web applications, contributing to a roadmap filled with exciting new features and integrations. The right candidate will have at least 2 years of experience in fu ...

Senior Full Stack Engineer: Node.js, AWS & Kubernetes (Remote Europe)

is seeking a Senior Full Stack Engineer to join their remote team in Europe. You will build and scale digital payment and account infrastructure using Node.js and AWS, work on backend services, and improve cloud-native systems. The ideal candidate has over 4 years of experience, strong skills in Kubernetes, Pos ...

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 ...

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 ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

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