1,937,552+ 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

Internal Audit Front End Engineer Analyst / Associate Birmingham,

Internal Audit - Front End Engineer - Analyst / Associate - Birmingham, Birmingham, West Midlands, England, United Kingdom Job Description At Goldman Sachs, our engineers build scalable software and systems, architect low‑latency infrastructure solutions, and safeguard against c ...

Founding AI Engineer (£100k–150k + Equity) at Pharosyn

Job Title: Founding AI Engineer Salary: £100k–150k + Equity Company Description: Pharosyn - EF-backed AI startup for pharma Job Description: Join Pharosyn as a founding engineer to automate competitive intelligence in the pharma and biotech industries ...

Founding Full Stack Product Engineer AI Native Cybersecurity

C&D Talent Advisory - Academy is seeking a Mid-Senior Full-Stack Engineer to join a pioneering team working on AI-native cybersecurity solutions. The role involves end-to-end product ownership, building modern web applications using TypeScript and React, and integrating AI capabilities. Candidates shou ...

Principal Full Stack Engineer – AI‑Driven SaaS Leader

Sivara GmbH, a high-growth SaaS business in the UK, is seeking an experienced Principal or Lead Engineer to shape the future of customer-facing platforms. This hands-on leadership role emphasizes collaboration, innovation, and technical influence within a mature engineering environment. The company off ...

Senior Full Stack Engineer (Django/Python) – SC Cleared

Sivara GmbH is seeking an experienced Senior Full Stack Developer to join the team. The role is hybrid and supports locations such as London, Manchester, Birmingham, Sunderland, or Belfast. Candidates must have 8-10 years of relevant experience and knowledge in Python and Django, with SC Clearance as a minimu ...

Senior Full Stack Engineer Build Scalable eCommerce Infra

Swap, located in the United Kingdom, is seeking a Full Stack Engineer to join our growing team. In this pivotal role, you will help shape the future of our company by writing robust and maintainable code while working with a dynamic team focused on delivering cutting-edge solutions. The ideal candidate ...

Senior Backend‑Heavy Full‑Stack Engineer (Hybrid, London)

Preply, based in London, is seeking a Senior II Full-Stack Engineer who will focus primarily on backend development using Python/Django while also contributing to frontend tasks in React. In this hybrid role, you will lead technical initiatives and work collaboratively with cross-functional teams to deliver m ...

Senior II Full Stack Engineer (back end heavy)

Senior II Full-Stack Engineer (back-end heavy) Location London Employment Type Full time Location Type Hybrid Department Engineering We power people’s progress. At Preply, we’re all about creating life-changing lear ...

Senior Full Stack Engineer for AI Robotics Platform

Humanoid is seeking a passionate Senior Full Stack Engineer to join our team in London, focused on developing advanced humanoid robots. This role involves designing cloud platforms for managing robotic fleets while ensuring robust backend services. The ideal candidate should have expertise in React, AP ...

Senior Full Stack Engineer AI Health Platforms (Remote)

Envision Pharma Group seeks a Senior Full Stack Engineer in Cambridge to lead the design and development of scalable applications driving AI solutions. You will work with cross-functional teams, utilizing modern JavaScript frameworks and Python to optimize performance and ensure system reliability. Thi ...

Full Stack Angular Engineer for Web Banking Solutions

Avaloq AG is seeking a skilled Full Stack Angular Software Engineer to join their team in Edinburgh. In this role, you will design, build, and maintain scalable web applications, collaborating closely with Business Analysts, UX designers, and engineers to deliver user-focused solutions. You will have responsi ...

Hybrid Full Stack Engineer: Gen AI for EdTech

Sivara GmbH is seeking a Full Stack Engineer for an innovative Ed-Tech project, offering up to £475 per day on a hybrid basis near Stratford, London. The ideal candidate will have strong experience in full-stack development, proficiency in Python and React, and a passion for AI-driven applications. Thi ...

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- ...

AI Driven Full Stack Engineer for FinTech Growth

Burns Sheehan is seeking a Full Stack Engineer in Manchester to contribute to a vital modernisation programme in a leading FinTech. The role involves designing and maintaining full-stack applications and collaborating within agile teams. Ideal candidates will possess familiarity with Agile methodologie ...

Senior Full Stack Engineer — Remote‑Friendly AI Platform

Cohere is looking for a talented individual to join our team and contribute to the North AI workspace platform. You will be integral in building and shipping features while developing autonomous agents that process sensitive data. This role allows you to excel in a fast-paced environment and have a significan ...

Senior Full Stack Engineer, Ecomm – 12 month contract

About the Job Games Workshop has an exciting opportunity to join us as a Full Stack Engineer on a 12‑month contract. In this role you will deliver critical customer‑facing eCommerce solutions for Games Workshop. You will spend time understanding the challenges you are trying to solve, cre ...

Senior Full Stack Engineer: Build Cross Border Payments

Xe.com in Bracknell is seeking a Senior Full-Stack Engineer to drive the development of our cross-border payments platform. You'll own features across the stack while leading delivery and ensuring production reliability. The ideal candidate will have 6 to 10+ years of experience in building production ...

Full Stack Product Engineer — Build fast, delight users

A forward-thinking B2B support company in Greater London is seeking an individual contributor to build and enhance their customer support platform. This role involves developing both frontend and backend solutions while collaborating closely with customers to resolve issues. Ideal candidates are initiative-drive ...

Senior Full Stack Engineer, Ecomm – 12 month contract

Games Workshop has an exciting opportunity to join us as a Full Stack Engineer on a 12‑month contract. In this role, you’ll be part of a team delivering critical customer‑facing eCommerce solutions for Games Workshop. You’ll spend time understanding the challenges you are trying to solve, creating h ...

Senior Full Stack Product Engineer | Work From Anywhere

Zinc is expanding its engineering team and is looking for a Senior Full Stack Product Engineer to shape the technical direction of its platform. You will design and deliver high-quality features while ensuring the product remains efficient and user-friendly. This role requires advanced skills in Node.j ...

Senior Full Stack Engineer AI Platform, Customer Facing

Conveo AI bv is looking for a Senior Full-Stack Engineer to develop their AI-powered platform in London or Antwerp. You'll own the lifecycle of features, actively engage with clients, and have a significant impact on product development. The ideal candidate has 6+ years in full-stack development with a ...

Senior Full Stack Engineer — Flexible Hours, SaaS Leader

Oliver Bernard is seeking a Senior Full Stack Developer to join a market-leading SaaS company in London. The role offers the opportunity to collaborate in a dynamic team environment, ensuring productivity and best practices in development. With 5+ years of experience in PHP, and familiarity with framew ...

Full Stack Engineer (£75k £110k + Equity) at Letty

Job Title Full-Stack Engineer Salary £75k-£110k + Equity Company Description Letty is a high-growth London startup, backed by Entrepreneurs First and top-tier VCs, building the definitive AI agent layer for the $1T+ real estate industry by replacing manual work ...

Senior Full Stack Engineer Remote, Global Impact & Growth

A technology-driven company is seeking a Senior Full Stack Engineer to join their team. In this fully remote role, you will design and build features for their platform, optimize performance, and collaborate with a global engineering team. Ideal candidates have extensive experience with Node.js, React, and AWS. ...

Full Stack Engineer AI for Industrial Ops (Equity)

Tenth Revolution Group is seeking a Full Stack Engineer to join their team in London. This role offers a unique opportunity to work at the intersection of AI and real-world industrial applications. You will be responsible for delivering AI-driven software solutions that have tangible impacts on operational si ...

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 Design Engineer (Frontend Heavy · Full Stack Capable)

The highest calling for AI is improving human health. At Perceptic, we're building the AI operating system that powers drug discovery - a unified intelligence layer that connects evidence, reasoning, and action across the entire drug lifecycle. We were built by operators from Palantir who spent yea ...

Full Stack Engineer Fully Remote | Upto $130/hr

we are hiring Senior Software Engineers for a high-urgency closed‑source application development project. We're looking for experienced full-stack developers who can work independently, build scalable systems, and contribute across backend and frontend development. Responsibilities Des ...

Full Stack Commerce Engineer — AI/ML & Cloud Impact

Accenture is seeking a Full Stack Commerce Engineer (Consultant) to support client engagements and design innovative platform solutions using Generative AI technologies. The ideal candidate will have strong full-stack engineering skills and experience deploying applications on cloud platforms. This rol ...

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

EXL, a leader in data and AI solutions, is seeking a Full Stack Developer in London. The role involves designing scalable applications and robust data architectures while leveraging modern enterprise technologies like .NET, Python, and Kubernetes. Ideal candidates have 6-10 years of experience in appli ...

Senior Full Stack Engineer (eDV Cleared) – Secure Systems

Frontier Resourcing is looking for eDV Cleared Full Stack Developers to join their teams in the UK, particularly in Manchester. You'll contribute to designing and integrating secure software solutions in a high-impact environment. The role includes developing quality code, participating in Agile teams, ...

Full Stack Engineer (C#, Javascript, career defining ) TLNT1_NI

Overview Steer Economic Development is seeking an evaluation specialist to join our team of high-performing economic development consultants. You will work on a range of different projects, for national, regional and local public sector clients, including process and impact evaluations, evaluation ...

Full Stack Engineer: Build AI‑Reliable Legal Data

Jack & Jill is hiring a Software Engineer in Greater London to solve complex technical problems in the legaltech sector. You will lead the development using Python, Django, and TypeScript within a high-trust, elite team dedicated to delivering reliable legal AI solutions. The ideal candidate will posse ...

Hybrid Full Stack AI Engineer for Carbon Intelligence

Industrial and Financial Systems is hiring for a role focused on building scalable AI solutions to help industrial organizations reduce their environmental impact. Responsibilities include designing APIs and services, ensuring code quality, and facilitating DevOps activities. The ideal candidate will b ...

Full Stack AI UI/UX Engineer | Equity Options

A leading AI startup in Greater London is seeking a Full-Stack Engineer (Front-End Leaning) to innovate user interfaces for AI-assisted legal work. You will contribute to the design and development of high-performance tools, working closely with AI experts. The ideal candidate has over 5 years experience in web ...

Senior Full Stack Engineer: Go & Vue, Flexible Hours

NoteMachine is seeking a Senior Full Stack Developer to join its innovative IT Development team in Crickhowell, UK. This role focuses on designing, developing, and maintaining cutting-edge web-based systems, while collaborating with a dynamic team to ensure high standards of quality and security. We're ...

Senior Full Stack Engineer – AI/Cloud & APIs (Hybrid)

Ventula Consulting in Greater London is seeking a Full Stack Developer for an initial 6-month contract role. You will work on both front and back-end applications, delivering features in alignment with their digital roadmap. The position offers a daily rate of £575 and follows a hybrid working structure, requ ...

Full Stack JavaScript Engineer for AI/IoT & VR

Syncoms, located in Greater London, seeks passionate individuals to lead projects in VR, IoT, and AI. The role involves developing user-facing features, optimizing applications, and working in an Agile environment. Ideal candidates exhibit strong technical skills in MongoDB, Azure, HTML5, and are creat ...

Senior Full Stack Engineer AI Powered SaaS, Ownership

HUG, a fast-growing B2B SaaS company in Greater London, is seeking multiple Senior Full Stack Engineers to join their product engineering team. You will be responsible for building customer-facing features, driving technical decisions, and collaborating closely with various teams to shape the product roadmap. ...

Full Stack Engineer for AI Platform – Hybrid + Equity

Prolo in Greater London is seeking a Full-Stack Engineer to contribute to building their AI-powered procurement platform for the construction industry. You will work with cutting-edge technologies and be a pivotal member of a small team, wearing multiple hats and having a significant impact on product develop ...

Hybrid Full Stack AI Engineer for Carbon Intelligence

IFS in Greater London is looking for a skilled full stack developer to create innovative AI solutions that enhance environmental impact measurement. In this role, you will design APIs, improve legacy systems, and ensure high-quality software delivery. Proficiency in GoLang, React, and DevOps practices ...

Founding Full Stack AI Engineer for Agentic Sustainability

Annwn is seeking Founding Full Stack AI Engineers to build agentic systems that enhance sustainability decision-making. You will be at the core of our team, implementing modern AI technologies and working with vital environmental data. As part of this early-stage startup, you will have substantial owne ...

Senior Full Stack Engineer (Remote) – Python & API Expert

Mercor is seeking a Senior Software Engineer to design and maintain full-stack applications using Python in a remote capacity. This role requires strong proficiency in Python, API development, and experience with MCP systems. The ideal candidate must have multiple years of experience, excellent problem ...

Senior Full Stack Engineer Real Time Training Interfaces

Skyral Group in Warminster seeks a skilled developer to transform data models into effective training systems. The role emphasizes front-end design and involves integration across various technologies. Ideal candidates will possess strong programming skills in Go, Python, React, and Typescript, and exc ...

Senior Full Stack Engineer — AI Driven Health Platform

Montu UK is seeking a Senior Full-Stack Developer to join our engineering team, focusing on building scalable applications that enhance patient care through cannabis-based medicines. The ideal candidate will have over 5 years of experience, proficiency in Node.js, TypeScript, and AWS technologies, and a passi ...

Full Stack .NET Engineer: Build Modern APIs & UIs

United States Digital Space LLC is looking for a C#/.NET Full Stack Engineer based in the UK. You will build digital solutions that drive transformation for clients, working with technologies like ASP.NET Core, C#, and various front-end frameworks. A flexible approach is required, with base locations includin ...

Full Stack Engineer II — TypeScript/Vue, Hybrid London

Ziff Davis, Inc. is seeking a Software Engineer II for their Engineering team in London. This hybrid position involves collaborating with over 25 engineers to enhance the user experience for millions of monthly visitors. The ideal candidate should have a minimum of 4 years of backend development experi ...

Hybrid Manchester: Full Stack .NET Engineer (C#/Vue)

Rebel Recruitment Limited is seeking a Mid Level Software Engineer to join their Manchester team in a hybrid working arrangement, requiring two days a week in the office. This hands-on role involves building and improving software systems, directly impacting customer environments while working closely with a ...

Full Stack Product Engineer — AI Powered, Remote First

The Flex is seeking a Full-Stack Product Engineer to drive product development, automate workflows, and enhance customer experiences across our proprietary tech platform. The ideal candidate will possess strong full-stack skills and a user-centric approach, making direct impacts on thousands of users globally ...

Ruby on Rails Full Stack Engineer — Equity & Startup

MarkIT Placements is seeking a Full Stack Engineer (RoR) based in London to continuously improve their product by building essential features. You will work in a fast-paced environment, closely collaborating with the business to deliver significant value to customers. The ideal candidate will be an exp ...

🚀 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