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

Full Stack Engineer Own Live SaaS Pricing Tools

Clariti AI is seeking a Full Stack Engineer with a strong front-end focus to enhance client-facing pricing tools. In this role, you will design and develop features for a SaaS product used by retail banks, ensuring usability, performance, and reliability. The ideal candidate will have a minimum of two ...

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- ...

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 ...

Full Stack ML Engineer: Build & Deploy Intelligent Apps

LexisNexis Risk Solutions in Greater London seeks a Full-Stack Machine Learning Engineer to build and deploy ML-powered tools for fraud and identity analytics. The role includes developing APIs, integrating ML models, and collaborating across teams. Ideal candidates have over 4 years of relevant experi ...

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 ...

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 ...

Full Stack Engineer EdTech Impact & Adoption (Share Options)

An EdTech disruptor in Greater London is seeking a Full-Stack Developer to join their innovative team. You will work closely with experienced leaders to enhance their platform, focusing on product development and customer success. This role requires expertise in React and NodeJS, exceptional problem-solving skil ...

Junior Full Stack Engineer: Build Scalable FinTech Solutions

CityGrad in Greater London is seeking a Junior Full Stack Developer to join their dynamic tech team. This role plays a crucial part in developing resilient technology solutions that drive business growth and innovation. The ideal candidate will engage in agile collaboration, interface with stakeholders ...

Full Stack Ruby on Rails Engineer | EdTech Impact

iRockweb seeks a Full Stack Ruby On Rails Software Developer to join their dynamic team in Farnborough. This role offers a chance to contribute to a platform that positively impacts children's music education through innovative software solutions. The ideal candidate will have strong skills in Ruby on ...

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 ...

Full Stack Engineer Fully Remote | Upto $130/hr

About the job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo</st ...

Senior Full stack Engineer (more product motivation vibes)

Limbic's vision is to ensure the highest quality therapy is accessible to everyone, everywhere. The way we do that is by deploying AI responsibly, using it to augment clinical care and reduce barriers to accessing therapy at scale. Limbic is already used extensively in Talking Therapies in the UK, and now expand ...

Full Stack Engineer Fully Remote | Upto $130/hr

About the job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo</st ...

Full Stack Engineer AI Enabled – Senior Vice President

Citi is looking for a highly skilled and innovative Full Stack Engineer with a strong background in modern enterprise architecture and a passion for Artificial Intelligence. This role will be instrumental in designing, developing, and implementing robust, scalable, and AI-enabled solutions across our platform ...

GenAI Full Stack Engineer Managing 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 an ...

Public Impact Full Stack Engineer for Digital Services

ELLIOTT MOSS CONSULTING PTE. LTD. in Penarth seeks passionate Full Stack Engineers to join product teams. You will collaborate with product owners, managers, and designers to create user-centric applications that enhance public services. The ideal candidate has a degree in Computer Science or related f ...

Full Stack Product Engineer — AI Powered, Remote First

The Flex is seeking a Full‑Stack Product Engineer in Leeds, UK, to build innovative solutions that enhance the modern renting experience. You’ll take ideas from concept to production, automate workflows, and develop operational tools. The ideal candidate has strong full-stack development experience, pr ...

Full Stack .NET/Angular Engineer – Cloud Native & AI

Network Plus in Worsley is seeking a Full Stack Developer to modernise the platforms used in delivering critical utility services. The ideal candidate will contribute to designing and developing scalable applications using C# and Angular, and will work within an Agile team environment. Candidates shoul ...

Senior Full Stack Product Engineer | Work From Anywhere

Zinc Work Limited is seeking a Senior Full Stack Product Engineer to join our Tech - Engineering team in London. You will play a vital role in shaping our platform, building high-quality features while collaborating closely with Product and Design teams. This role requires advanced full stack developme ...

Graduate Full Stack Engineer — Build & Scale in FinTech

Oho Group is seeking a Full-Stack Software Engineer to join its talented engineering team in Greater London. In this role, you will build and ship customer-facing features for modern web applications and work through the full development lifecycle. The ideal candidate will have top grades from a Russel ...

Mid Level Full Stack Shopify Engineer (Growth Accelerator)

Swanky is a Shopify Platinum Partner agency. We design, build and grow Shopify Plus stores for brands across the UK, Europe and beyond. Our work spans new builds, complex platform migrations, and ongoing optimisation for established merchants. About the Role This role sits within our Grow ...

GenAI Full Stack Engineer Managing 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 an ...

Full Stack Product Engineer — AI Powered, Remote First

The Flex is seeking a Full-Stack Product Engineer to lead product design and implementation. This role involves transforming ideas into tangible software solutions, automating workflows, and integrating with platforms like Airbnb and Stripe. Located in Belfast, United Kingdom, this position offers the ...

Full Stack Engineer (AI/ML) in Sunderland Haystack

Description Design, develop, and deploy end-to-end AI/ML-powered features and applications using Python and modern frameworks. Build, integrate, and maintain machine learning models/solutions—from data pipelines to API deployment and... About the Job A fast-growing tech startup ...

Full Stack / Platform Engineer (£90k + Equity) at Handshaik

Job Title: Full-Stack / Platform Engineer Salary: £90k + Equity Company: Handshaik - AI-native company intelligence platform backed by BigChange founder Martin Port. Location: London, UK Job Description: Join a high-growth startup as a ...

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 Full stack Engineer (more product motivation vibes)

Limbic's vision is to ensure the highest quality therapy is accessible to everyone, everywhere. The way we do that is by deploying AI responsibly, using it to augment clinical care and reduce barriers to accessing therapy at scale. Limbic is already used extensively in Talking Therapies in the UK, and now expand ...

Remote Eligible Full‑Stack JS Engineer: Node.js Replatform

Victorious Job Search Ltd in Manchester seeks a developer to contribute to the re-platforming of a core application from Rhino to Node.js. You’ll work in a team focused on integrating new technologies and improving development practices. The role involves both front-end and back-end JavaScript developm ...

Senior Full Stack Engineer (Remote) Scalable APIs & UI

A leading recruitment agency is seeking a Senior Full Stack Engineer for a 12-month remote contract. The ideal candidate has at least 4 years of experience in Python and Flask, along with a strong grasp of SQL databases. Responsibilities include architecting backend services and building responsive front-end int ...

Senior Full Stack Engineer: Build Scalable Web Apps

Kaleida is seeking a Senior Full-Stack Software Engineer in Trafford, United Kingdom. This role involves developing scalable software solutions and working with technologies like ASP.NET MVC and Angular. The ideal candidate will have over 7 years of experience, focusing on quality software development ...

Senior Full Stack Engineer AI Driven Procurement (Hybrid)

Prolo is seeking a Senior Software Engineer to take ownership of building impactful products within a fast-growing startup environment. Your role involves developing features across the stack, from backend services to user interfaces, as well as integrating AI technologies. You will have a significant ...

Founding Full Stack Engineer for AI‑Driven Workflows

Cubiq Recruitment is seeking a Founding Full-Stack Engineer to join their early-stage team in London. This role involves designing and building tools for complex data workflows, focusing on user needs and rapid iteration. The ideal candidate is passionate about building from scratch and has proven expe ...

Senior Full Stack Engineer — AI HealthTech, Impact & Equity

Limbic is looking for a motivated Senior Full-stack Engineer to help make therapy more accessible through AI. You will design, build, and ship features that impact patients and clinicians every day in our London office. With 4+ years of experience in full-stack engineering, strong skills in TypeScript, ...

Senior Full Stack AI Engineer — Enterprise AI Workflows

HelloKindred is seeking a Senior Full-Stack AI Engineer to develop an AI-enabled helpdesk platform. This hybrid role involves designing user-facing applications, integrating solutions, and building scalable AI workflows. Working with cross-functional teams, the ideal candidate will support production-g ...

Principal Software Engineer

Principal Software Engineer - UK Security Clearance eligibility required. Location: London, UK (Hybrid ~1 day per week in office / onsite)Contract: Permanent, Full-timePackage: £80,000-90,000 + 10% bonus + 10% shares options + benefitsAbout AppviaAt Appvia, we help organi ...

Principal Software Engineer

Principal Software Engineer - UK Security Clearance eligibility required. Location: London, UK (Hybrid ~1 day per week in office / onsite)Contract: Permanent, Full-timePackage: £80,000-90,000 + 10% bonus + 10% shares options + benefitsAbout AppviaAt Appvia, we help organi ...

Site Reliability Engineer III Java / Python

As a Site Reliability Engineer III at JPMorgan Chase within the External Collaboration team, you will lead development and integration of collaboration platforms such as VDRs, Microsoft 365 B2B, Client Portals, and Google Workspace. Site Reliability Engineering at JPMorgan Chase is part of the Software Eng ...

Site Reliability Engineer III Java / Python

As a Site Reliability Engineer III at JPMorgan Chase within the External Collaboration team, you will lead development and integration of collaboration platforms such as VDRs, Microsoft 365 B2B, Client Portals, and Google Workspace. Site Reliability Engineering at JPMorgan Chase is part of the Software Engine ...

Site Reliability Engineer III Java / Python

As a Site Reliability Engineer III at JPMorgan Chase within the External Collaboration team, you will lead development and integration of collaboration platforms such as VDRs, Microsoft 365 B2B, Client Portals, and Google Workspace. Site Reliability Engineering at JPMorgan Chase is part of the Software Engine ...

Front End Engineer in London WeBuild AI

Front End Engineer London, United Kingdom Posted 11 months ago Tech Stack React TypeScript UI/UX Artificial Intelligence Frontend Web Responsive UX Key Responsibilities Develop high-q ...

Software Engineer (AI+Fullstack)

Software Engineer (AI & Full Stack) - Senior Consultant Salary: £60,000 - £70,000 pa + £4,000 Bonus plus benefits, perks and healthcare options Base locations: London, Manchester, Newcastle or Glasgow Job Type: Permanent | Hybrid (2 days per week) | Occasional travel ...

Senior Java & Spring Architect for Scalable Cloud Systems

Lead Software Engineer Belfast, UnitedKingdom Posted 10 months ago This is a job posted by our partner Jooble Tech stack Spring Framework Java Kafka SQL Software Engineer messaging NoSQL Below is a snippet of the job description. To read the full text, please ...

Software Engineering Manager

Senior Business Manager - Cloud Software at Uniting Ambition / Placing permanent Senior Software talent in the Regions Software Engineering Manager Location: Manchester (Hybrid, 2 Days/Week Onsite) Drive Innovation in a Fast-Growing, Start-Up Inspired Environmen ...

🚀 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