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

Senior Software Engineer

Senior Software Engineer London (Hybrid) £90,000 – £100,000 Here at Data Idols, we’re working with an innovative technology business that is scaling a cutting-edge AI-powered platform used by enterprise clients globally. As the platform continues to gro ...

Senior Software Engineer

An opportunity has arisen for a Senior Software Engineer to join a growing engineering team delivering software solutions used in industrial environments. You will develop and maintain desktop and web applications using C#, and WPF, contributing to both new development and ongoing system improvemen ...

Senior Software Engineer

Role Summary The Workflows Engineering team is recruiting a C++ Senior Software Engineer to address complex challenges, lead the resolution of new issues, and integrate modern AI‑first approaches into delivery. Responsibilities Act as a subject matter expert, advising on desig ...

Senior Software Engineer

Salary: £100,000 - 100,000 per year Requirements Experience writing and maintaining large-scale, robust production software in a fast-changing environment with rapid release cycles. Expertise in Node.js and its associated frameworks and ecosystem. Extensi ...

Senior Software Engineer

Pay up to £80,664, plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. DWP. Digital with Purpose. You’ll join a multi-disciplinary agile team, solving complex problems and delivering technology that makes a real difference to users. ...

AI Software Engineer

Skills And Competencies 3+ years of experience in backend software development with a focus on Node.js, building scalable and production-grade systems Hands-on experience with AI applications, including LLM implementations, retrieval-augmented generation, prompt optimization, and ...

Graduate Software Engineer

Overview Software engineering at the frontier of AI and defence This team is motivated by saving lives in war affected regions and on the battlefield. They believe that by combining advanced technologies from different sectors they can fundamentally change the effectiveness of those ...

Senior Software Engineer

About Swap Swap is the infrastructure behind modern agentic commerce. The only AI-native platform connecting backend operations with a forward-thinking storefront experience. Built for brands that want to sell anything - anywhere, Swap centralises global operations, powers intellige ...

Senior Software Engineer

Senior Software Engineer Location: Brighton, United Kingdom. Employment type: Full‑time. The opportunity Senior Software Engineer to lead design and implementation of our business‑critical data platform. High autonomy role, embedded in a team of senior software and data ...

Senior Software Engineer

At Mako, we believe in the power of collaboration to drive innovation in pursuit of our collective ambition; excellence in trading. Our diverse community is connected through a commitment to being the best we can be with the highest standards of integrity. Join the Software Development team which i ...

Senior Software Engineer

Senior Software Engineer This is an opportunity to build the foundational systems of a frontier AI company. You’ll work across our voice layer, agent orchestration, and deep healthcare integrations. You’ll design and ship systems that must be fast , reliable , observable ...

Senior Software Engineer

Role Purpose This is a hands‑on engineering role at the heart of a significant platform transformation. You will be a core contributor to a squad that is actively changing how it builds, owns, and delivers software, and you will have real influence over the quality and direction of that work. </p ...

Senior Software Engineer

Senior Software Engineer Department: Engineering Employment Type: Full Time Location: London Reporting To: David Williams (CTO) Compensation: £80,000 - £120,000 / year Description We believe that building so ...

Senior Software Engineer

Salary: £50,000 - 50,000 per year Requirements An extensive and demonstrable background in modern software engineering/development practice Expertise in multiple modern software languages Experience of working within the cloud – we currently use AWS ...

Senior Software Engineer

£57k - £60k, salary depending on skills and experience. Permanent. 37 hours a week, Monday to Friday. Hybrid / Huntingdon – the role will require you to work in the office 1 day a week. Overview We are looking for a highly skilled Software Engineer with deep expertise in .NET to join our en ...

Senior Software Engineer

Salary: £50,000 - 65,000 per year Requirements We require candidates to be a sole British citizen and eligible to obtain security clearance. We are looking for strong commercial experience developing software using Embedded C or C++. We want experience wo ...

Senior Software Engineer

Salary: £65,000 - 75,000 per year Requirements Minimum of 5 years experience developing production applications using Java Minimum of 3 years experience with SQL Experience developing web applications and RESTful APIs using modern web technologies < ...

Senior Software Engineer

Senior Software Engineer – Web Platform Description 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 th ...

Software Security Engineer

The Opportunity Join a team where you can explore the full product range while working with innovative technologies and approaches! This role can also be based from Hertfordshire. Hybrid role, with the expectation that it will be 3 to 5 days onsite due to the exposure of work. ...

Software Security Engineer

Software Security Engineer – Moorgate office based Join Fortinet, a global cybersecurity pioneer with over two decades of excellence, as we continue to shape the future of cybersecurity and redefine the intersection of networking and security. At Fortinet, our mission is to safeguard people, devi ...

Software Engineer (E2)

## Software Engineer (E2)Applylocations: Northern Ireland - Belfasttime type: Full timeposted on: Posted Todayjob requisition id: R67304**Job Summary:****Job Description :****Who we are...**At Wellington IT we provide the most successful range of Credit Union software in Northern Ireland/Ireland, current ...

Principal Software Engineer

Salary: £60,000 - 90,000 per year Requirements Bachelors degree in Computer Science, Software Engineering, or similar 10+ years working with Linux platforms, including administration, performance tuning, security, and troubleshooting Advanced C programmin ...

Staff Software Engineer

At CoMind, we are developing a non-invasive neuromonitoring technology that will result in a new era of clinical brain monitoring. In joining us, you will be helping to create cutting-edge technologies that will improve how we diagnose and treat brain disorders, ultimately improving and saving the lives of ...

Software Engineer, C++

Tower Research Capital is a leading quantitative trading firm founded in 1998 that specializes in systematic trading and engineering, focusing on low‑latency solutions for cryptocurrency markets. Responsibilities Designing and implementing a high‑frequency trading platform for crypt ...

C# Software Engineer

Salary: £100,000 - 100,000 per year Requirements Strong C#/.NET development experience Solid understanding of software architecture, design patterns, and system design SC Clearance or eligibility for clearance Experience in a consultancy or clie ...

Software Integration Engineer

# **Software Integration Engineer****Location: Bristol, UK****Approach:** Hybrid Remote, typically 2-3 days per week in the office**Contract:** Permanent, full-time**Rosenxt** is revolutionising subsea robotics and autonomous systems, and we’re building a world-class engineering team at our Bristol location to d ...

Software Engineer C++

Senior C++ Engineer – AI Scale Up - High Comp + Equity Atarus has partnered with a fast-growing, venture-backed AI startup that's on the look out for a C++ Engineer to join their team. What You’ll Be Working On Developing edge applications for vision data processing on com ...

Engineer, Software Engineering

About us At National Grid, our commitment to a cleaner, greener energy future is powered by the dedication and ingenuity of our people. Join our team as a Backend Software Engineer and be a part of something bigger - where your unique skills and passions can make a real difference. Togeth ...

Software Engineer .Net

Software Engineer – Middlesbrough (Hybrid) Do you want to help shape software that affects thousands of lives? Purpose Our technology is used by thousands of companies and affects millions of lives. As a Software Engineer, you will be responsible for the quality of software deve ...

Software Engineer Nursling

Salary: £50,000 - 60,000 per year Requirements BEng/BSc and/or masters degree in an appropriate engineering, computer science, information systems or related subject. Knowledge of Sensor and Communication systems. Software engineering experience from R&D ...

Staff Software Engineer

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. The company values ethical principles and is redefining itself as a digital‑first, engineering‑led organisa ...

Systems Software Engineer

SECURITY CLEARANCE: Must have or be able to obtain security clearance eligibility to access UK Ministry of Defence establishments, working within ITAR and Export Control restrictions. LOCATION: Brize Norton, Carterton, Oxfordshire. HOURS: Full time - Mon-Fri 35 hours. What’s in it ...

Quantum Software Engineer

At OQC, we aren’t just theorising about the future; we’re building it. Born from a philosophy of bold innovation, we’ve successfully transitioned quantum computing from an academic dream into a commercial reality. The most exciting thing is that we’re just getting started. As a Quantum Software Eng ...

Staff Software Engineer

Position Summary Harness is a high‑growth company disrupting the software delivery market. Our mission is to enable the 30 million software developers worldwide to deliver code reliably, efficiently, securely, and quickly, increasing customers’ pace of innovation while improving the developer exp ...

Software Engineer I

About The Team Our teams are collaborative, forward thinking, and agile. We support multiple products with a challenging and exciting set of features and provide real opportunity for our teams to contribute to the success of the organisation. About The Role You will contribute t ...

Principal Software Engineer

Principal Software Engineer Pearson Carter are currently working with an established technology organisation developing advanced software solutions used by leading businesses worldwide. They are looking to appoint a Principal Software Engineer to help drive the evolution of a sophisticated, high- ...

Software Engineer .NET

Salary: £50,000 - 60,000 per year Requirements Deep understanding of Microsoft .NET C# and .NET Core Experience working with MySQL, MariaDB, or other data stores Understanding of containerisation technologies and message queues (e.g. RabbitMQ) Exposur ...

Principal Software Engineer

Principal Software Engineer We are looking for a highly experienced Principal Software Engineer with strong backend engineering expertise and a passion for scalable distributed systems. You will play a key role in shaping architecture, engineering standards, and technical direction across the pla ...

HTP Software Engineer

Software Engineer – Java Full Stack The Company: At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises empowering autonomy, promoting experimentation, and facilitating rapid learning to provide exceptional value to ou ...

Staff Software Engineer

About Foundation Health Foundation Health is transforming healthcare through an AI-powered digital pharmacy platform that seamlessly connects operational infrastructure with high quality patient experiences. Our mission is to transform patient centric care by connecting fragmented infrastructure, ...

Software Engineer Opportunities

Almac Group is a global leader in advancing human health. We provide a range of expert services across the drug development lifecycle to pharmaceutical and biotech companies, supporting them in finding treatments for patients. Skills and attributes Computer Science Softwar ...

Software Engineer Nursling

Salary: £50,000 - 60,000 per year Requirements BEng/BSc and/or masters degree in an appropriate engineering, computer science, information systems or related subject. Knowledge of Sensor and Communication systems. Software engineering experience from R&D ...

Software Controls Engineer

Our client’s is a leading energy transition, business supporting the most challenging requirements for power generation, grid stabilisation, and decarbonisation through electrification. Partner with the best: In this role, as a Controls Engineer you will designing rotating equipment contr ...

Senior Software Engineer

About the role We’re looking for a Senior Backend Engineer to build and scale Wise’s price comparison platform. Comparison is about transparency—helping customers understand the real cost of sending money and why Wise is the better choice. You’ll own the systems that collect pricing data from com ...

Senior Software Engineer

Salary: £45,000 - 85,000 per year Requirements You operate confidently at a deep technical level and enjoy working across a variety of technologies. You’re comfortable making informed architectural and engineering decisions, and you bring a forward‑looking mindset to how sof ...

Senior Software Engineer

Location: Hybrid / London (with flexible working) Salary: Competitive At FutureLearn, we’re passionate about the power of lifelong learning. We help learners from all over the world progress in their careers – and invest in their futures. We truly believe that up‑skilling is a worth ...

Senior Software Engineer

Senior Software Engineer (C++/Rust) - Up to 150,000 Title : Senior Software Engineer (C++/Rust) Company : Boutique Consultancy Location : Newcastle Pay : Up to 150,000 A deeply technical consultancy is getting ready to scale signif ...

Senior Software Engineer

Full time | 4-day workweek | Central London-Hybrid | £90k - £100k pa About us Climate Policy Radar is an independent non‑profit building open, credible data infrastructure and AI‑powered tools for climate, nature, and development action. Our data and tools help governments, resear ...

Senior Software Engineer

Java Backend Engineer - Greenfield Fintech | London (Hybrid) Multiple levels available: Associate to Senior Lead Location: London - on-site Build something that actually matters - from scratch. We're partnering with a high-growth fintech accelerator embedded within a major ...

Senior Software Engineer

Salary: £50,000 - 70,000 per year Requirements We are looking for an experienced C# and .NET engineer who is ready to step up into a senior lead position. We require experience mentoring junior engineers. We require experience with Microsoft Azure, Terraf ...

🚀 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