• United Kingdom Jobs Expertini profile avatar

    • 1,360,540+ 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
    Explore Leading Employers
    High-Paying Careers
    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.

    1. Expertini
    2. United Kingdom
    3. Jobs
    4. Lead Software Engineer Full Stack Java React Jobs in United Kingdom

    5. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Platform Engineer (Java) – Scale Core Backend Systems

    hackajob is seeking a Platform Engineer in the United Kingdom. You will contribute to core backend systems that power our innovative products. The role requires building and scaling systems, writing production-level code, and collaborating with other engineers. Applicants should have 7+ years of backen ...

    Senior Java Microservices Engineer | SC Cleared (Hybrid)

    Opus Recruitment Solutions is seeking an experienced Senior Software Developer to join a high-profile government programme. This role involves designing and building scalable, high-performing systems within a microservices architecture. The successful candidate will have strong commercial experience wi ...

    Java Backend Engineer — Spring Boot, Microservices, GCP

    Tata Consultancy Services is seeking a Java Backend Engineer to design, develop, and maintain backend microservices using Java and Spring Boot. The role involves building secure RESTful APIs and cloud-native solutions on Google Cloud Platform while ensuring code quality through testing and reviews. The ...

    Native Mobile Engineer (iOS & Android) + Java Backend

    KBC Technologies Group is seeking an experienced Native Mobile Developer with expertise in developing scalable applications for iOS and Android. This role requires strong backend development skills in Java and the ability to integrate mobile apps with robust backend services. The ideal candidate should ...

    Data Platform Engineer

    United Kingdom - London Posted: 05/05/2026 Salary: Negotiable ID: 37322_BH Apply OR Data Platform Engineer We are seeking experienced Mid to Senior Java / Data Platform Engineers to support a high-profile client engagement. The role will focus on ...

    Developer Platform Engineer

    hackajob is collaborating with Barclays to connect them with exceptional professionals for this role. Join Barclays as a Developer Platform Engineer and play a key role in shaping the future of our new developer platform. In this role, you'll have the opportunity to develop innovative applications, ...

    Junior / Mid Level DevOps Engineer

    DevOps Engineer (Junior or Mid-Level)5 days per week Guildford offices (Next to train station)Competitive salary and excellent benefits packageStratospherec are working with a Guildford based Enterprise Management software company who have thousands of clients across the UK and Europe.This Junior ...

    Staff Software Engineer, Motion Planning

    Job Description We are looking for an experienced Staff Software Engineer who can design and build best‑in‑class planning systems for autonomous driving in structured, low‑speed environments. In this role, you'll be the technical backbone of the planning stack — owning the design ...

    Staff Software Engineer, Motion Planning

    Job Description We are looking for an experienced Staff Software Engineer who can design and build best‑in‑class planning systems for autonomous driving in structured, low‑speed environments. In this role, you'll be the technical backbone of the planning stack — owning the design and impl ...

    Staff Platform Engineer Cloud Native Microservices Leader

    A leading analytics solutions provider in the United Kingdom seeks an experienced Staff Software Engineer to design and build core platform services that enable advanced analytics for industrial processes. You will collaborate with cross-functional teams to enhance platform scalability and reliability, introduce ...

    Senior Payments SDK & Backend Engineer

    Parking Network BV is looking for a skilled Software Engineer to join their Payments Processing group, focusing on secure and efficient payment solutions. The ideal candidate will have strong experience with C# or Java and a solid understanding of the Software Development Life Cycle. Responsibilities i ...

    National Security Software Engineer Hybrid, DV Clearance

    Forwardrole is seeking a Software Engineer specializing in National Security to support secure applications and backend services. The role requires significant technical skills including Java, Python, and cloud-native development. The organisation has a strong focus on security, requiring active DV/eDV cleara ...

    Senior AI Engineer — Production ML for Workday

    Jentic Technology Limited is seeking a Senior AI Engineer to bridge data science and software engineering within the Workday Practice. Your role will focus on delivering scalable AI solutions that enhance the Workday product offerings. You will collaborate with data scientists and engineers to integrate AI mo ...

    Senior Mechanical Design Engineer

    Mechanical Design EngineerPosition: Mechanical Design EngineerLocation: Castle Donington - Hybrid/FlexibleContract: 6 Months, Outside IR35Type: Full-TimeThe RoleThis is a contract outside IR35 role working on a project involving designing a range of turbomachinery ...

    Equities Data Engineer Java/Python (Equity Swaps)

    Scope AT Limited is seeking a Developer to join their market-leading equity swaps team in Glasgow. This role requires 2-5 years of commercial software development experience, with a preference for Java, Python, or PERL. The position involves working on data lineage and requires experience within the f ...

    Senior Java Engineer Cloud Native Microservices (Hybrid)

    A leading recruitment agency is looking for an experienced Senior Java Engineer to join a fast-growing technology company in London. This hybrid position offers a salary up to £100,000 and requires strong experience in Java, Spring, and Kafka. Candidates should be proficient in building cloud-native microservice ...

    Splunk Infrastructure Engineer in Edinburgh NatWest Group

    Splunk Infrastructure Engineer Edinburgh, United Kingdom Tech stack Python Shell Splunk Infrastructure The skills you’ll need To thrive in this role, you’ll need experience in software development or automation scripting, such ...

    Test Automation Engineer

    Responsibilities Develop, implement, and execute comprehensive test plans for GOV.UK digital services. Identify key testing objectives and ensure coverage of user requirements across different environments. Functional & Non-Functional Testing: conduct functional, regression, ...

    Senior Data Platform Engineer Build, Ship, Run (Hybrid)

    The core stack focuses on Python, TypeScript, GraphQL, AWS, and Kubernetes. However, we encourage breaking the mold and exploring new technologies if you believe they are superior. The role is hybrid... select the best solution and the technology to get it done; build it, ship it, run it. Jo ...

    Data Engineer

    Data EngineerLondon12 Months Contract £400 a day Inside IR35 An established leader in the fintech space is urgently hiring a Data Engineer for a 12-month contract. In this role, you will help design and optimize high-throughput data frameworks that feed advanced machine learning m ...

    Backend Java Developer (IT) in London Nexus Jobs Limited

    Backend Java Developer (IT) London, UnitedKingdom Posted 9 months ago We are urgently looking to recruit a Java backend Developer with at least 5 years of experience. The ideal candidate must have strong experience in Data Structures and Algorithms. Additionally, experience with S ...

    Java GUI Developer Swing / MOD / Defence

    Required Skills Java MOD Linux UI Job Summary JavaDeveloper - Real-time Systems Farnborough, Surrey-5daysonsite UKPassportrequired-eligibleforMODclearance Standard 8 is re ...

    Senior Software Engineer Scale Global FinTech Platforms

    Bloomberg is seeking a skilled software engineer to join our Buy-Side team in London. This role involves end-to-end ownership of the software development lifecycle, where you'll design and build distributed, scalable systems that drive investment decisions. The ideal candidate will have 4+ years of exp ...

    Java & AWS SDE — Build Scalable Cloud Services for IoT

    Ring is seeking a passionate Software Development Engineer to create next-generation apps and cloud services. You will work closely with product managers and engineers to design and develop features that enhance customer experience and interaction. This role offers the chance to impact the setup proces ...

    Hybrid Java Backend Engineer Microservices & Spring Boot

    Net2Source (N2S) is seeking a Software Engineer to build world-class software in Burgess Hill, UK. The role requires expertise in Java, Microservices, Spring Boot, and various database technologies. An essential part of the position includes debugging, automating deployments, and scaling applications according t ...

    Backend Engineer for AI Startup — Ownership & Impact

    An innovative AI startup in Greater London is seeking a Software Engineer to join its high-caliber team. In this role, you will work on backend systems integrating with LLMs, having direct conversations with customers and shaping products that make a real impact. Ideal candidates should have strong experience in ...

    AVP, Java Engineer – Credit Risk Analytics (Hybrid)

    Citi is looking for a skilled Software Engineer to join the Wholesale Credit Risk Analytics team in Belfast. In this role, you will work on critical risk management systems, creating solutions to support the bank’s stress testing functions globally. The ideal candidate should have strong Java and AI to ...

    AVP Software Test Engineer – Hybrid Belfast

    Citibank (Switzerland) AG in Belfast is looking for a Software Test Engineer (AVP) to join their Global Fixed Income Trade Processing Team. The ideal candidate will have strong experience in automation testing (Selenium/Cypress), Java programming, and the ability to deliver testing strategies to ensure software ...

    Market Data Software Engineer Analytics & Data

    TradingHub in Greater London is seeking a Software Engineer focused on developing and supporting market data environments. The successful candidate will work alongside pricing quants and risk strategists, contributing to data analytics integral to TradingHub's products. Ideal applicants should have exp ...

    Staff Software Engineer Sterling OMS & SIP Expert

    Infoplus Technologies UK Ltd seeks a Staff Software Engineer to join their Software Engineering team. This role involves working on innovative solutions for millions of customers while driving the transformation into a digital-first organization. The ideal candidate will have extensive experience with ...

    Senior Solutions Engineer Post Sales (Remote)

    Qualcomm is seeking a Software Application Engineer based in the UK to provide technical expertise and support for the Edge Impulse platform. This remote role involves collaborating with customers and stakeholders to develop solutions and communicate technical features effectively. The ideal candidate ...

    Senior Software Engineer: Scalable Backend for Mobility

    Metropolis in Stockport is seeking a Senior Software Engineer to join its AeroParker team. This role entails designing and building backend services, mentoring engineers, and driving product direction while leveraging technologies like Scala and Java. The ideal candidate will have 7+ years of experienc ...

    Senior ML QA Engineer — Test Automation & CI/CD

    A leading AI compute firm in Cambridge is looking for an experienced software engineer to design and validate high-quality software systems. The ideal candidate emphasizes maintaining code quality and enjoys building reliable systems. Responsibilities include developing automation for a complex ML software stack ...

    T24 Transact Migration Engineer

    Salary: £? - ? per year Requirements Experience in Temenos T24/Transact, with exposure to recent releases; R21+ preferred and R24+ highly desirable Proven experience in TAFC to TAFJ migration programmes, including impact assessment, gap analysis, and code conversio ...

    Staff Platform Engineer, UK

    We’re looking for a curious, rigorous, problem‑hungry platform engineer who codes to help Ashby scale to the next level. Ashby builds software that lets talent teams streamline hiring, and we need an engineer who can build the reliable, secure, and fast infrastructure that supports this growth. We ...

    Staff Platform Engineer, UK

    We’re looking for a curious, rigorous, problem‑hungry platform engineer who codes to help Ashby scale to the next level. Ashby builds software that lets talent teams streamline hiring, and we need an engineer who can build the reliable, secure, and fast infrastructure that supports this growth. We ...

    Staff Platform Engineer, UK

    We’re looking for a curious, rigorous, problem‑hungry platform engineer who codes to help Ashby scale to the next level. Ashby builds software that lets talent teams streamline hiring, and we need an engineer who can build the reliable, secure, and fast infrastructure that supports this growth. We ...

    Staff Platform Engineer, UK

    We’re looking for a curious, rigorous, problem‑hungry platform engineer who codes to help Ashby scale to the next level. Ashby builds software that lets talent teams streamline hiring, and we need an engineer who can build the reliable, secure, and fast infrastructure that supports this growth. We ...

    Staff Platform Engineer, UK

    We’re looking for a curious, rigorous, problem‑hungry platform engineer who codes to help Ashby scale to the next level. Ashby builds software that lets talent teams streamline hiring, and we need an engineer who can build the reliable, secure, and fast infrastructure that supports this growth. We ...

    Senior JavaScript Engineer in Charing Plexus Resource Solutions Ltd

    Collaboration with Design Team You will collaborate with our design team on feature ideation and user experience. Your role will involve building and maintaining TypeScript components using React, Node, and NextJS. Additionally, you will be responsible for translating Figma designs into modular, reu ...

    Senior Software Engineer Backend & Microservices

    International Baccalaureate Organization is looking for a Senior Software Engineer responsible for developing and supporting essential business systems for global stakeholders. You will work on full stack development with a focus on backend tasks, while also contributing to frontend development. Your r ...

    Senior Frontend Engineer: AI Driven Data UI & Ownership

    Sivara GmbH is looking for a Frontend Engineer / Full Stack Product Engineer based in the UK to enhance customer interactions with our software. This role emphasizes ownership of the frontend codebase and developing impactful customer-facing products. You will work closely with leadership, focusing on AI inte ...

    Mid Senior Mobile Engineer

    Mid-Senior Mobile Engineer – Would you like the opportunity to work for a market leading organisation? You’ll be Mid- Senior Mobile Engineer working mainly on apps, using Kotlin Multiplatform (KMP) to build features that work on both Android and iOS. You’ll take ownership of complex technical work and help im ...

    Android Developer Fintech in London Quant Capital

    Android Developer – Fintech London, United Kingdom Posted 10 months ago This is a job posted by our partner Jooble Tech stack Java MVP Android Kotlin Below is a snippet of the job description. To read the full text, please click on the Appl ...

    Scala Developer

    Scala DeveloperMy Global IT consultancy is looking for a mid level Scala Developer to join their inhouse development team on a perm basis.Essential Skills4+ years experience in the IT Industry as a Scala developerFull-stack or backend technical background with experience with Scala, J ...

    Frontier Engineer (Deployments) (up to £130k)

    Imagine a world where existing infrastructure becomes intelligent, without costly overhauls. This company builds a privacy‑first platform that transforms legacy sensor systems into real‑time operational intelligence, detecting threats and surfacing insights from existing cameras and networks. Their technol ...

    Senior Software Engineering Manager

    Company Overview At Motorola Solutions, we believe that everything starts with our people. We’re a global close-knit community, united by the relentless pursuit to help keep people safer everywhere. We build and connect technologies to help protect people, property and places. Our solutions foste ...

    Senior Java Developer Hybrid (Newcastle) & Microservices

    A leading consulting firm is seeking a Senior Java Developer in Newcastle. In this hybrid role, you will mentor junior developers and lead best practices in software development. The ideal candidate has extensive experience in Java (8 to 17), Spring frameworks, and strong leadership skills. Benefits include 25 d ...

    🚀 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 →

    💡 Tools that really enhance your application chances and career growth.

    Go to Your Dashboard →

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