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
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

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 ...

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 ...

AI/ML Software Engineer (Europe)

AI/ML Software Engineer -  Healthcare – Full-Time - Remote (from EUROPE) – Job ID 26AIML302 Description Serious Development is a boutique healthcare strategy, product, and software engineering firm. We partner with healthcare organizations ...

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 ...

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 ...

Azure & M365 Cloud Engineer — Hybrid, Security Stack

beaumont is recruiting for a cloud-focused role in Newcastle upon Tyne. You will engage closely with senior architects and the Technical Director, focusing on Azure and Microsoft 365 transformations, implementing security tools, and designing hybrid architectures. Ideal candidates will bring strong ski ...

Linux Systems Engineer Python & Sci Stack (London)

Job Search Place Limited in London is seeking a Linux Systems Administrator to provide financial technical and operational support. You will collaborate with motivated developers and infrastructure engineers to deliver high-quality solutions. The ideal candidate will possess a strong background in Linu ...

Federal Support Engineer, Elastic Stack — Night Shift

A leading technology company is looking for a Support Engineer to provide expert-level technical support for US Federal customers. You will be responsible for resolving technical issues, maintaining customer relationships, and driving improvements in support processes. This position requires Linux/Unix experienc ...

Hands On Security Engineer — Banking, Microsoft Stack

La Fosse is seeking a hands-on Security Engineer to join their growing security function within a specialist banking environment in Greater London. This role allows you to maintain technical responsibilities while owning the technology stack and driving security maturity. The ideal candidate will have ...

Data Engineer : Commodities Risk : Azure / Microsoft Stack

Overview This is an exciting opportunity to join a rapidly expanding Energy Trading & Commodities house right in the heart of Kensington. We are looking for a talented a Data Engineer who has a real focus with risk analytic workflows – building, managing and optimising. You will play a key role in ...

Senior Private Cloud Engineer (Azure Stack HCI)

Position Description: At CGI, we help shape the future of secure digital services that support national defence and frontline operations. As an Azure Cloud Engineer within our Space, Defence & Intelligence business unit, you will play a key role in supporting and evolving a globally deplo ...

Client‑Facing AI Engineer, Microsoft AI Stack

Avanade Inc. is seeking an AI Engineer in Greater London to design, build, and deliver advanced agentic AI solutions. This hands-on, client-facing role requires expertise in Microsoft technologies to solve complex business challenges through AI. Responsibilities include collaborating with clients, developing AI ...

Senior Private Cloud Engineer (Azure Stack HCI)

Position Description: At CGI, we help shape the future of secure digital services that support national defence and frontline operations. As an Azure Cloud Engineer within our Space, Defence & Intelligence business unit, you will play a key role in supporting and evolving a globally deplo ...

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 ...

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, ...

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 ...

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 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 ...

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 ...

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 ...

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 ...

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 ...

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 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 ...

Software Developer Prime Services

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four c ...

Front End/Web Developer in Northampton Engine Creative

Front End/Web Developer Northampton, UnitedKingdom Tech Stack: React Front-end JavaScript Job Description Confident that every obstacle presents an opportunity for growth. Ideal Candidate An ideal candidate would ...

Senior 3D Frontend Engineer – Remote/Hybrid

## Senior Frontend Developer (3D)Applylocations: London, GBR: Toronto, ON, CANtime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 26WD97294**Job Requisition ID #**26WD97294**Position Overview**As a **Senior Frontend Developer (3D)**, you will work at the intersection of technical engi ...

Senior Frontend Developer (3D)

## Senior Frontend Developer (3D)Applylocations: London, GBR: Toronto, ON, CANtime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 26WD97294**Job Requisition ID #**26WD97294**Position Overview**As a **Senior Frontend Developer (3D)**, you will work at the intersection of technical engi ...

Software Engineer Python Ubuntu Pro client graduate level

Join to apply for the Software Engineer - Python - Ubuntu Pro client - graduate level role at Canonical Join to apply for the Software Engineer - Python - Ubuntu Pro client - graduate level role at Canonical Canonical is a l ...

AI Software Developer

AI Foundry Software Developer - Newcastle, full time in office role A firm providing bespoke technology solutions to businesses operating in the banking and financial services industries are seeking an AI Foundry Software Developer to join their rapidly expanding team in Newcastle. This role is par ...

AI Software Developer

AI Foundry Software Developer - Newcastle, full time in office role A firm providing bespoke technology solutions to businesses operating in the banking and financial services industries are seeking an AI Foundry Software Developer to join their rapidly expanding team in Newcastle. This role is par ...

PHP Laravel Software Engineer — SaaS & AI Tools

A global technology company in the United Kingdom is looking for a motivated Software Engineer to construct and enhance systems using PHP and Laravel. You will play a key role in writing production-ready code and improving existing applications while collaborating with senior developers. The ideal candidate has ...

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 JS Engineer: GraphQL/TS, Hybrid 6mo Contract

A tech talent partner seeks a Mid-Senior Full Stack JS Software Engineer to design GraphQL APIs and TypeScript services. The role involves working in an Agile environment, mentoring junior engineers, and shaping cloud-native infrastructure. The position is hybrid, based in West London, with a focus on security a ...

Senior Python Engineer Internal Tools & Observability

A leading Fintech company in London seeks a Software Engineer to join their technology team. This role involves designing scalable Python-based tools and enhancing internal platforms that support high availability and reliability. Required skills include expertise in Python, Linux systems, and observability tool ...

Backend Engineer in London LA International Computer Consultants Ltd

Staff-Level Full-Stack Software Engineer Location: 108 E 16th Street, New York, NY 10003 Salary: £130,000 - 143,000 per year Requirements: Strong experience building secure, scalable backend systems in Python and/or Go Deep understanding of contai ...

Backend Engineer in London LA International Computer Consultants Ltd

Staff-Level Full-Stack Software Engineer Location: 108 E 16th Street, New York, NY 10003 Salary: £130,000 - 143,000 per year Requirements: Strong experience building secure, scalable backend systems in Python and/or Go Deep understanding of contai ...

Software Engineer, Media Finance Platform

A media technology company in the UK is seeking a Software Engineer to join their team. The role involves designing, developing, and maintaining high-quality software solutions while collaborating with a cross-functional team. Candidates should have a Bachelor's degree in Computer Science and over 3 years of exp ...

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 ...

Tech Titans Wanted! Computing Teacher (Kingston School) in London Wayman Learning Trust

Tech Titans Wanted! Computing Teacher (Kingston School) London, United Kingdom Posted 12 months ago This is a job posted by our partner Jooble Tech stack Web Development Java Python Coding Curriculum Development <p ...

🚀 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