18,801+ Java Developer Java React Springboot Jobs in London, UK — Local Employers Hiring June 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

Platform Engineer Operational Data & Event Systems

Apple Inc. seeks a Developer Platform Engineer in London to build resilient software systems for Apple Pay and improve internal platforms. Responsibilities include advocating for platform solutions, enhancing engineering practices, and collaborating with global teams. The ideal candidate has experience ...

Senior C# .NET Backend Engineer – High Impact, London Office

Client Server is seeking an experienced Senior Software Developer / Software Engineer (C# .Net) to join their team in London. In this full-time role, you'll work in plush City offices and enjoy a competitive salary up to £150k plus bonuses and benefits. You'll leverage your expertise in C#, ASP.Net and ...

C# .NET API Engineer – SQL, Onsite London

Client Server is seeking a C# Developer/Software Engineer to join their London office on a full-time basis. The ideal candidate will have strong database knowledge (SQL or Oracle) and a solid understanding of Computer Science principles. This role offers a competitive salary of up to £90k and additional benef ...

Senior SDET — Scale QA Automation (Hybrid)

Omaze, Inc. is seeking a Senior Software Developer in Test (SDET) in Holborn, London. In this hybrid role, you will take ownership of quality engineering and test automation strategy, ensuring high confidence in releases while working collaboratively with engineering teams. The ideal candidate will pos ...

Enterprise SDR: AI Powered Pipeline Architect

Coder Enterprise in Greater London is searching for a Senior Sales Development Representative (SDR) to drive growth by generating quality pipeline for our Enterprise Account Managers. In this role, you will actively engage prospects, uncover pain points, and coordinate qualification calls to lead our EAMs tow ...

Head of Internal Platform & AI Driven DevEx

Dormont Manufacturing Co is looking for a Head of Platform to lead the delivery and evolution of its internal developer platform. This global (hybrid) role emphasizes delivering strategic value through platform as a product and driving AI integration across engineering. The ideal candidate will have ov ...

Senior BI Architect: Power BI & ERP Data Mastery

The Retail Partnership Ltd is seeking a Senior Business Intelligence Developer to own the BI environment in their London office. This role requires strong Power BI backend expertise and advanced SQL skills to manage data integrations within a fast-paced business. The successful candidate will manage th ...

Python Analytics Engineer — Insurance (Hybrid)

NACBA is seeking a skilled Python Developer to join their team in London. This hybrid position focuses on developing new features for the InsurSight platform, which assesses over £200bn of non-life insurance business. The ideal candidate will have substantial experience in Python development, familiari ...

Core Banking Platform Lead (Hybrid)

Onyx-Conseil is seeking a Technical Platform Owner to enhance their core banking platform's technical strategy. You will work closely with platform engineering teams, ensuring alignment with the company’s goals while enhancing the overall developer productivity for clients. The ideal candidate will be ...

Senior VueJS Frontend Engineer for Real Time IoT

IC Resources is seeking a Senior Frontend VueJS Developer to join their innovative technology team in London. In this role, you will develop frontend UI architectures for complex, large-scale systems that link real-world devices to modern cloud infrastructure. The ideal candidate will have strong exper ...

Lead Android Engineer: Architecture, Mentorship & Impact

Oliver Bernard is seeking a Lead Android Developer to join a consumer tech business in Greater London. You will lead the development of native Android applications using Kotlin and Jetpack Compose, work closely with product and design teams, and drive technical decisions. The ideal candidate has extens ...

Senior C++ Trading Systems Engineer

DV Trading LLC in Greater London is seeking an experienced software developer to join our DV Equities desk. In this role, you will lead the design and implementation of DV's core trading platform using C++ 17 and collaborate with cross-functional teams to enhance trading systems. The ideal candidate ha ...

Senior Backend Architect — Global Gaming Platform

IMAGE FRAME INVESTMENT (UK) LIMITED is seeking an experienced backend developer with over 8 years of experience, including 5 years in the gaming industry. This role involves providing technical support for overseas game projects and collaborating with global teams to optimize backend performance. The i ...

Senior Backend Engineer High Impact AI & Robotics

Oxford Dynamics is seeking a skilled backend developer to join their growing team in the Greater London area. The candidate will work on innovative AI and robotics projects, focusing on backend architecture and API development in a hybrid working environment. With a strong emphasis on security and reli ...

Senior Python Automation Engineer – Demo Data & CI/CD

Global Relay is seeking a Senior Python Software Developer to join their team in Greater London. You will design and maintain scripts for publishing demo data, collaborating closely with various teams to ensure seamless delivery of software. The ideal candidate has over 5 years of Python experience and ...

Lead SDET Architect — Test Automation & CI/CD

A leading financial technology firm in the UK seeks a Principal Software Developer in Test (SDET) to drive innovation in automation testing. This role involves leading the implementation of testing frameworks across financial projects, mentoring engineers, and collaborating with cross-functional teams. Candidate ...

High Rise Residential Design Manager

A reputable contractor and developer in Greater London is seeking a knowledgeable Design Manager for a residential scheme in South East London. This site-based role entails interrogating designs, liaising with authorities, and managing technical design approvals. Ideal candidates will have prior experience in si ...

UK & Ireland Growth & Partnerships Lead

A dynamic event technology company is seeking a UK Business Developer to join their expanding team. You'll be responsible for identifying sales opportunities, managing a sales pipeline, and executing deals within the UK musical events sector. With at least 3 years of experience and a strong network in the indust ...

Senior Software Engineer — Video Streaming & AI Tools

A leading media services company is seeking a Software Developer to join the ClearView Rush team. This role involves designing and building a video review platform, requiring expertise in video engineering and a collaborative work ethic. Candidates should possess significant software development experience, part ...

Senior Python Automation Engineer – Demo Data & Production

A leading technology firm in Greater London is seeking a Python Software Developer to design, develop, and maintain scripts for demo data publishing. You will work in a collaborative environment, assisting sales teams in demonstrating our services. The ideal candidate has extensive experience with Python and Pow ...

Hybrid .NET Backend Engineer — AWS, SQL & REST APIs

A fast-paced startup in Greater London is seeking a Back-End Developer to design and build robust server-side applications using .NET and C#. This role offers hybrid working and involves implementing critical business logic, developing RESTful APIs, and leveraging AWS services. The ideal candidate should have a ...

Impactful Full Stack .NET Engineer Hybrid London

A leading tech solution provider is seeking a Full-Stack .NET Developer with a focus on back-end to join their Beacon Technology team. This role involves developing and maintaining software aligned with the company’s tech strategy, requiring strong C#, .NET, and full-stack experience. The position is hybrid, req ...

Full Stack Engineer Hybrid + Benefits

A leading veterinary technology company is seeking a software developer to join their Revenue team in the UK. This role involves designing and implementing software for veterinary clinics, requiring strong analytical and problem-solving skills. The ideal candidate will have a computer science degree and at least ...

Growth Focused Frontend Engineer (Webflow) | Hybrid London

A leading fintech company in London is seeking a Web Developer to enhance their marketing infrastructure through A/B testing and data-driven web solutions. You will work in a hybrid environment, integrating Webflow with custom code and collaborating with cross-functional teams. Ideal candidates will have 3–5 yea ...

Lead AI Engineer Build Next Gen AI Systems

A pioneering AI-first company in the UK is seeking an AI/ML Developer to design and optimize innovative advisory products. The ideal candidate will have over 3 years of experience in AI/ML development, strong programming skills in Python, and familiarity with TypeScript. This role offers a competitive salary and ...

API Product Manager Shape the Next Growth Pill

A leading video tech company is seeking a Technical Product Manager to spearhead their API initiatives. This role involves collaborating with engineering teams, managing product lifecycle, and engaging with the developer community. Ideal candidates have 3+ years in product management with a focus on APIs, a stro ...

AI Content Operations Engineering Manager

A leading tech firm based in London or Oslo is seeking a Senior Engineering Manager to lead a talented team focused on AI-powered content operations. The ideal candidate will have experience in engineering management and a passion for developer tools. This is an opportunity to influence product direction and nur ...

Senior Software Engineer Flexible Hours & Security

A leading developer security platform is seeking a Senior Software Engineer to join their team in Greater London. This role involves designing and implementing high-quality software solutions while mentoring junior engineers. The ideal candidate will have at least 5 years of experience, proficiency in Go or Type ...

Senior Backend Engineer | Node.js, TypeScript | Hybrid

A dynamic software company based in London is seeking a highly experienced Lead Backend Developer. This role involves designing and building robust backend systems using Node.js and TypeScript. You will work closely with cross-functional teams to develop high-performance APIs and manage databases. Ideal candidat ...

Senior GPU Capture & Replay Engineer

A global gaming technology leader seeks a senior developer for the Advanced Technology Group. This role involves developing tools and technologies to enhance GPU performance for PlayStation platforms. Candidates should possess strong problem-solving and debugging skills, experience on consoles, and a passion for ...

Quantitative Data Platform & Risk Analytics Engineer

A leading global hedge fund in London is seeking a quantitative developer to manage data platforms and risk analytics systems. The ideal candidate will have 3-7 years of experience in quantitative development, strong skills in Python and SQL, and proficiency in C#. You will be responsible for monitoring services ...

Endur Technical Lead Consultant

A consulting firm in the energy sector seeks a Consultant with extensive technical expertise in Endur to lead project implementations and enhancements. Candidates must have over 10 years of industry experience, including 7+ years with Endur as a lead developer. Responsibilities include guiding clients in technic ...

Associate Content Designer: F1 Clash LiveOps (London)

A mobile games developer in London seeks an Associate Content Designer for the F1 Clash® racing title. Your responsibilities include configuring live events, conducting playtests, collaborating on asset integration, and ensuring engaging content delivery. You should possess strong attention to detail, a collabor ...

Senior Android Engineer Enterprise Apps & UX

An innovative tech company is seeking a Senior Android Developer to lead the development of enterprise-level Android applications. You will drive user experiences that meet high standards of quality and work on projects in sectors like Finance and Healthcare. Candidates should have strong experience in Kotlin an ...

Unity Mobile Games Engineer — Hybrid, Growth‑Driven

A creative mobile games company in Greater London is seeking a mid-level Games Developer to refresh their Sing King app and develop new gaming experiences. Candidates should have 3+ years of experience with Unity or other relevant software, possess strong problem-solving skills, and have a collaborative spirit. ...

Senior Backend Engineer: Scalable Green Energy Platform

A leading energy technology company in London is looking for an experienced backend developer to contribute to products that make energy more flexible for customers. You will need 5+ years in web application development, expertise in Python/Django, and the ability to work autonomously or collaboratively. The rol ...

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- ...

Entry Level C++ Software Engineer – Trading

A leading financial technology firm in the City of London is seeking a graduate Associate Software Developer (C++) to join their core development team. You will work on the flagship product, FlexTRADER, enhancing trading systems used by major investment banks. Ideal candidates will have problem-solving skills an ...

Energy Operations Software Engineer

A leading technology firm in Greater London is seeking a Software Developer to join the Operations Technology team. You will play a key role in supporting operational processing across various asset classes. This includes maintaining applications for post-trade operations and collaborating with stakeholders to d ...

Hybrid iOS Engineer – SwiftUI & AI Tools

A leading technology company in London is seeking a mid-level iOS Developer to join their Mobile Collective team. This role involves building user-focused iOS features and working collaboratively with product and design teams. Ideal candidates should have commercial experience with Swift, SwiftUI, and a solid un ...

Real Time AI Engineer Ground Ops, First Engineering Hire

A pioneering AI startup in London is seeking a Junior Software Developer to be the first engineering hire. You will design and implement real-time AI systems to improve airport ground operations. The role offers significant ownership in developing a platform that generates high-accuracy predictions for flight de ...

Lead Backend Engineer — APIs, Data & Cloud

A leading AI platform company in Greater London is looking for a skilled backend developer who excels in Python and has experience with Flask and FastAPI. This role offers the opportunity to take technical leadership on diverse projects while working closely with cross-functional teams. You will be responsible f ...

Principal AI Architect for Agentic Platforms

A deep-tech company in Greater London seeks a Principal AI Engineer dedicated to shaping AI-driven engineering workflows. You will build a platform for advanced simulation tools and lead innovative efforts in agent architecture and observability. The ideal candidate has over 4 years of platform engineering exper ...

Delta Lake Migration Lead (C++/Python) – Hybrid

BMLL Technologies is seeking a Lead Developer to oversee a pivotal technology migration. The role involves hands-on development primarily in C++ and Python, along with managing a small team in Agile sprints. You will collaborate closely with other market data teams and take part in quarterly planning sessions. B ...

Senior Go Backend Engineer Energy Tech, Cloud & Scale

Arenko, based in Greater London, is looking for a skilled backend developer to join their agile team. You will be responsible for developing backend services using Go and AWS, playing a crucial role in automating energy trading and managing data for a sustainable energy future. Ideal candidates will possess expe ...

Senior Embedded Systems Engineer – Firmware & Rack Mgmt

Fractile is seeking an experienced embedded systems developer in London or Bristol. You will develop critical firmware and services for management controllers while working with hardware and software teams to ensure reliability and observability of the systems. Ideal candidates should have over 3 years of indust ...

Senior Generative AI Engineer: LLMs, Vector DB & Spark

HCLTech is seeking a highly skilled Senior Developer specializing in Python and Generative AI to build scalable AI-driven applications in Greater London. The role requires strong experience with vector databases and Apache Spark. Responsibilities include developing robust APIs, managing data pipelines, and ensur ...

Data Centre Design Lead – Senior Delivery Manager

Falcon Green is seeking a Senior Design Manager for a large-scale data centre project in West London. The role requires over five years of experience in design and technical management with a developer or main contractor, along with a degree in Architecture or Engineering. Candidates should have a proven track r ...

Delta Lake Migration Lead Market Data (C++/Python)

BMLL is seeking a Lead Developer in Greater London to manage a small team for the migration to Delta Lake. You'll lead a cutting-edge tech project focused on performance improvements while integrating new data pipelines. The role combines hands-on C++ development with team management in an Agile setting. Ideal c ...

Software Engineer, Catalog Insights & Analytics

Klaviyo is looking for a Full-Stack Developer to join the Catalog Insights Team in Greater London. This role involves delivering product capabilities for their Marketing Analytics product and requires 2+ years of experience in a SaaS product. Candidates should be proficient in a modern programming language and 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

    Java Developer Java React Springboot Jobs in London Job Search Guide, Trends and Insights