Backend Developer Java Spring Boot Python Jobs in London, UK

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 Backend Engineer Java/Python for Critical Systems

A global engineering consultancy is seeking a Backend Software Engineer to join their London team. The role involves designing and supporting high-reliability software platforms for complex systems, focusing on Java and Python development. Candidates should have a Bachelor’s or Master’s in Engineering, strong ex ...

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team Duration: 6 MonthsLocation: Toronto (Hybrid, 3x/week)We are looking for a Senior Software Developer for the Enterprise Appli ...

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team

Sr. Java (Spring boot) Developer with API and Microservices expertise to support our insurance client's Enterprise Application Integration team Duration: 6 MonthsLocation: Toronto (Hybrid, 3x/week)We are looking for a Senior Software Developer for the Enterprise Appli ...

Java Developer Hybrid, Core Hours, Great Benefits

Pharmacy2U Ltd is seeking a Java Developer to contribute to the development of new medical services. This role encompasses hands-on development, working within a microservices architecture, and maintaining existing healthcare services. Candidates should have experience with Java, Spring Boot, and cloud environme ...

Senior Backend Architect — Global Cloud Native SaaS

A leading cybersecurity company in London is seeking an experienced Backend Engineer to architect and design systems for a massive distributed network. The role demands at least 6 years of developing high scale SaaS microservices, proficient in Java, Go, or Spring Boot, and fluent in PostgreSQL, MongoDB, and Red ...

Senior Java Backend Engineer Cloud Native Microservices

A leading financial consulting firm is seeking a Senior Backend Engineer to design and build cloud-native applications with Java and Spring Boot. This role involves delivering high-impact solutions for Tier 1 financial institutions and managing CI/CD pipelines. The ideal candidate should have strong expertise in ...

Senior Java Microservices Engineer (Blockchain) – London

A financial services client is seeking a Senior Back-End Developer skilled in Java Microservices to work primarily onsite in London. You will design and maintain critical back-end components in a microservices architecture, collaborating with teams to deliver high-performance applications. This role requires exp ...

Junior Java Full Stack Engineer — Hybrid/Remote

Cognizant is looking for a highly motivated Full Stack Java Developer in Greater London. This role involves working on enterprise-grade applications, utilizing Java, Spring Boot, REST APIs, and building responsive UIs with Angular/React. The ideal candidate will have a Bachelor’s degree in Computer Sci ...

Senior Java Software Developer

Provide either a resume file or a linkedin profile Hype Studio is an independent enterprise software consulting firm serving the manufacturing and distribution industries in around the world. Leveraging our exceptional ERP expertise, deep industry experience, today’s best practices and a rigorous, prov ...

Senior Java Developer Capital Markets (Path to Lead)

Senior Java Developer - Financial Services, Capital Markets sought by city based organisation. Essential 7+ years Java development experience in Financial Services, Capital Markets Clear progression to Head of Engineering role within 12 - 24 months Strong experti ...

Senior Java Developer Financial Services, Capital Markets

Senior Java Developer - Financial Services, Capital Markets sought by city based organisation. Essential 7+ years Java development experience in Financial Services, Capital Markets Clear progression to Head of Engineering role within 12 - 24 months Strong experti ...

Senior Lead Full Stack Engineer: Secure, Scalable Web Apps

A global financial services leader is seeking a Senior Lead Full Stack Software Engineer to contribute to its Cybersecurity team. This role involves designing and developing scalable web applications while ensuring quality and user experience. Candidates should have extensive experience in software engineering, ...

Software Engineer Platform

Join the Platform team to build the backbone of the Wise experience. You will work on scaling global payment infrastructure, improving system reliability, and automating processes to enable Wise's mission of money without borders. Focus on high-performance backend systems and distributed architecture. ...

Principal Platform Engineer: AI, Reliability & Leadership (Hybrid/Remote)

LexisNexis Risk Solutions is looking for a Principal Engineer to guide technical direction across teams, focusing on system modernization and AI applications. This full-time role involves collaborating with various teams to enhance reliability and scalability of platforms. Candidates should have extensive backen ...

Principal Platform Engineer: AI, Reliability & Leadership (Hybrid/Remote)

LexisNexis Risk Solutions is looking for a Principal Engineer to guide technical direction across teams, focusing on system modernization and AI applications. This full-time role involves collaborating with various teams to enhance reliability and scalability of platforms. Candidates should have extensive backen ...

Senior Software Engineer Java Inside IR35

Location: London (3 days onsite / 2 days remote) Contract: 6–12 month rolling contract Start: Immediate / ASAP Overview We are seeking five Senior Java Engineers to join a high-performing engineering team within a leading financial services ...

Senior Java Software Engineer

A growing capital markets technology business is looking to hire a Senior Java Developer to play a key role in building and evolving a cloud-native post-trade platform used across client reporting, APIs, workflow management, and trading operations. This is a hands-on engineering role with strong exp ...

Java Full Stack Engineer (React/Angular) – Hybrid & AI Enabled

A leading global technology consultancy is seeking an experienced Java FullStack developer (ReactJS & AngularJS) to oversee project delivery and contribute to high-quality software solutions. The ideal candidate will have strong expertise in the banking domain, Java 17+, and Spring Boot, along with familiarity i ...

Java Software Developer – Hybrid SaaS Role with Growth Perks

A leading technology SME in London seeks a motivated Java Software Developer with 1-3 years experience in software development. The role offers the chance to develop SaaS solutions in a hybrid environment while collaborating on projects for UK government functions. The ideal candidate will have experience with J ...

Java Developer – Hybrid, Cloud & Microservices (GCP/AWS)

Pharmacy2U, the nation's largest online pharmacy, is looking for a Java Developer to enhance medical services and optimize existing systems. The role is primarily hybrid, requiring visits to the office in central London twice a month. Candidates should have proficiency in Java 1.8+, Spring Boot, and cloud enviro ...

Platform Engineer: Backend Java for Data Fabric

A leading consultancy firm is looking for a Backend Java Developer for a hybrid role in London. You will build core backend services for a Data Fabric platform, implementing rule engines and working with SQL parsing and distributed data systems. Ideal candidates should have strong experience in Java (17/21), Spr ...

Engineering Manager – Global Platform Services (Java)

Epassi is seeking an Engineering Manager for their Global Platform Services team in Greater London, UK. This role involves leading a team of 6–10 backend engineers to build foundational services and APIs for their product ecosystem. The ideal candidate has over 5 years of software engineering experience, particu ...

Software Engineer – Equity Derivatives Pricing & Risk System.

Software Engineer – Equity Derivatives Pricing & Risk SystemWe are seeking a highly skilled and motivated Java Developer with a strong background in Equity Derivatives to join our team in London. In this role, you will play a pivotal part in building and enhancing Equity Volatility Risk and P&L system that su ...

Software Engineer – Equity Derivatives Pricing & Risk System.

Software Engineer – Equity Derivatives Pricing & Risk SystemWe are seeking a highly skilled and motivated Java Developer with a strong background in Equity Derivatives to join our team in London. In this role, you will play a pivotal part in building and enhancing Equity Volatility Risk and P&L system that su ...

Platform Backend Java Engineer (Hybrid, Fixed Term)

A technology consulting company is seeking a Backend Java Developer to build core backend services in a hybrid role based in Birmingham. You will implement policy engines for data governance and work with distributed data platforms. The ideal candidate has strong Java and Spring experience, expertise in SQL pars ...

Senior Java Software Engineer

Overview Senior Software Engineer – Backend (Java) | 6-Month Contract | Hybrid – 2 Days in Office | £600 p/d Outside IR35 I’m working with a leading technology consultancy looking for a Senior Backend Engineer to join a high-performing team delivering cutting-edge, cloud-native plat ...

Lead AI Platform Engineer – Backend & AI Apps

London Stock Exchange Group is seeking a Lead Engineer to drive development of secure, scalable digital products. The role entails backend and frontend system management, guiding teams, and implementing engineering best practices. Candidates should have over 5 years of experience, knowledge in Java/Kotlin, Sprin ...

Senior Java Developer: Path to Head of Engineering (Hybrid)

Harrington Starr is looking for a Senior Java Developer to join their hybrid team in London. This is a unique chance to develop vital post-trade technology while leading a team, with a clear progression to Head of Engineering in 24 months. The ideal candidate has over 7 years of experience in Java deve ...

Senior Software Engineer

Looking for a Senior Java Developer that has worked with Kotlin. The ideal candidate should be passionate about clean code and scalable solutions. This opportunity will allow you to design robust Microservices Architecture, within an automated data-heavy environment. This will be an i ...

Software Engineering Full Stack Developer (Java) Professional Multiple Cities

At IBM Consulting UK FutureNow, you’ll build a career at the forefront of hybrid cloud and AI, working with leading clients across the public and private sectors. You’ll collaborate with top industry professionals, gain hands on experience with cutting edge technologies, and deliver solutions that ...

Junior Software Developer Java, C#, Python (London)

Vantage Point in London is looking for a Junior Software Developer proficient in Java, C#, and Python. In this full-time role, you will write and maintain code for innovative applications and systems. Ideal candidates will demonstrate their coding skills and familiarity with the mentioned technologies. A competi ...

Java Backend Developer London, UK (Fully REMOTE)

Role: Java Backend Developer with Data PlatformType: 6 Months ContractLocation: London, UK (Fully REMOTE)Working Model: Fully REMOTEPayrate: £450 - £550 per Day on PAYE£530 - £630 per Day on RUPAYE£650 - £750 per Day on Inside IR35 via UmbrellaThe Role: Join our Data Infra ...

Backend Java Developer Public Sector | Flexible Work

IBM is seeking a Backend Java Developer in the Greater London area to design and deliver high-quality applications using Java/JEE and modern web technologies. You will develop secure, reliable backend solutions, collaborate with technical teams, and contribute to DevOps practices. The role offers benefits such a ...

Backend Java Developer – Data Fabric / Platform Engineering

Backend Java Developer – Data Fabric / Platform Engineering Location: London (Hybrid)Employment: PermanentSalary: £70,000 – £90,000 base (dependent on experience) If your idea of backend engineering is more than CRUD APIs and microservices boilerpla ...

Backend Java Developer – Data Fabric / Platform Engineering

Backend Java Developer – Data Fabric / Platform Engineering Location: London (Hybrid)Employment: PermanentSalary: £70,000 – £90,000 base (dependent on experience) If your idea of backend engineering is more than CRUD APIs and microservices boilerpla ...

Java Backend Developer AI Powered APIs (Remote)

YO IT Consulting is seeking a Java Developer - AI Expert for a part-time remote role. You will design, implement, and improve backend APIs while collaborating with AI research teams. Responsibilities include optimizing REST and GraphQL endpoints, ensuring API security, and participating in testing of AI-powered ...

Java Full Stack Developer | Frontend & Backend Engineer

Java Script Works, located in Greater London, is looking for a skilled Java Full Stack Developer. The ideal candidate should be proficient in Java for back-end development and experienced in front-end technologies like HTML, CSS, and JavaScript, alongside frameworks such as React or Angular. Responsibilities inc ...

Backend Developer

London, United Kingdom | Posted on 27/05/2026 About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of ove ...

Software Engineer Full Stack Java HealthTech

Software Engineer Full Stack Java - HealthTech This range is provided by Client Server. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Client Server Software Engin ...

Senior Java Software Engineer

Senior/ Java Backend Engineer - Greenfield Fintech (London Hybrid) Different Levels available from Associate to Senior Lead! Location: London We’re working with a high-growth fintech accelerator within a major financial services organisation, building brand-new consumer produc ...

Senior Java Full Stack Engineer React, AWS & DevSecOps

Tata Consultancy Services is looking for a Senior Full Stack Developer to join their team in London. In this hybrid role, you will be responsible for delivering high-quality, secure full-stack services using Java and React. Your work will involve designing and building APIs, collaborating with engineering teams, ...

Back End Developer

Senior Back-End Developer (Java Microservices) Duration: 12 months Location: London, UK Working hours: Full time Onsite requirements: 4 days in the office Day Rate / Hourly Rate: £84.39 per hour PAYE (inclusive of holid ...

Lead AI Platform Engineer | Full Stack & AI in Production

LSEG is seeking a Lead Engineer to drive the development of both backend and frontend systems. The successful candidate will have over 5 years of software engineering experience with strong skills in Java/Kotlin, Spring Boot, and AI feature integration. This role combines hands-on engineering and technical leade ...

Lead Developer

Lead Java Developer Business Unit: FTSE Russell – Index Platform Company: London Stock Exchange Group (LSEG) We are seeking a highly skilled and hands‑on Lead Java Engineer with AI proficiency to help build the next generation FTSE Russell Index Platform. This plat ...

Full Stack Developer — Liferay DXP, Java & React

A leading technology consulting firm in London is looking for a Full-Stack Developer. The role involves designing and developing web, eCommerce, and mobile solutions, with a focus on Liferay DXP and modern technologies like Java, Spring Boot, and React. Candidates should have a Bachelor's degree and at least 2 y ...

Engineering Lead Java/Spring Microservices

A global information and analytics company is seeking a Software Engineering Lead in Greater London. The role involves managing a team of Software Engineers while enhancing productivity through collaboration and innovation. The ideal candidate will bring expertise in Java, Spring Boot, AWS, and Microservices alo ...

Technical Lead Active SC, Java

Technical LeadUp to £550 per day (Inside IR35)London / Remote3 months initially My client is an instantly recognisable consultancy who urgently requires a Technical Lead/Lead Developer, with Active Security Clearance (SC), and with proven team lead experience to join a business-critic ...

Technical Lead Active SC, Java

Technical LeadUp to £550 per day (Inside IR35)London / Remote3 months initially My client is an instantly recognisable consultancy who urgently requires a Technical Lead/Lead Developer, with Active Security Clearance (SC), and with proven team lead experience to join a business-critic ...

Senior Software Developer

As a Senior Software Engineer (Backend), you will play a key role in designing and building scalable, cloud-based services using Java and Spring Boot. You’ll work closely with your manager, architecture team and teammates to deliver high-quality backend systems that power critical business functionality. < ...

Senior Back end Engineer at Vega

This is a job that we are recruiting for on behalf of one of our customers. To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask. Senior Back-end E ...

🚀 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

    Backend Developer Java Spring Boot Python Jobs in London Job Search Guide, Trends and Insights