Software Engineer Python Java Data 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 Security Engineer & Full Stack (React/Java)

A global financial services leader located in London seeks a Lead Security Engineer with expertise in delivering secure software solutions. The ideal candidate will design, code, and test applications using Java and React, resolve production issues, and ensure a secure, agile development process. Key qualificati ...

Trading Connectivity Backend Engineer

A leading technology firm in the digital asset market is seeking a Software Engineer to join their Trading Connectivity team in London. In this role, you will design and maintain high-performance backend systems that connect with various liquidity providers. The ideal candidate has 1-3 years of experience in sof ...

Video Quality Analysis Engineer Real Time ML

A fast-growing UK technology company is looking for an experienced Software Development Engineer to enhance video streaming quality and technology. You will design algorithms using Java, C++, or C# and focus on machine learning and computer vision techniques to improve video quality. The ideal candidate has over ...

Senior Reliability Engineer: Scale Microservices & Performance

Wise is seeking a Senior Software Engineer to join their Reliability Engineering team in Greater London. You will collaborate with software teams to enhance the reliability and performance of Wise products. This role requires a strong background in product engineering, microservices, Kubernetes, and hands-on exp ...

Backend Infrastructure Engineer: Scale & Secure Systems

A leading software company in Greater London seeks a Backend Software Engineer to build scalable and performant systems, tackling real-world problems with innovative solutions. The role involves collaborating across teams and working autonomously to create APIs and systems that support impactful products. Candid ...

Engineering Manager – Loyalty Platforms & Personalised Offers

M&S in Greater London is seeking a Senior Software Engineer to lead and mentor a high-performing software development team. The role requires experience in building scalable solutions and expertise in various technologies including Java and React. You will oversee project delivery while ensuring quality, reliabi ...

Cloud DevX Engineer — Firmware Testing & AI Tools

Amazon is seeking a Software Development Engineer to join the RBKS Developer Experience team in Greater London. In this role, you will design and build cloud services on AWS to improve testing processes and enhance developer workflows, using generative AI techniques where beneficial. Ideal candidates have experi ...

Senior Android Engineer Kotlin, Scale & Impact

A leading food delivery service in Greater London is seeking a Software Engineer to enhance their technology infrastructure. The role involves improving code structure and architecture, as well as leading projects in a collaborative environment. Ideal candidates will have over 3 years of experience in Android de ...

Quantitative Developer Fixed Income Asset Manager (Contract)

Quantitative Developer Fixed Income Asset Manager (Contract) An asset manager is improving their risk, P&L, and reporting systems and are looking for an experienced quantitative developer to face off to the traders and quantitative researchers to develop enhanced systems and data capabilities for ...

Quantitative Developer Fixed Income Asset Manager (Contract)

Quantitative Developer Fixed Income Asset Manager (Contract) An asset manager is improving their risk, P&L, and reporting systems and are looking for an experienced quantitative developer to face off to the traders and quantitative researchers to develop enhanced systems and data capabilities for their fixed inc ...

Member of Technical Staff,Compute Orchestration & Scheduling MAI Superintelligence Team

**Overview** Microsoft AI is looking for a Member of Technical Staff, Compute Orchestration & Scheduling to help build the next wave of capabilities of our personalized AI assistant, Copilot. Weu2019re looking for someone who will bring an abundance of positive energy, empathy, and kindness to the team e ...

Member of Technical Staff,Compute Orchestration & Scheduling MAI Superintelligence Team

**Overview** Microsoft AI is looking for a Member of Technical Staff, Compute Orchestration & Scheduling to help build the next wave of capabilities of our personalized AI assistant, Copilot. Weu2019re looking for someone who will bring an abundance of positive energy, empathy, and kindness to the team e ...

Senior Sales Engineer, Commercial

From Fivetran’s founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses, canonical and ready to query, with no engineering or maintenance required. We’re proud that more organizations continue ...

Senior Sales Engineer, Commercial

From Fivetran’s founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses, canonical and ready to query, with no engineering or maintenance required. We’re proud that more organizations continue ...

Data Engineering Tech Lead

Salary: up to £200k base + bonusSummaryFantastic opportunity for an experienced engineer to lead a brand-new data engineering team at this tech-savvy algorithmic trading firm. A very hands-on tech lead, you’ll be building a new system for processing and managing daily data ...

Data Engineering Tech Lead

Salary: up to £200k base + bonusSummaryFantastic opportunity for an experienced engineer to lead a brand-new data engineering team at this tech-savvy algorithmic trading firm. A very hands-on tech lead, you’ll be building a new system for processing and managing daily data ...

Senior Backend Platform Engineer – EdTech (Learning Systems & Integrations)

# Senior Backend Platform Engineer – EdTech (Learning Systems & Integrations),February 15, 2026### Job Description**Location:** London, UK **Work Model:** On-site **Role Type:** Full-TimeWe are looking for a **Senior Backend Platform Engineer** with strong experience in scalable backend systems and API archite ...

Quantitative Trading & Research Rates Quantitative Developer Vice President

Join a collaborative, fast-paced team where your code powers systematic trading in global Rates markets. You will help transform research into robust, production-grade strategies and platforms. Work closely with quantitative researchers and traders to design, build and evolve execution capabilities. Grow y ...

AI Engineer

Join to apply for the AI Engineer role at Millennium . We are working on different areas where AI/ML can help portfolio managers, researchers, risk managers, and other functions. Some examples are: enabling traders/researchers to consume vast amounts of research and literature by org ...

Quantitative Trading & Research Rates Quantitative Developer Vice President

Join a collaborative, fast-paced team where your code powers systematic trading in global Rates markets. You will help transform research into robust, production-grade strategies and platforms. Work closely with quantitative researchers and traders to design, build and evolve execution capabilities. Grow your ...

Quantitative Trading & Research Rates Quantitative Developer Vice President

Join a collaborative, fast-paced team where your code powers systematic trading in global Rates markets. You will help transform research into robust, production-grade strategies and platforms. Work closely with quantitative researchers and traders to design, build and evolve execution capabilities. Grow your ...

Data Platform SRE

Assume a critical role in defining the future of a globally recognized firm and have a direct and significant effect in a realm tailored for top achievers in site reliability.As a Lead Site Reliability Engineer at JPMorgan Chase within the CT/COGT, you hold a leadership role in your team, demonstrate s ...

Data Platform SRE

Assume a critical role in defining the future of a globally recognized firm and have a direct and significant effect in a realm tailored for top achievers in site reliability.As a Lead Site Reliability Engineer at JPMorgan Chase within the CT/COGT, you hold a leadership role in your team, demonstrate s ...

AI Engineer, Google Cloud Consulting

Minimum qualifications Bachelor's degree in Computer Science or equivalent practical experience. 3 years of experience building and deploying machine learning solutions (including both Classical ML/Deep Learning and Generative AI) and working directly with technical customers or s ...

VP, Senior Full Stack Engineer (Java & Angular)

**About this role** Are you interested in building innovative technology that shapes the financial markets? Do you like working at the speed of a startup, and tackling some of the world’s most interesting challenges? Do you want to work with, and learn from, hands-on leaders in technology and finance?<b ...

Senior Java API Engineer – Pricing Platform (Hybrid)

A leading retail technology firm in Greater London is seeking a skilled Java Developer to join their Price Service team. The role involves designing robust, scalable APIs used across all of Tesco’s channels, serving millions of shoppers weekly. Key responsibilities include implementing systems, translating produ ...

Senior Lead Java Engineer — Global Liquidity Tech

A global financial institution is seeking agile technologists to join their Global Liquidity Technology team in London. Candidates should possess excellent knowledge of core Java (17+) and practice TDD and BDD engineering techniques. The role involves delivering high-quality solutions while working closely with ...

Senior Java Backend Engineer — Fintech, Scale & Impact

A leading fintech company is seeking a Mid/Senior Backend Engineer in Mexico, Estado de México. The ideal candidate will have a profound fluency in Java and over 6 years of backend development experience. Responsibilities include developing microservices, enhancing risk management systems, and focusing on greenf ...

Lead Site Reliability Engineer SRE Java FinTech

Lead Site Reliability Engineer SRE Java - FinTech Lead Site Reliability Engineer SRE Java - FinTech Get AI-powered advice on this job and more exclusive features. This range is provided by Client Server. Your actual pay will be based on your skills and experience — talk with your recr ...

Senior Java Engineer – Lead Loyalty Platform Features

A leading technology firm is seeking a Senior Java Engineer in London to lead the development of core product features for a travel app. Candidates should have over 5 years of experience and strong programming and API design skills. The role requires a proactive approach to problem-solving and excellent communic ...

Java Cloud Engineer — SC Cleared, AWS & Microservices

Join a forward-thinking technology consultancy that values autonomy and collaboration. As a Java Cloud Developer, you'll leverage your expertise in Java and AWS to deliver high-quality code and streamline software delivery processes. You'll be responsible for all aspects of your code, from development to product ...

Staff Backend Engineer | Java, Microservices & Cloud Native

A prominent technology company is seeking a Staff Engineer (Backend - Java) in London. You will design scalable backend systems and lead initiatives across teams. The ideal candidate has extensive experience with Java, Spring Boot, and distributed systems. The position offers a competitive salary, pension, healt ...

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 Backend Engineer | Enterprise Platform Leader

A global financial services organisation is seeking a Senior Java Engineer to contribute to a vital enterprise platform. This hands-on role involves not only development but also shaping technical standards and collaborating with senior engineers to enhance platform quality. Ideal candidates should have strong e ...

Senior Lead Backend Engineer — Java & Kotlin (Fintech)

A leading financial services firm in Greater London is seeking a Senior Lead Software Engineer. The successful candidate will drive innovative product solutions while prioritizing collaboration and diversity in a tech-driven environment. Responsibilities include developing scalable and secure code, problem-solvi ...

Senior Backend Engineer Java Microservices | Hybrid/Remote

A leading fintech company is seeking a passionate backend developer to drive innovation in their microservices architecture. With a strong focus on Java and Spring frameworks, you will work within a self-managed team in a hybrid or remote setting. The role emphasizes quality, collaboration, and career developmen ...

Senior Java Engineer Low Latency Trading Systems

A leading global financial services firm based in Greater London is seeking a Senior Java Developer to deliver low-latency trading system components. The ideal candidate will have expertise in Java and experience with distributed systems, cloud environments like AWS, and trading flows. This role emphasizes colla ...

Contract Senior Java/Kotlin Engineer — TDD & Mentorship

A leading tech company in London is seeking a Contract Senior Java / Kotlin Engineer to develop JVM applications using TDD and Pair Programming. Candidates should possess over 5 years of experience with Java or Kotlin and a strong foundation in agile development practices. This position entails mentoring team me ...

Senior Backend Java Engineer Loyalty APIs (London)

A leading tech company in London is seeking a Senior Back-End Java Engineer to design and develop key product features for a widely-used app. You will take charge of API design and core services, ensuring quality delivery and mentoring junior engineers. The ideal candidate will have over 5 years of experience, s ...

Senior Java Engineer Remote, Flexible Hours, Growth

A leading digital consultancy in the UK seeks a talented software engineer to develop RESTful Java APIs and collaborate with cross-functional teams to deliver outstanding solutions. You will play a key role in the success of various client projects, mentoring your team and advocating for best engineering practic ...

Senior Java Engineer Onsite London (6mo Contract)

A leading technology company is looking for experienced Java developers to join their team in London. You'll be involved in all delivery areas, mentoring a team and driving innovation. The role requires expertise in Java and cloud-based technologies, with a focus on collaboration and continuous improvement. This ...

Lead Backend Platform Engineer Java & Spring Boot

A global leader in financial services is seeking a Senior Lead Software Engineer to drive backend development efforts using Java and Spring Boot. The ideal candidate will design scalable, reliable libraries and frameworks tailored to product engineering needs, while championing best practices and coaching team m ...

Global Lead Java Engineer Markets CRM Platform

A leading financial services firm is seeking a VP Engineer for its Markets CRM platform. In this role, you will lead a global team to design and deliver scalable technology solutions while driving technical excellence and fostering a collaborative culture. You will be responsible for both front-end and back-end ...

Senior Java Engineer, Low Latency Payments Systems

A dynamic technology consulting firm based in the UK is on the lookout for an experienced Java Developer. The role requires expertise in Core Java and SpringBoot, focusing on developing high-throughput systems in the payments processing domain. Responsibilities include designing and optimizing backend systems, b ...

Senior Java Engineer Hybrid, Build Scalable Microservices

A leading UK retailer is seeking a Senior Java Engineer to develop high-performance services using Java and modern frameworks. In this role, you’ll enhance customer experiences through scalable technology and support engineering practices within an inclusive, agile environment. You will have input into the produ ...

Senior Backend Engineer: Java, Kafka & Microservices Leader

A global technology company is seeking a Senior Software Engineer II to join their team. This role involves leading the design and development of scalable services using Java and Spring Boot while maintaining a focus on microservices architecture. Candidates should have significant experience with distributed sy ...

Hybrid Java Engineer: Spring, Docker & Cloud DevOps

A leading global technology consultancy is seeking a technical expert for a hybrid role focused on DevOps methodologies and software engineering. The ideal candidate will have extensive Java experience, familiarity with Spring frameworks, and a strong commitment to quality code delivery. You will help deliver pr ...

Senior Java Engineer Cloud Microservices (Hybrid London)

A leading consultancy based in the UK seeks an experienced Senior Java Developer for a 12-month contract to work on critical cloud-native platforms. This hybrid role involves designing high-performance Java microservices and event-driven architectures utilizing Kafka and AWS. Ideal candidates should have substan ...

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 ...

Real Time Payments Engineer (Java, Spring, Kafka)

A leading technology firm in Greater London is looking for an experienced Software Engineer to develop innovative solutions in the real-time payment processing sector. The ideal candidate will have expertise in Java, experience with reactive programming using the Spring framework, and be familiar with Agile meth ...

🚀 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

    Software Engineer Python Java Data Jobs in London Job Search Guide, Trends and Insights