• London Jobs Expertini profile avatar

    • Lead Software Engineer Python Java 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
    Explore Leading Employers
    High-Paying Careers
    Expertini Penguin Mascot Resume Score™
    Resume Score™ Instantly
    Upload Your CV
    Quick 30-second process

    Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

    1. Expertini
    2. United Kingdom
    3. London
    4. Jobs
    5. Lead Software Engineer Python Java Jobs

    6. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Lead Software Engineer

    About WeBuild-AI:WeBuild-AI are AI natives delivering 10x value for enterprise organisations. We combine highly skilled experts with our AI Launchpad, industry-aligned language models, and agents to transform ente ...

    Lead Software Engineer

    Senior Full-Stack Engineer – Trading Platform (TypeScript / Node.js / React)Location: Waterloo, London (Hybrid)OverviewOur client, a large enterprise, is seeking a Senior Full-Stack Engineer to join an established trading platform programme. This production-cri ...

    Lead Software Engineer

    Job Title: Lead Software EngineerLocation: LondonExperience: 8 years onwards About the Job you are considering:We are seeking experienced software Engineer with strong expertise in Banking and Finance domain who will overseeing the planning, execution, a ...

    Lead Software Engineer

    About the roleAs a Lead Software Engineer, you will spearhead our backend and edge/IoT engineering for high-stakes Defence projects, implementing patterns and practices that are both scalable and future-proof. You will bridge the gap between proof-of-concept and robust systems, raising th ...

    Lead Software Engineer

    DescriptionHybrid: 2 days per week in our Tower Bridge office (Wednesdays & Thursdays)money.co.uk exists to help consumers make more informed financial decisions. Our free, online comparison service allows consum ...

    Staff Backend Engineer (C++/Java/Go/Python/Typescript)

    Job Description If you are interested in applying for this job, please make sure you meet the following requirements as listed below.Fastest Growing Start-up in the UK | Defence We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group bui ...

    Senior Python/Java Cloud Engineer — AI, AWS & RAG

    A global financial services leader in the UK is seeking a Senior Python Engineer to develop high-quality production code for cloud-based systems. This role involves optimizing AI-driven workflows and contributing to an agile team. The ideal candidate possesses advanced proficiency in Python and hands-on experien ...

    Senior Data Platform Engineer Java/Python, Risk Tech

    A leading financial services firm is looking for a Senior Lead Software Engineer to join their Data Platform & Strategy team in Greater London. In this role, you will design and enhance advanced data engineering solutions that support business objectives. You will collaborate with agile teams and drive innovatio ...

    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 ...

    Backend Engineer (Java/Python) for Critical Systems — London

    ALTEN LTD - UK is hiring a Backend Software Engineer in London responsible for developing high-reliability software platforms. You'll focus on creating core operational software, working with data flows, and improving automation efficiency. Candidates should have strong Java and Python skills, a degree in Engine ...

    Senior Python/Java ML Engineer Life Sciences, Remote

    A leading consulting firm is seeking a Senior Software Engineer with extensive experience in Python and Java to join their team for a high-stakes project in the Life Sciences industry. Ideal candidates will have a PhD or MSc in Computer Science and a proven track record of developing complex applications. This p ...

    Backend Engineer – Java/Spring Boot & Python (Hybrid London)

    Methods Business and Digital Technology Ltd is seeking a Back-end Developer specializing in Java Spring Boot and Python to join their private sector team in London. This hybrid role requires 3 days on-site each week. The successful candidate will lead the rebuild of core architecture, optimize technical connecto ...

    Senior Full Stack Engineer (Java/Python) React & Cloud

    Develop is looking for a Senior Full Stack Engineer based in London to join their team in building scalable systems. This role focuses on Java and Python for backend services and requires strong React skills for frontend development. Candidates must have recent experience in these technologies and be comfortable ...

    Senior Java Lead Engineer Scalable Financial Tech

    A leading global financial services firm is seeking a Lead Software Engineer to join its Equities Technology team in London. You will execute creative software solutions, develop secure high-quality production code, and lead practices in software engineering. Ideal candidates should have over 12 years of experie ...

    Senior Lead Software Engineer Java Global Liquidity Portfolio Management Platform Engineer

    Our Asset and Wealth Management division is driven by innovators like you who are driven to create technology solutions that make us work more efficiently and help our businesses grow. It's our mission to efficiently take care of our clients' wealth, helping them get, and remain properly invested. Across 2 ...

    Senior Lead Software Engineer Java Global Liquidity Portfolio Management Platform Engineer

    Our Asset and Wealth Management division is driven by innovators like you who are driven to create technology solutions that make us work more efficiently and help our businesses grow. It’s our mission to efficiently take care of our clients’ wealth, helping them get, and remain properly invested. Across 27 c ...

    Senior Lead Software Engineer Java Global Liquidity Portfolio Management Platform Engineer

    Our Asset and Wealth Management division is driven by innovators like you who are driven to create technology solutions that make us work more efficiently and help our businesses grow. It’s our mission to efficiently take care of our clients’ wealth, helping them get, and remain properly invested. Across 27 c ...

    Lead Python Engineer, Commodities Platform

    A global financial institution in Greater London is seeking a Python Lead Software Engineer to enhance and deliver market-leading technology products for Commodities trading. This role involves executing creative software solutions, developing secure high-quality code, and improving operational stability. Candid ...

    Lead Python Engineer – AI & Data

    We’re working with a leading consulting firm on a long‑term engagement with a major financial services client. They are looking for a Lead Python Engineer to set the engineering bar across several Python services while remaining highly hands‑on. The opportunity You will: Lead th ...

    Senior / Lead Python Engineer – Greenfield

    Job Description The Role Following the appointment of a highly impressive CTO and Head of Engineering this scale up is looking for a number of senior python engineers to join the team and deliver on a rebuild of this businesses new platform. This is a hands on role where you ...

    Senior AI Native Engineer — Frontline Client Delivery

    Indicium Tech is seeking a Forward Deployed Software Engineer to join their team in Greater London. You will lead engagements that revolutionize how enterprises build software, embedding AI native development at every stage. The ideal candidate has at least 5 years of experience in software engineering, a solid ...

    VP Lead Software Engineer, Margin Tech — Hybrid

    Citigroup Inc. is hiring a Lead Software Engineer to join their global technology team in London. You'll be working on complex problems with a focus on delivering robust software solutions. Candidates should have significant software development experience and proficiency in languages such as Java and Python. Th ...

    Senior Java Software Developer

    About ITRS Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry‑leading solutions. Our mission is to make society's critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation. With our p ...

    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 Software Developer

    Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our mission is to make society’s critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation.With our prestigious customer b ...

    Software Developer Java Experience

    Job Description This is an exciting opportunity within technology consultancy, offering fast‑track career development and hands‑on coding across the entire software development life cycle. Your role will involve supporting and driving the team to success, contributing to design, development, and ...

    Java Developer Scientific Software

    Java Developer – Scientific Software (PR/ ) Surbiton, England Salary: GBP50000 - GBP60000 per annum + benefits Java Developer / Software Engineer (Java Mathematics) WFH / Surbiton to £50k Are you a “mathematically minded” Java Developer looking for an opportunity like to progress ...

    Software Developer Java Experience

    Are you ready to join the forefront of technology innovation with Netcompany? As one of the fastest growing technology companies, we are disrupting the marketplace and revolutionizing the way businesses operate. Our vision is to be the leading digital challenger in Europe whilst evolving the next generatio ...

    Senior Java Software Developer

    About ITRS Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our mission is to make society’s critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation. Wi ...

    Java Middleware Software Developer

    Job Description Java Middleware Software DeveloperSomeone who has excellent Java skills, Spring MVC, Apache CXF, Dozer (a fast and flexible framework for mapping back and forth between Java Beans) & XML: A minimum of 5 years’ work experience in Software Development ...

    Senior Java Software Developer

    About ITRS Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our mission is to make society’s critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation. Wi ...

    Python Software Developer Backend

    About us At Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate – moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale‑up – thin ...

    Senior Software Developer (Python)

    Join to apply for the Senior Software Developer (Python) role at Olive Jar Digital FTC or Permanent, UK-wide, Remote About the Role Olive Jar Digital is seeking a Senior Software Developer to help build, refine, and enhance high‑fidelity AI prototypes and supportin ...

    Python Software Developer Backend

    About us At Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate – moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale‑up – thin ...

    Software Developer C++ & Python

    Job Title: Software Developer - C++ & PythonJob DescriptionWe are looking for someone to join our software engineering team to be responsible for upgrading and enhancing some internal infrastructure, with a focus on security and maintainability. This role will ...

    Software Developer C++ & Python

    Job Title: Software Developer - C++ & PythonJob DescriptionWe are looking for someone to join our software engineering team to be responsible for upgrading and enhancing some internal infrastructure, with a focus on security and maintainability. This role will ...

    Principal AI Governance Platform Architect

    J.P. MORGAN is looking for a Principal Software Engineer in Greater London to lead AI Governance Engineering efforts. The role involves designing and building governance platforms, developing reusable services, and ensuring compliance across AI/ML delivery lifecycles. Candidates should have strong software engin ...

    Senior Backend Engineer for Scalable Data & AI Systems

    A data-driven software company in Greater London is seeking a Backend Software Engineer to lead the architecture and development of scalable backend services. The role involves building robust APIs, collaborating with other engineers, and optimizing performance. Candidates should have 6+ years of experience in b ...

    Java Engineer

    About Us: Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever‑changing technical landscape. We partner closely with our clients, embedding our consultants ...

    Java Engineer

    About Us Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to help our clients solve real‑world problems and adapt to an ever‑changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses to provid ...

    Java Engineer

    Job Description We’re looking for Java developers at all levels, ranging from Junior (2+ years’ experience) to Principal engineers and Architects, to join us as we kick off new Java projects with tier-1 investment banks. You’ll work on mission-critical systems bringing the best modern softw ...

    Java Engineer

    Get AI-powered advice on this job and more exclusive features. Java Engineer – Java Developer – PostGres – Kubernetes – Kafka – TDD – 6‑Month Contract – Hybrid (2 days on site, London) – Day Rate: Up to £700 (Inside IR35) Join a high-performing engineering team working on large-scale, hig ...

    Java Engineer

    Overview Our client is seeking a Java Engineer to join their Data Distribution team , responsible for building and evolving an enterprise‑grade investment data platform supporting Research, Portfolio Management, Trading, and Analytics . This role focuses on Java-bas ...

    Java Engineer

    Java Engineer Salary to £45 k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at lea ...

    Java Engineer

    About Us: Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding ...

    Java Engineer

    About Us: Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding ...

    Lead Software Engineer, Margin Tech Global FinTech Hybrid

    Citibank (Switzerland) AG in Greater London seeks a Lead Software Engineer to shape the future of finance technology. The ideal candidate will work within a dynamic team, develop robust software solutions, and contribute to the automation of processes. You should possess hands-on experience in Java, Python, and ...

    Python Engineer

    Join to apply for the Python Engineer role at LinkedTrade Join to apply for the Python Engineer role at LinkedTrade Are you a passionate Python developer looking for your next challenge? LinkedTrade Technologies Ltd, a leadi ...

    Python Engineer

    Role Highlights: Position: Python Engineer Location: Remote within the UK Employment Type: Permanent Compensation: Competitive market salary plus equity options Overview: An innovative EdTech start-up is seeking a skilled P ...

    Python Engineer

    We have a fantastic new opportunity to join our team at Smartodds as a Python Engineer. Based in North London, Smartodds provides in-depth research and analysis on sporting events around the world, supported by world-class, bespoke software platforms. We are proud of our collaborative and dynamic c ...

    🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

    Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

    To-Do Planner

    Organize your job search and personal tasks. All data is confidential.

    Open Planner →

    Wellbeing Center

    Access your confidential wellness report and resources to manage job search stress.

    Check Wellbeing →

    Skill Coach

    Plan your skill development with O*NET support to stay competitive in your field.

    Start Coaching →

    Outfit Helper

    Get AI-powered suggestions on what to wear for your next interview.

    Find Outfit →

    Income Tax Calculator

    Plan your finances with our calculator, updated for 2025 tax regulations.

    Calculate Tax →

    Salary Benchmark

    Get accurate, AI-supported salary trends to know your worth and negotiate better.

    Check Salaries →

    Interview Practice

    Practice for any interview with AI-enabled Q&A sessions. All data is private.

    Start Practicing →

    Interview Predictor

    Use our AI-supported tool to predict potential interview questions based on your resume.

    Predict Questions →

    Interview Practice Timer

    Use our mock interview trainer to perfect your answers under timed conditions.

    Start Timer →

    Behavioral Mastery

    Ace tricky behavioral interviews with our AI-powered practice module.

    Master Answers →

    Question Journal

    Confidentially record interview questions you were asked for future reference.

    Open Journal →

    Interview Ace

    A comprehensive tool to help you master every aspect of your interviews.

    Become an Ace →

    Q&A Logs

    Confidentially track your answers to common questions and refine them over time.

    View Logs →

    Application Planner

    Schedule and organize your job applications in one confidential planner.

    Open Planner →

    Cover Letter Tool

    Create perfect, tailored cover letters for each application with AI support.

    Generate Letter →

    Resume Score

    Get instant feedback on your resume with our NLP-supported analysis tool.

    Check My Score →

    ATS Score

    Check your resume's compatibility with Applicant Tracking Systems (ATS).

    Check ATS Score →

    Application Analyzer

    Use AI to analyze job descriptions and optimize your application materials.

    Analyze Application →

    Career Visualizer

    Confidentially plan and visualize your long-term career path and goals.

    Visualize My Career →

    Offer Genius

    Get intelligent insights and strategies to confidently negotiate job offers.

    Negotiate Offers →

    JobFlow

    Track your entire job search progress from application to offer with this intelligent tool.

    Track My Flow →

    JobSense

    Our intelligent matching engine that provides smart job recommendations.

    Get Smart Matches →

    Networking Toolkit

    Tools to build and manage your professional connections. All data is confidential.

    Build Network →

    Professional CV

    A classic, O*NET supported template for corporate and professional roles.

    Use This Template →

    Executive CV

    A premium, O*NET supported template designed for senior and C-level positions.

    Use This Template →

    Modern CV

    A fresh, stylish, O*NET supported template perfect for tech and modern industries.

    Use This Template →

    Creative CV

    A visually distinct, O*NET supported template for design and artistic roles.

    Use This Template →

    Minimalist CV

    A clean, simple, O*NET supported template that focuses purely on content.

    Use This Template →

    Europass CV

    The standard European Union recommended format for wide compatibility.

    Use This Template →

    Student CV

    An institution-recommended template perfect for internships and first jobs.

    Use This Template →

    Graduate CV

    An institution-recommended template for recent graduates entering the workforce.

    Use This Template →

    Academic CV

    The researcher-recommended format for roles in academia and research.

    Use This Template →

    Developer/IT CV

    A tech-savvy recommended template to highlight your technical skills.

    Use This Template →

    Skilled Worker CV

    A trades-recommended template to showcase hands-on skills and experience.

    Use This Template →

    Monochrome CV

    A sleek, black-and-white, O*NET supported template for a professional look.

    Use This Template →

    Art CV

    An artist-recommended template that allows your creativity to shine.

    Use This Template →

    Harvard CV

    A researcher-recommended template based on the classic Harvard format.

    Use This Template →

    Volunteer Research

    Help us improve our platform by joining our community research program.

    Join Research →

    Review Us

    Share your experience with our tools to help other job seekers.

    Share Experience →

    Register

    Create your free account to save jobs, build your profile, and track applications.

    Create Account →

    Login

    Access your dashboard, manage applications, and continue your job search.

    Access Your Account →

    Profile Builder

    Create a comprehensive professional profile that attracts recruiters and showcases your skills.

    Build Your Profile →

    View Profile

    See your public profile exactly as employers will see it. Make sure it's perfect.

    Preview Profile →

    Bookmarked Jobs

    Keep track of all your saved job opportunities in one organized place.

    View Saved Jobs →

    Your Reviews

    View and manage all the company reviews you've submitted.

    See Your Reviews →

    Following

    Manage the list of companies you follow to stay updated on their new openings.

    Manage Following →

    Find Companies

    Discover and research top employers in your country and industry.

    Discover Employers →

    Standalone CV Builder

    Use our O*NET supported CV builder to create a professional resume from scratch.

    Build Your CV →

    PDF to DOC (Beta)

    Convert your PDF resumes or documents into editable Word (DOC) format.

    Convert PDF →

    DOC to PDF (Beta)

    Create universally compatible PDF documents from your Word (DOC) files.

    Create PDF →

    General FAQ

    Find answers to common questions about our job site and platform.

    Read FAQ →

    Job Seekers FAQ

    Get help and find answers to questions specifically for job seekers.

    Get Help →

    Job Matching

    Learn about the technology and algorithms behind how we match you to jobs.

    Learn How →

    Personalized Matching

    Discover how we use your profile and activity to provide customized job suggestions.

    Learn More →

    Quick Apply

    Understand our fast application process and how to make the most of it.

    Learn More →

    Alert Frequency

    Learn how to manage your job alert settings so you get the updates you want.

    Manage Settings →

    Job Alerts Guide

    A complete guide to understanding how job alerts work and how to use them effectively.

    Read Guide →

    Resume Matching

    Learn how our system matches your resume to job requirements.

    Learn More →

    Ethical Branding

    Read our guide to building a professional and ethical personal brand.

    Read Guide →

    Candidate Visibility

    Learn how to increase your visibility to recruiters on our platform.

    Increase Visibility →

    Verified Badge

    Find out how you can get a verified badge to build trust with employers.

    Get Verified →

    AI ATS Technology

    Learn about the advanced AI and ATS technology that powers our platform.

    Learn More →

    ATS Ranking

    Understand how Applicant Tracking Systems rank you as an applicant.

    Learn More →

    Semantic Matching

    Learn how our AI-powered semantic matching goes beyond keywords.

    Learn More →

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

    Go to Your Dashboard →

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