• London Jobs Expertini profile avatar

    • 156,430+ Lead Java Application Developer Java Web Tech 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
    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 Java Application Developer Java Web Tech Jobs

    6. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Senior C++ Developer & VP, Low Latency Trading

    LGBT Great is seeking a Senior C++ Developer to join their Vice President in the Latency Sensitive Electronic Trading (LSET) department. This role involves developing C/C++ components for low-latency trading services alongside a high-performing team in a hybrid work environment. Candidates must have proven C/C++ ...

    Part Time Software Developer Community Current (Remote)

    Repowering London is looking for an experienced Software Developer to join the Community current development team on the Elysia solar billing operations platform. The role involves collaboration with another remote developer, focusing on high-quality and security-conscious coding. The position is a fixed term fo ...

    Entry Level Software Developer — Remote & Flexible Hours

    Konrad is seeking an entry level Software Developer to join their dynamic team in Greater London. As part of this role, you will assist in developing consumer and enterprise applications, working collaboratively to write code that is maintainable and testable. The ideal candidate should have a strong u ...

    Software Developer Equity Market Making Trading Platform

    Marex Group plc (NASDAQ: MRX) is a global financial services platform. Job Reference: VN2582 Overview / Department Description We are seeking a senior Software Engineer to provide technical leadership, architectural authority, and hands‑on delivery across our Equity Market ...

    Senior GLOSS Developer | Post Trade & SQL Expert

    N Consulting Limited in London is seeking a Senior GLOSS Developer with at least 6 years of experience in GLOSS development and expertise in post-trade processing. This role involves developing GLOSS-based applications and optimizing complex SQL queries. The candidate should possess strong troubleshoot ...

    Senior Fintech Developer London in London CoinRoutes

    Working on new core systems and protocols in C, Rust, and improving and re-writing existing core systems and protocols. We have a large set of applications written in C, Rust, and Python, and are looking to optimize our infrastructure for increasing market volumes and lower latencies. CoinRo ...

    Senior Market Risk Developer – Historical Time Series

    Senior Market Risk Developer – Historical Timeseries Position / Group DescriptionThe Risk Technology group builds and supports a global risk platform enabling the Risk Management group to oversee all areas of risk across the Firm. The risk platform provides cap ...

    Python Quant Developer | High Frequency Trading Team

    Python Quant Developer | High-Frequency Trading Team We are working with a leading traditional and digital asset trading firm whose mission is to build a global financial institution designed for market integrity and efficiency. They apply a disciplined, first-principles approach to everything th ...

    Quant Developer (C++/Rust) – Fast Paced HFT

    A leading trading firm in London is seeking an early-career Quantitative Developer eager to broaden their skill set beyond typical roles. The position involves developing quantitative models in C++ and Rust, collaborating with trading teams, and engaging in continuous learning in a dynamic environment. Excellent ...

    Senior C# Developer — FX Trading & Orchestrade Expert

    A global consulting group seeks a Senior C# Developer in Greater London. The ideal candidate will have extensive C# experience, deep knowledge of FX products, and expertise with the Orchestrade platform. You will design and develop solutions for trading and risk management, working with a high-performance financ ...

    Senior .NET Developer FinTech Back Office Solutions

    Kynetix Technology Ltd is looking for a Full-stack Developer to join their agile team in Greater London. You will work collaboratively to design and implement software solutions for high-profile financial clients. The ideal candidate will possess a strong track record in full-stack development, excellent problem ...

    D365 & Power Platform Developer Hybrid, Impactful CRM

    FRG Technology Consulting is seeking a Microsoft D365 and Power Platform Developer to join their innovative team in Greater London. In this permanent role, you will leverage your proficiency in MS Dynamics CRM and Power Platform to develop impactful solutions while working in a stimulating hybrid environment. ...

    Hybrid Salesforce Admin/Developer – Agentforce Chatbot Expert

    Focus on SAP is seeking a Salesforce Administrator/Developer for a contract role based in London, UK. The position involves configuring Salesforce Service Cloud environments and optimizing Agentforce chatbot capabilities. Applicants should have 3+ years experience, strong Salesforce expertise, and exce ...

    Dynamics 365 CRM Developer – Public Sector & Compliance

    Scrumconnect Consulting in Greater London is seeking an experienced Dynamics 365 Developer to join a high-performing team. In this role, you will design, develop, and maintain Microsoft D365 CRM solutions while ensuring compliance with strict government and accessibility standards. The successful candidate will ...

    Developer Experience Engineer Bazel & Monorepo, Hybrid UK

    A leading technology company in the UK is seeking a Software Engineer to join their Developer Experience team. The role involves enhancing developer workflows, optimizing Bazel builds, and managing CI/CD pipelines. Ideal candidates will have over 5 years of experience in Infrastructure Engineering, proficiency i ...

    Python Developer: Secure Cloud & API (DV Eligible)

    CGI is seeking experienced Python Developers in Greater London to design, develop, and maintain scalable applications. The successful candidates will work with cross-functional teams, utilizing their skills in Python and AWS. Responsibilities include building APIs, managing large datasets, and collaborating in a ...

    Python Quant Developer — Cross Asset Risk & PnL

    A leading global investment bank in London is seeking a mid-senior level Python Developer to join their cross-asset strategy group. This role involves working hands-on with trading teams and developing Python-based tools to enhance market risk and PnL analysis. Successful candidates are passionate about programm ...

    Trading Tools Developer — Hybrid/Remote, Global Impact

    SmartestEnergy is looking for skilled Trading Developers to create high-performance trading tools crucial for multiple markets. You will play a key role in developing secure solutions that enhance front-office trading activities. With a commitment to work-life balance, the role offers hybrid working: t ...

    Real Time Quant Developer | Python Engineer (Trading)

    Capital Markets Recruitment is seeking a skilled Quantitative Developer/Python Engineer to join a leading trading firm in Greater London. This role offers the chance to develop and optimize real-time trading platforms and collaborate closely with traders in a hybrid work environment. The ideal candidat ...

    Junior Buyer & Product Developer – Beauty & Home (Hybrid)

    TRP RECRUITMENT is seeking a Junior Buyer/Product Developer to join a dynamic team in the beauty and homeware sector. This hybrid role demands a minimum of 3 days in the office, focusing on developing innovative products and supporting market trends. The ideal candidate will possess experience in buyin ...

    Interim Power Platform Developer (12 month FTC)

    The Value of Active Minds About JupiterJupiter is one of the UK’s leading investment management companies with just under 500 employees and £54 billion worth of assets under management (as at 31st December&n ...

    Frontend Developer (Vue.js or React or Angular)

    TransPerfect Is More Than Just a Job…Our greatest asset is our people, and nothing is more important to us than ensuring that everyone knows that. Each of our 100+ offices has its own individual identity, and each also has its own unique rewards.We’re hiring aFrontend Engineerto join ...

    Software Developer Enterprise Technology [Node JS / Typescript]

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

    Senior C# Developer C#.Net Sports Trading

    Senior C# Developer / Backend Software Engineer (C# .Net) London onsite to £150kAre you an experienced backend focussed C# Developer?You could be progressing your career in a senior, hands-on role at a global Sports Trading business, earning substantial bonuses.As a Senior C# Devel ...

    Python Developer (Energy) London £700 850/day

    Python Developer (Energy) - London - £700-850/day(Python, React, Azure, LLM)We're working with an industry leading energy company that are looking for an experienced full stack Python Developer to join them as part of an internal LLM initiative for an initial 6-month contract.This p ...

    : Business Developer FlexTeam Pods (Salesforce & CRM Services)

    About Kompetenza - Sponsorship Available - Option to move to move to Dubai if outside of UAE Kompetenza part of the MaxAccelerate Technology Group is a Salesforce partner specializing in CRM solutions, FlexTeam Pods, and digital transformation services ...

    Dynamics 365 CRM Omnichannel Technical Consultant / Developer

    Job Description Microsoft Dynamics 365 CRM Technical Consultant (omni channel / contact centre / Customer service) | Outside IR35 | £450-475 per day | Fully Remote | 6 Months initial contractA large new Microsoft Dynamics 365 CRM project at a Microsoft Gold Partner requires a D3 ...

    HFT C++ Developer (Fully Remote from anywhere)

    SummaryMy client is a one-of-a-kind quantitative trading company operating on the cutting edge of technology. The company has risen to prominence in the HFT space in recent years, by leveraging not only the expertise of their talented people, but also state-of-the-art research infrastructure. Tr ...

    Python Quant Developer – Risk/Pricing Platform – London

    Salary: paying up to £250k + bonusSummaryOne of the world’s largest hedge funds using innovative and cutting-edge technology, where data is fundamental to the investment process. Central Risk is a key initiative for the firm, and this Quant Developer role offers the opportunity ...

    Senior Power Platform Developer Secure, Hybrid, Impactful

    Kerv is looking for a Senior Power Platform Developer who can thrive in a hybrid work environment. This role requires a deep expertise in developing Canvas Apps, coupled with strong skills in Dataverse and Power Automate. The successful candidate will be responsible for building proof of concept prototypes an ...

    Remote Senior Salesforce Developer Service & Sales Cloud

    Salt Digital Recruitment is looking for a Senior Salesforce Developer to work fully remote from Hungary. This role involves designing and developing high-quality solutions using Salesforce Service Cloud and Sales Cloud for a major telco. Candidates should have solid experience with Lightning components, integ ...

    Quantitative Developer — Build Market Analytics Models (Hybrid)

    A leading financial software firm in the City of London is seeking a Quantitative Developer to design and build algorithms for market surveillance. The role requires proficiency in C#, C++, or Python and a strong mathematical background. The ideal candidate has experience in financial services and is keen to inn ...

    SQL Server Database Developer Data Integrity & Performance

    iO Associates is seeking a Database Developer in Central London (Hybrid 2-3 days in office) to join a specialist financial data organisation. This role involves developing and optimising SQL Server-based data solutions, resolving data issues, and enhancing performance. The ideal candidate has over 3 years of SQL ...

    Microsoft Power Platform Developer (Copilot Studio Experience)

    About Crowe Crowe is a leading national firm offering audit, tax, advisory, and consulting services with global reach and local expertise. As an independent member of Crowe Global, one of the top 10 accounting networks worldwide, we have access to over 40,000 professionals across 140+ countries and ...

    C# Quant Developer Trading Desk Impact & Ownership

    Carter Wahlberg is looking for a Software Engineer to join a newly established quant hub in Greater London. This role involves building robust, dependable software that drives performance at the trading desk. The successful candidate will take ownership of features from design to rollout while collabor ...

    ML Focused Python Developer | FastAPI, Cloud & RAG

    AWTG Ltd. is seeking a skilled Python Developer based in London to join its team. The role involves developing and maintaining software applications using Python and FastAPI, implementing CI/CD pipelines, and deploying applications on cloud platforms like AWS and GCP. The ideal candidate has over 5 yea ...

    Software Developer C# Python SQL Finance Data

    Software Developer / Engineer (C# Python SQL) London / WFH to £150k+Are you a data savvy Software Developer with C# and Python coding skills?You could be joining a Hedge Fund with complex work and substantial bonus earning potential.As a Software Developer you will join a growing t ...

    Senior Mainframe Developer COBOL/DB2, DevOps & Agile

    Avensys Consulting UK is looking for an experienced professional with a strong background in Mainframe technologies and application support. The ideal candidate will have at least eight years of experience and expertise in COBOL, CICS, and various application support processes. The role requires famili ...

    Hybrid Power Apps Developer — Drive Digital Transformation

    Langley James HR & IT Recruitment is seeking a Power Apps Developer for an architectural firm in London. This hybrid role involves developing PowerApps and Power Automate solutions to enhance internal and client-facing processes. The successful candidate will play a crucial role in the firm’s digital t ...

    Front Office C# Developer Commodities/Derivatives (Hybrid)

    Huxley is seeking a Software Developer for their Commodity Derivatives team, working within the eTrading front office. This contract role pays up to £800 per day and offers hybrid working with 2-3 days per week in the London office. The ideal candidate should have solid experience with C# / .NET, along ...

    SC Cleared Node.js Developer — Remote Public Sector

    Sanderson Government & Defence is seeking an experienced SC Cleared Node.js Developer for a remote contract role in the UK. The position offers £560 per day (Inside IR35) and focuses on developing key public services, ensuring accessibility and usability. You will work with modern cloud-based platforms ...

    Core C++ Developer – NYC, London or Singapore

    Total Comp: 250-600kFantastic opportunity for a modern C++ Developer (C++17/20) to join this crypto trading and investments firm. They leverage cutting-edge technology to trade with extreme precision and speed, essential to evolve in today’s fast-changing markets.Looking to hire a ...

    Software Developer Equity Market Making Trading Platform

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

    Senior Node.js Backend Developer (100% Remote Worldwide)

    Inspired by Bitcoin's vision of financial freedom, we are committed to empowering individuals to transact and connect seamlessl ...

    Senior C# Developer C#.Net Sports Trading

    Senior C# Developer / Backend Software Engineer (C# .Net) London onsit ...

    Senior Node.js Backend Developer (100% Remote Worldwide)

    Inspired by Bitcoin's vision of financial freedom, we are committed to empowering individuals to transact and connect seamlessl ...

    Quant Developer, Core Data – London or NYC

    Exciting opportunity at one of the fastest growing financial services firms around the world. They offer prime brokerage, clearing and financing across traditional and digital assets, and are now looking to hire world-class Python software engineers to help build on their success.Responsibilities</b ...

    Low Latency Quant Developer (HFT) – Remote/EMEA

    A leading crypto trading firm is seeking a Quantitative Developer (Low Latency) to join their newly formed trading team. This full-time role involves developing trading algorithms and building systems for low-latency, high-frequency trading. Candidates should have strong programming skills, with a focus on Rust, ...

    Senior iOS Developer — Build High‑Impact Apps

    A leading global consulting firm in London seeks an experienced iOS Developer to create high-quality mobile applications for millions of users. You will design and build applications using Swift and SwiftUI, working closely with teams to deliver exceptional digital experiences. The ideal candidate has strong exp ...

    Senior Front End Developer Remote, Training & Bonus

    慨正橡扯 is seeking a talented Front End Developer to join their Software Engineering Practice in Greater London. This role involves collaborating closely with teams on projects across the full lifecycle, from design to deployment. The ideal candidate will have substantial experience in front end developme ...

    🚀 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 →

      Buffering Video...

      Lead Java Application Developer Java Web Tech Jobs in London Job Search Guide, Trends and Insights