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    • 132,411+ Java Developer Java Developer Lead Jobs in London, UK — Local Employers Hiring July 2026

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    Autonomous Platform Engineer – Real Time Data & AI

    A fast-growing fintech company in Greater London seeks a skilled developer to build scalable backend systems. You'll develop microservices, libraries, and real-time data pipelines while collaborating with teams to define data contracts. Ideal candidates are hands-on with Java, Python, or Go, and possess strong p ...

    Senior Backend Engineer – Java, Spring Boot, Docker, Kubernetes

    Zaizi is seeking a Senior Software Developer in Greater London. The ideal candidate will have extensive experience in Java and Agile methodologies, leading teams, and developing digital solutions. A focus on continuous improvement and user experience is vital. Join a supportive work culture where innov ...

    Azure .NET C# Engineer — AI, Data Flows & UI/UX

    Java Script Works is seeking a skilled .Net C# Azure Developer for a full-time position in Greater London. The ideal candidate will be proficient in Git, PowerShell, Docker, and SQL while also being familiar with technologies including TypeScript, HTML5, and Azure. The role offers a competitive salary ...

    Education Tech — Full Stack Server Developer (AWS & API)

    An educational media company is looking for a Full Stack Server Developer to join their creative team. You will build out backend systems, enhance their educational app, and manage AWS infrastructure. The ideal candidate has experience with MySQL, Java Spring, React JS, and AWS, along with excellent communicatio ...

    React/TypeScript Front Office Finance Engineer (London)

    Java Script Works is looking for a React Developer to join our team in London. You'll be responsible for React and TypeScript development in a challenging front-office banking and finance context, crucial for our client's needs. The ideal candidate will have strong experience with React, TypeScript, an ...

    Founding Full Stack Engineer: Next.js & TS Leader

    Java Script Works is seeking a skilled full-stack developer to architect, build, and deploy comprehensive applications utilizing Next.js and TypeScript. The ideal candidate will have over 3 years of experience and a proven track record in managing production-grade systems from inception to launch. The ...

    Senior Integration Architect – IBM BPM to Camunda

    A leading UK bank is seeking a Senior Integration Developer to drive engineering excellence in their digital onboarding system. This hands-on role involves leading the migration from IBM BPM to Camunda, optimizing integrations, and defining engineering goals in a high-volume banking environment. Candidates shoul ...

    Node.js Game Server Engineer (Nakama & Cloud)

    Java Script Works is looking for an experienced Game Server Developer in Greater London. Your role will involve collaborating with the team to design and implement game features, support platform-related systems using Node.js, and optimize interfaces. Ideal candidates should be proficient in various tools, inclu ...

    Senior Front End Engineer — Crypto UI/UX (React/TypeScript)

    Java Script Works is seeking a front-end software developer with over 5 years of experience. The role involves innovating and participating in building crypto services around software quality, UI/UX, security, and blockchain technology. The ideal candidate will have strong coding principles and extensive experie ...

    Senior Software Engineer, Scalable Pricing Systems

    PowerToFly is seeking a skilled software developer in London to manage key services and enhance customer experiences using technologies like Java and AWS. The ideal candidate will have over 5 years of experience, a Bachelor’s degree in Computer Science, and a proven track record in scalable system design. </p ...

    Senior Backend Java Engineer Financial Services (London)

    LinuxRecruit is looking for a Senior Backend Developer specializing in Java to join their team in London, United Kingdom. The ideal candidate should have a strong background in backend development and a passion for writing impactful code. The position offers a competitive salary between £75k and £85k per year ba ...

    Fixed Income Quant Trader: Gov Bonds & IR Swaps

    UBS in London is seeking a quantitative trader/developer to join their fixed income algorithmic trading team. The role involves developing data-driven trading systems and optimizing trading strategies for government bonds and Interest Rate Swaps. Ideal candidates will have strong analytical skills, exp ...

    Senior Java Backend Engineer – Low Latency FinTech (Remote)

    Client Server is looking for a Backend Software Engineer / Developer in London with the option to work from home, offering a salary of up to £100k. You will design and develop trading systems, utilizing advanced Java and other technologies in a microservices environment. This role requires expertise in ...

    Backend Java Engineer AWS | Fintech for Good | Hybrid

    Client Server is looking for a Software Engineer / Developer in London, offering a salary up to £90k. You will work on innovative financial tech solutions that empower communities globally. In this role, you’ll have a solid background in Java and AWS, collaborating to enhance the payment platform with ...

    Senior Java Engineer — BSS/OSS & Microservices Mentor

    A leading software company in Greater London is looking for a Senior Developer to join its Software Engineering team. The role involves technical design, development of BSS/OSS products, and mentoring junior developers. The ideal candidate will have extensive experience in Java technologies and a strong grasp of ...

    Junior Trade Desk Developer Build Smart Trading Tools

    Quant Capital is seeking a Junior Trade Desk Developer in London, United Kingdom. This full-time position offers a competitive compensation of up to £80K and is ideal for candidates with a STEM background from a top-tier university. Applicants should possess strong problem-solving abilities, proficiency in codin ...

    Software Developer

    Software DeveloperLocation: London minimum of 3 days a week (for the 1st month it is expected they will be in 5 days, dependent on project)Length: 12 monthsSalary: £48,000 per annum***CANDIDATES MUST BE UK NATIONALS AND ELIGIBLE FOR SC CLEARANCE***Role OverviewWe a ...

    DevSecOps Platform Engineer to build DevSecOps platform capabilities using CI/CD, Terraform, Bicep, GitHub Enterprise, and Azure DevOps

    Our client is seeking a DevSecOps Platform Engineer to build DevSecOps platform capabilities using CI/CD, Terraform, Bicep, GitHub Enterprise, and Azure DevOpsJoin a platform-and-adoption team focused on modernizing product delivery across enterprise delivery squads. This role supports the creat ...

    ServiceNow Developer – SC Cleared, JavaScript & API (Hybrid)

    Java Script Works is seeking a ServiceNow Developer to join our client in the public sector for a 12-month contract. The role requires expertise in ServiceNow development, JavaScript, API integration, and related technologies like Jira, Azure, ITSM, and ITOM. The position offers a competitive pay of up to £700 p ...

    Senior Front Office Developer, Crypto HFT & Trading Systems

    A boutique alternative asset manager in Greater London is looking for a Front-Office Developer specializing in high-frequency trading for cryptocurrencies. The successful candidate will design and implement trading algorithms and work closely with quantitative teams. A strong background in high-performance Java ...

    Senior Java Backend Engineer Cloud & Subscriptions

    Spotify AB is seeking an experienced backend developer to design and run scalable Java services that support our merchandising platform. The role demands 5+ years of experience with backend systems, strong cloud-native service knowledge, and a collaborative mindset to work across teams. Located in Lond ...

    Senior Software Engineer — Regulatory News Platform

    London Stock Exchange seeks a Senior Developer for their Regulatory News Service team. You will engage in full lifecycle Agile development, focusing on coding, testing, and improving service delivery through technical solutions. The role requires proficiency in Java and Agile methodologies while workin ...

    Hybrid T24 Developer for Temenos Migration – London

    TrinIT Group is looking for a T24 Developer to join their team in London on a 6-month contract. This hybrid role requires 50% onsite attendance and offers £425 per day. The role focuses on supporting a major Temenos T24 migration and upgrade programme, requiring experience with T24 development and Oracle data ...

    Backend Java Engineer for CCR Risk & Margin Platforms

    Crisil Integral IQ is seeking an experienced Backend Java Developer in Greater London to build and enhance scalable, high-performance applications within a financial services environment. The ideal candidate will have strong technical expertise, particularly in Counterparty Credit Risk, collateral management, ...

    Netsuite & Salesforce Engineer (Contract) – London

    Java Script Works is looking for a Netsuite Developer with experience in Salesforce to join their team in London, UK. Candidates should be proficient in JavaScript and SuiteScript, with strong knowledge of client-side technologies and web services. This contract role offers exposure to competitive compensation a ...

    Senior Java Backend Engineer – Real Time, Low Latency, WFH

    Client Server Ltd. is looking for a Backend Software Engineer / Developer in London, offering a salary up to £100k along with a competitive benefits package. You will work on complex, real-time trading systems within a supportive Agile team. The ideal candidate has strong Java backend experience, with ...

    Senior Full Stack Engineer — React/Node/Python & DevOps

    Java Script Works is looking for a skilled developer based in Greater London, United Kingdom. The role requires over 5 years of experience with React.js and Node.js, alongside knowledge of Python and various frameworks such as FastAPI and Django. A strong background in stakeholder management and participation in ...

    Senior Backend Engineer, Subscriptions — Global APIs & Scale

    The Consulting Solutions is seeking an experienced backend developer to join their team in London. You will collaborate closely with cross-functional teams to build scalable subscription conversion experiences and develop backend services using Java and gRPC. The ideal candidate has over 5 years of exp ...

    Crypto Quant Developer: High Frequency Trading & AI

    A global leader in digital assets is looking for a highly skilled Quantitative Developer for their Crypto trading desk. In this role, you will work closely with traders and quantitative analysts to design and optimize trading algorithms and models. The ideal candidate will have strong programming skills in Java ...

    HFT Quantitative Developer Graduate – Onsite London

    Queueco in Greater London is searching for a bright graduate to join as a quantitative developer focused on High-Frequency Trading. The role involves working with traders and researchers to understand market data and develop low-latency solutions. A Bachelor’s or Master's degree in a relevant field is required, ...

    VP of Low Latency EMS/SOR Trading Architecture

    A leading digital assets firm in Greater London is seeking an experienced EMS / SOR Developer to design and implement a low-latency trading system. The role demands strong Java programming skills, extensive experience developing routing strategies, and a solid understanding of algorithmic trading environments. R ...

    Senior Backend Engineer for AI Powered SaaS

    A fast-growing AI company in London is seeking a Back-End Developer to design and maintain systems for their innovative AI-powered products. You will collaborate with senior engineers and data scientists, optimize performance, and contribute to system enhancements. Ideal candidates will have 3-5 years of back-en ...

    Senior Front Office Developer, Crypto HFT & Trading Systems

    A boutique alternative asset manager in Greater London is looking for a Front-Office Developer specializing in high-frequency trading for cryptocurrencies. The successful candidate will design and implement trading algorithms and work closely with quantitative teams. A strong background in high-performance Java ...

    Quantitative Developer, Risk Tech — Python & AWS

    Millennium is seeking a Quantitative Developer to join our Risk Technology team in London. The successful candidate will leverage their skills in Python, AWS, and data manipulation to provide risk managers with data-driven insights on our fund's risk profile, specifically related to technology and data science. ...

    Lead Full Stack Engineer: Node/TS/React, AWS

    Java Script Works is looking for an experienced software developer based in Greater London, United Kingdom, with strong expertise in Node.js and Typescript. The ideal candidate will have a minimum of 5 years of backend experience and 3 years of UI development in React. Responsibilities include optimizi ...

    C# .NET Developer – Insurance Tech, SQL & Office

    Onyx-Conseil is seeking a C# .net Developer to join their insurance underwriter team in City of London. The role requires a deep understanding of C# development, along with skills in Java/jQuery and SQL Server. The ideal candidate will have 5-7 years of experience, strong communication abilities, and a ...

    Senior Java Rates Engineer Low Latency Trading (London)

    A leading financial technology firm based in London is seeking an experienced Senior Rates Developer for a 12-month contract. The role involves developing low-latency pricing components and enhancing trading workflows. Ideal candidates will have strong Java server-side development skills and experience in Rates ...

    Low Latency Algo Dev EMS/OMS & SOR Engineer (Hybrid)

    Harrington Starr is seeking an experienced Algo Developer to join their London engineering team. This role focuses on designing and building a low-latency, high-throughput trading system within the digital asset space. Ideal candidates will have over 8 years of Java experience with a proven record in execution a ...

    London Based Platform Engineer: AI Driven Subscriptions

    Zuora is seeking a developer for their London office to contribute to Zephr, a key subscription experience platform. This role involves creating innovative solutions for a high-throughput application and developing secure APIs. Candidates should be proficient in Java or Kotlin, with experience in JavaScript or T ...

    Senior Frontend Developer — Vue.js + TypeScript

    Java Script Works is seeking a skilled Frontend Web Developer based in Greater London, United Kingdom. The role requires a minimum of 5 years of experience and expertise in JavaScript, TypeScript, and CSS. Experience with Vue.js (2) is a must. This full-time position offers a competitive salary and the opportuni ...

    Full Stack React & Python Engineer (Next.js/TS)

    Java Script Works is seeking a talented Full Stack Next.js / Python Developer in Greater London. The ideal candidate will have strong expertise in Next.js, Python, mySQL, and experience with React and React Native. This role involves building dynamic applications and contributing to exciting projects in a collab ...

    Frontend Developer Shopify & E‑commerce

    Java Script Works is seeking a Front-end Developer to contribute to their Digital team and enhance the e-commerce development roadmap. The role demands strong skills in HTML, CSS, and JavaScript, with experience in Shopify. Ideal candidates should be highly self-motivated and able to multi-task effectively. This ...

    Remote Frontend Dev (React/Angular) – HTML5, JS, EMI Options

    Java Script Works is looking for an experienced Frontend Developer in the UK, proficient in both React and Angular. You'll work on multiple platforms while contributing to an innovative fintech startup. The role promotes remote work and offers flexible hours, ensuring a great work-life balance. The com ...

    Lead HTML5/CSS MVC Frontend Developer

    Java Script Works is hiring an HTML5 CSS MVC Developer based in London, United Kingdom. This full-time role revolves around leading frontend development and ensuring the maintenance of the web platform using HTML5, JavaScript, and CSS3. The ideal candidate should have solid experience in the tech stack ...

    Java Backend Engineer – Incident Response & Reliability

    A technology solutions firm in Greater London seeks a skilled 3rd Line Back End Developer to tackle complex issues in live systems. The role requires a strong background in Java and server environments, with responsibilities that include diagnosing defects, developing solutions, and collaborating with various te ...

    Backend API Developer: Python/Node.js & Microservices

    Java Script Works is seeking a Software Developer in London to develop scalable software solutions, writing clean and efficient code in languages such as Python and JavaScript. The role requires participation in code reviews, testing cycles, and API development. The position offers a competitive salary ...

    React Frontend Engineer — Admin Dashboards & Real‑Time Data

    Java Script Works based in Greater London is looking for a skilled web developer to design and develop new back office applications using TypeScript, React, and Redux. You will work closely with backend developers, and cross-functional teams ensuring the best performance of web applications. The ideal ...

    Dev Productivity Engineer — Accelerate Engineering Velocity

    Palantir, located in London, is hiring a Software Engineer to enhance developer productivity. This role involves building software at scale to support various engineering activities and improve workflows. Candidates should have over 2 years of software engineering experience and be proficient in languages like J ...

    Mobile Voice Platform Engineer (Android)

    Mobilus Labs is seeking a Mobile Software Developer to help design, develop, and test a voice communication mobile application. This full-time role is based in London, UK. The ideal candidate should possess strong Java and/or C/C++ skills and experience with Android SDK. Responsibilities include continuing devel ...

    Senior ASP.NET MVC Developer – Investment Tech

    Java Script Works is seeking a Senior ASP.NET MVC Developer to join their London team. This full-time role offers a salary of up to £50K and requires strong skills in C#, SQL Server, and front-end technologies like JavaScript, HTML, and CSS. The ideal candidate will have experience in Systems Analysis and an und ...

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