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

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React.js Engineer for Quant Hedge Fund (Typescript)

Java Script Works is seeking a React.JS Developer to join a prestigious hedge fund located in Greater London. This role offers a competitive salary of £120,000 plus bonuses. The ideal candidate will possess strong expertise in JavaScript and Typescript, alongside ReactJS development. The successful can ...

Backend Engineer — Python + PostgreSQL, Ship Complex Features

Java Script Works is looking for a backend developer based in Greater London. Candidates must have proven experience with backend focus, particularly in Python and PostgreSQL, and should be effective communicators capable of breaking down complex technical information. Familiarity with TypeScript, React, and oth ...

Graduate Quant Developer Greenfield Tech & Trading

An elite global trading firm is seeking a Graduate Software Developer to work on innovative projects that integrate technology, mathematics, and finance. The role emphasizes strong programming skills in languages such as Python, C++, Java, or C#. Candidates will collaborate closely with leading experts and contr ...

FinTech Backend/Full Stack Dev — Hybrid/Remote, Payments

A growing FinTech company in Greater London is seeking a passionate FinTech Developer to create secure, scalable financial applications. You will be responsible for developing payment systems, integrating banking APIs, and ensuring compliance with data protection regulations. The ideal candidate has 3 to 6 years ...

Client Side JavaScript Engineer — Build & Launch Features

Java Script Works is seeking a Client Developer based in Greater London, England, to manage the development and delivery of client-side components. The ideal candidate will have strong JavaScript skills, including experience with vanilla JS, prototypes, and design patterns. You will be responsible for ...

Web Designer & Front End Developer (React/WordPress)

Java Script Works in Greater London is seeking a Web Design & Developer to build and maintain websites following branding guidelines and accessibility standards. The role requires experience with JavaScript, PHP, HTML, CSS, and frameworks like React and WordPress. You'll collaborate with stakeholders to deliver ...

Hybrid Backend Engineer (Java/Kotlin) on AWS | Lead & Mentor

A leading software company in London is seeking a Backend Software Engineer/Developer proficient in Java and Kotlin to join their team. This role offers a hybrid work-from-home flexibility and the opportunity to work with emerging technologies. Candidates should have strong experience in server-side development ...

Senior Front Office Software Engineer (C#/Java/.NET)

hackajob is seeking a Senior Front Office Developer based in London. You will turn complex challenges into innovative software solutions using Python, Java, .NET, and web services. The role involves extensive collaboration, development, and adherence to secure coding practices. Successful candidates wi ...

Cloud Native Java Spring Boot Back End Engineer (GCP)

Methods is seeking a Back End Developer specializing in Java Spring Boot and Google Cloud Platform for their private Sector Business unit. The role involves a 6-month project focusing on migrating and rebuilding core architecture. Join the team and play a pivotal role in optimizing technical connectors ...

Software Engineer (Java/Scala) – Trading Systems

A leading financial technology firm in the City of London seeks an Associate Developer to join a small agile team that builds sophisticated software solutions. You will work closely with client teams to design and implement solutions for complex problems, requiring strong skills in Java and/or Scala. The role of ...

Junior Mobile Engineer (Android/iOS) – Mandarin Fluency

Mandarin Recruitment is seeking a Junior Mobile Developer in Greater London. This role involves the development and deployment of applications, contributing to the development team with a focus on enhancing consumer experiences through technology. Candidates must have a recent Computer Science degree a ...

Senior Software Engineer: AI Driven Platform (London)

Zuora Inc in Greater London is looking for a skilled developer to contribute to their subscription experience platform, Zephr. The role involves leading the development of public-facing applications while ensuring high performance and security. Key responsibilities include designing innovative solution ...

Python Full Stack Developer – Django | Finance & Quant

Java Script Works is seeking a Python Full Stack Developer to join a high-profile client in London. The successful candidate will need a degree in Stats, Physics, or Engineering, with strong Python and Django development experience, along with some frontend JavaScript skills. This role offers an exciting opportu ...

Senior Full Stack Engineer (TypeScript, React & GraphQL)

Java Script Works in Greater London seeks a skilled developer to design, develop, and maintain web applications and RESTful APIs using TypeScript, GraphQL, React, and Node.js. The ideal candidate will have strong proficiency in TypeScript and JavaScript, with experience in React and state management libraries li ...

Hybrid Quant Python Engineer — London, High Growth

Java Script Works is seeking a talented developer to join a leading Quant Investment management firm in London. This role offers an excellent working environment with ongoing training and a structured career path. You can expect a competitive salary along with a substantial bonus from day one. Skills required in ...

Elite High Touch Trading Developer: Low Latency Connectivity

Harrington Starr is seeking an experienced High Touch Trading Developer in London to build client-facing trading infrastructure. This role offers a competitive salary up to £160,000, a performance bonus, and comprehensive benefits. Key responsibilities include designing and implementing trading platfor ...

Junior Trade Desk Developer in London Quant Capital

Junior Trade Desk Developer Quant Capital London, United Kingdom Posted about 1 year ago This is a job posted by our partner Jooble Tech stack Java Python STEM Below is a snippet of the job description. To read the fu ...

Senior Java Software Engineer Quote API Engineering Enablement

Join the Engineering Enablement team at the heart of Quote Modernisation the most significant engineering transformations Quote has undertaken in recent years. Quote is the mission-critical pricing and promotions platform serving over 28 million UK shoppers every week across every channel, from tills to we ...

Back End Developer

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

Back End Developer

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

EP Developer 140

Location: London Job Type: Contract Industry: Cloud & Platform Job reference: BBBH441833_1782229376 Posted: about 7 hours ago Early Professional - Application Developer (Java & Web Technologies)London (preferred) - Hybrid (UK-based)12-month assignment BPSS (mandato ...

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 ...

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 ...

Frontend Engineer: React, TypeScript & GraphQL

Java Script Works is looking for a Frontend Developer based in London, United Kingdom. In this role, you will be responsible for building complex user interfaces with a focus on performance improvement. You must have extensive experience with TypeScript, React, and GraphQL. This full-time position offers a compe ...

PHP Laravel Full Stack Developer: APIs & Frontend

Java Script Works located in Greater London is looking for a skilled developer to join their team. Responsibilities include backend development with Laravel, creating RESTful APIs, and implementing user-friendly front-end interfaces using HTML, CSS, and JavaScript frameworks. The ideal candidate should ...

Frontend Engineer (Mid Level) — TypeScript & React, London

Java Script Works is looking for a Mid-level Frontend Developer based in London, UK. The role involves designing, developing, and maintaining web applications using modern technologies such as TypeScript, React, and Redux. You will build responsive and scalable user interfaces that handle real-time data interact ...

Senior PHP Engineer — Laravel, GCP/AWS

Java Script Works is looking for a Senior PHP Developer to join their team in London, United Kingdom. The ideal candidate will write clean, testable code and have experience with GIT, HTML, CSS, JavaScript, and cloud services such as GCP and AWS. This full-time role offers a competitive salary of up to ...

Node.js Developer — Build Scalable, Secure APIs

Java Script Works in Greater London seeks an experienced Node Developer to enhance its team. The role involves developing and maintaining server-side applications and APIs, ensuring optimal performance and security. The ideal candidate must have proven experience in Node.js and a strong knowledge of Ja ...

Frontend Developer with AWS & React — Internship

Java Script Works is seeking a Front End Developer intern based in London, United Kingdom. The role demands strong proficiency in React Fundamentals, an understanding of AWS cloud services, and solid DevOps principles using Docker. Ideal candidates will demonstrate experience in end-to-end testing to ensure high ...

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 ...

FinTech Node.js Developer Build & Maintain Modern Apps

Java Script Works is seeking a Node.js Developer in Greater London, United Kingdom. The ideal candidate will have solid experience with Node.js and a background in building innovative financial services products as well as maintaining existing applications. This role offers the chance to work with cutting-edge d ...

Trading Systems Engineer: Systematic Market Making

Quant Capital is looking for a Trading Systems Software Developer based in London, United Kingdom. The ideal candidate will have a solid command of computer science fundamentals and experience with trading systems. Responsibilities include implementing core components primarily in Kotlin and ensuring system reli ...

Java/Kotlin AVP, Prime Brokerage Tech — Hybrid Role

A leading global financial institution in Greater London seeks an experienced developer to engineer solutions within Prime Brokerage Technology. This role focuses on Java and Kotlin components, contributing to CI/CD practices and collaborating with stakeholders. The ideal candidate has a proven App Dev backgroun ...

Senior ETRM Applications Lead for End to End Trading

Castleton Commodities International is looking for a Senior ETRM Application Developer to join their Commodities Trading Application Development team in Greater London. This position involves designing and supporting applications that facilitate end-to-end commodities trading. Candidates should have over 10 year ...

Senior JVM Live Debugger Engineer | AI Driven Production

A leading developer tools company is seeking a Senior Software Engineer in Greater London. This role focuses on enterprise JVM experience and exciting engineering challenges involving AI integration. Responsibilities include designing product features and developing tooling for AI-first workflows. The ideal cand ...

Rates Quant Developer VP: Build Production Trading Systems

A leading global financial services firm in Greater London is seeking a Quantitative Developer, Rates – Vice President. In this role, you will design and deliver production systems for systematic trading, partnering closely with researchers and traders. Candidates should have strong programming skills in Java or ...

Rates Quant Dev VP: Build Production Trading Systems

A leading financial services firm in the UK is seeking a Quantitative Developer, Rates – Vice President to design and deliver production systems for systematic trading. You'll work closely with researchers and traders to implement resilient, performant algorithms and enhance execution platforms. The ideal candid ...

Java FinTech Microservices Engineer — Global Relocation Included

A global e-commerce company is seeking a Software Developer to contribute to high-scale products and see the real-world impact of their work. The role involves creating scalable systems, advocating best practices, and working within a performance-driven culture. Ideal candidates should have solid software develo ...

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 ...

Senior Java Engineer Remote Trading Platform

Role, Inc. is looking for a seasoned developer to enhance its cutting-edge derivatives exchange platform. This role requires 5+ years of Java programming experience, ideally in financial services, to contribute to full-stack project lifecycle. Successful candidates will enjoy benefits like competitive ...

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 ...

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 ...

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