150,871+ Lead Java Application Developer Java Web Tech Jobs in London, UK — Local Employers Hiring June 2026

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Senior Software Engineer II GraphQL/Java Spring Flexible

LexisNexis Risk Solutions is seeking a Senior Software Engineer II (Java / Spring) to build scalable, high-performance data-driven applications. You'll work on the Search and AI Platform, delivering innovative solutions that accelerate scientific discovery. The ideal candidate has expertise in Java, Sp ...

Backend Engineer Java & Spring Boot for High Concurrency

JD.COM is looking for a professional to develop and maintain transaction-related backend services using Java and Spring Boot in London. The role involves building core business processes while ensuring system reliability and data consistency. The ideal candidate should have a Bachelor's degree in Compu ...

Senior Java/Kotlin Engineer Fintech Scale up Leader

An innovative fintech company in London seeks a Lead & Senior Software Engineer to drive product development and shape the future of digital finance. You'll be the technical heartbeat of the team, building scalable business products and leading a culture of collaboration. The ideal candidate has expertise in JVM ...

Senior Java/Kotlin Backend Engineer – FinTech, Hybrid London

Senior Software Engineer - Java / Kotlin (Financial Services)We're supporting a major financial services programme that is scaling rapidly and looking to add several experienced backend engineers to the team.We're looking for strong Software Engineers with proven experience building s ...

Senior Java Engineer – Real Time, Low Latency Trading

Artemis Talent Group Ltd is seeking a Senior Java Engineer for a hybrid role based in Greater London or New York. The candidate will focus on building low-latency trading systems critical for global markets. This position requires over 6 years of Java expertise, experience in high-performance environments, and a ...

Full Stack Software Engineer – Java/Spring (Onsite UK)

A leading aerospace and defense company in the UK seeks a Software Engineer to join its teams in various locations. This full-time role involves designing and building software for critical projects in a cross-functional team environment. Candidates should have full stack experience, Java development skills, and ...

Senior Java/Spring Boot Technical Architect – Public Sector

Methods Business and Digital Technology is seeking an experienced Technical Architect specializing in Java and Spring Boot. This role focuses on supporting public sector clients in digital transformation projects and requires hands-on experience in architecture and governance. Successful candidates wil ...

Senior Java/Spring Boot Technical Architect – Public Sector

Methods Business and Digital Technology Ltd is seeking a Technical Architect with strong Java and Spring Boot experience. The ideal candidate will lead architecture and technical governance for critical public-sector transformation projects. Responsibilities include defining technical requirements, guiding se ...

VP, FX Trading Technology – Java & Low Latency Architect

United States Digital Space LLC is looking for a candidate to implement FX trading systems as part of a high-performing team. This role involves collaboration across different teams in FX Trading Technology to enhance system architecture and delivery quality. The ideal applicant should have a proven un ...

Senior Java Solutions Architect — Oracle CX Cloud PaaS

A leading technology consultancy in Greater London seeks a Java Specialist to design and implement innovative Oracle Java Cloud applications within its rapidly-growing Oracle CX Cloud Practice. Candidates should have at least 3 years of experience in Java/J2EE development, a proven track record in building APIs, ...

Senior Software Engineer, XiP Risk Engine (Java/Spring)

Job Search Place Limited is seeking a Senior Engineer to be the Applications Development Technology Lead Analyst for the XiP large scale distributed calculation platform. In this pivotal role, you will design and enhance the calculation engine, managing risk calculations efficiently. Ideal candidates w ...

L2 Support Engineer: Java/DB, Weekend TOIL – London

N Consulting Ltd is seeking an L2 Support Engineer based in London, United Kingdom. This contract position requires strong Java and database skills, along with good communication abilities. Candidates will be responsible for providing L2 support and will participate in weekend shifts, compensated with time off i ...

Junior Java Full Stack Engineer Training, Cloud & Growth

Capgemini Invent is looking for a Junior Full Stack Engineer to join their Digital Excellence team in London. The candidate will be responsible for developing clean code, troubleshooting system issues, and collaborating with teams and clients. A degree in Computer Science and experience with Java applications ar ...

Senior Java Software Engineer Quote API Engineering Enablement

Join the team behind Price Service —a mission‑critical HTTP API powering pricing and promotions across all of Tesco’s channels. From tills to websites and everything in between, our work touches the lives of over 28 million UK shoppers every week , with global reach on the horizon. We ...

Full Stack Engineer (Python and/or Java) – VP

Department Overview Equities Technology at Citi is undertaking a bold, multi‑year transformation to build a best‑in‑class global platform across execution, prime, clearing and cross‑product margining. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, ...

Senior Java Backend Engineer — Pricing API & Cloud Systems

Salt Digital Recruitment is looking for a Senior Software Engineer to join their London office on a 6-month contract with a day rate of £400 - £500. The role requires strong experience with Java and cloud platforms, and focuses on designing scalable backend systems and maintaining cloud-native infrastructure. ...

Java Cloud Engineer for AI Driven Research Tools

RELX INC is seeking a Java Software Engineer in Greater London to create products that enhance the sharing of scientific knowledge. In this role, you will design, develop, and deploy applications in a cloud ecosystem, collaborating with dynamic teams to meet business requirements in an Agile setting. Ideal candi ...

Hybrid Java Backend Engineer for Scalable Data Platform

A leading technology recruitment firm is seeking a Java Software Engineer to join a technology team focused on building a greenfield data platform. This hybrid position offers a base salary of up to £175,000 plus bonuses and represents a chance to enhance your skills in a fast-paced environment that emphasizes i ...

Full Stack Engineer (Python and/or Java) – VP

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build ...

Senior Java Architect – Real‑Time API Platform Leader

Morgan Stanley is seeking a Senior Software Engineer to join the FID eTrading team in London. This critical position demands a highly skilled hands-on Java developer with extensive experience in real-time systems and internet-facing APIs. Responsibilities include leading architectural decisions and delivering ...

VP, FX Trading Technology – Java & Low Latency Architect

United States Digital Space LLC is looking for a candidate to implement FX trading systems as part of a high-performing team. This role involves collaboration across different teams in FX Trading Technology to enhance system architecture and delivery quality.The ideal applicant should have a proven und ...

Senior Java/Spring Boot Technical Architect – Public Sector

Methods Business and Digital Technology Ltd is seeking a Technical Architect with strong Java and Spring Boot experience. The ideal candidate will lead architecture and technical governance for critical public-sector transformation projects. Responsibilities include defining technical requirements, guiding se ...

Senior Software Engineer, XiP Risk Engine (Java/Spring)

Job Search Place Limited is seeking a Senior Engineer to be the Applications Development Technology Lead Analyst for the XiP large scale distributed calculation platform. In this pivotal role, you will design and enhance the calculation engine, managing risk calculations efficiently.Ideal candidates wi ...

Cross Border Payments Java AVP Hybrid, AI First

A leading global bank in Greater London is looking for a Cross Border Payments Developer (AVP) to join its FX Technology team. The role involves Java development in a collaborative, AI-focused environment, enhancing systems and participating in modernization efforts. Candidates should possess strong communicatio ...

Senior Java/Spring Boot Technical Architect – Public Sector

Methods Business and Digital Technology is seeking an experienced Technical Architect specializing in Java and Spring Boot. This role focuses on supporting public sector clients in digital transformation projects and requires hands-on experience in architecture and governance.Successful candidates will ...

Backend Engineer Build Scalable Systems for 1M+ Users

DEPOP is looking for a talented Backend Software Engineer to join our team in Greater London. This role involves collaboration with cross-functional teams, including mobile, web, and machine learning. You will design and develop high-quality code used by millions of daily users. The ideal candidate has ...

Product Engineer

WireMock is the industry standard for API environment simulation. With a massive global open-source footprint and deep adoption across the Fortune 500, we provide the critical infrastructure that engineering teams use to de-couple development from fragile dependencies. As AI agents and LLM-integrate ...

Engineering Manager Financial Services Company (Global Market) £100k + Annual Profit Share [...]

Engineering Manager - Financial Services Company (Global Market) - £100k + Annual Profit Share - React/ Java/ Spring (20% hands on) Engineering Manager - Financial Services Company (Global Market) - £100k + Annual Profit Share - React/ Java/ Spring (20% hands on) 15 minutes ago Be among the ...

QA Engineer (Associate) in London Calastone

QA Engineer (Associate) London, United Kingdom Posted 9 months ago This is a job posted by our partner Jooble Tech stack API SQL UI Databases Java C REST QA Engineer Tools and Technique ...

FRTB Market Risk Quant Consultant Contract 1Y in London Quant Capital

FRTB Market Risk Quant Consultant - Contract 1Y London, United Kingdom Posted 10 months ago This is a snippet of the job description. To read the full text, please click on the Apply Now link. Tech Stack Java C Contract SQL R ...

Backend Engineer: Search & ML Driven Recommendations (London)

JD.COM is seeking a skilled backend developer in Greater London to design and develop backend services for search functionalities. The role involves collaboration with machine learning engineers, ensuring system scalability and reliability. Applicants should possess a Bachelor's degree in Computer Scie ...

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 ...

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, ...

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 ...

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. ...

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 ...

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 ...

Backend Developer: Real Time, Scalable APIs & AI/ML

Scrumconnect Consulting is seeking a Backend Developer to build scalable systems and integrate AI/ML capabilities. The role focuses on designing robust backend services while collaborating with various teams to ensure optimal performance. Ideal candidates should have strong programming skills in langua ...

Platform Engineer: Distributed Systems & Cloud

A leading technology company in London is seeking a skilled software engineer to join their Platform Engineering team. The role involves building and maintaining critical financial infrastructure, working on high-availability distributed systems, and enhancing developer tooling. Ideal candidates will have 3+ yea ...

Senior eFX Engineer: High Frequency Trading

STATE STREET CORPORATION is seeking an enthusiastic full-stack developer to join their EFX London team. The role requires writing high-performance Java and Rust code while working on bespoke trading solutions that operate globally. The ideal candidate has extensive experience in automated trading and f ...

Front Arena Developer: Python in Finance

Onyx-Conseil is seeking a Front Arena Developer for a 6-month project in Central London. The ideal candidate will have at least 2 years of experience with Front Arena and Python development in a financial setting. Responsibilities include maintaining and developing new code within Front Arena. Additional experie ...

Managing Consultant Endur Technical

Europe or Remote (Permanent/Contract) Key Responsibilities Serve as a technical subject matter expert on Endur, providing guidance and support throughout the project lifecycle. Lead the technical implementation of Endur solutions, inclu ...

Managing Consultant Endur Technical

Europe or Remote (Permanent/Contract) Key Responsibilities Serve as a technical subject matter expert on Endur, providing guidance and support throughout the project lifecycle. Lead the technical implementation of Endur solutions, inclu ...

Managing Consultant Endur Technical

Europe or Remote (Permanent/Contract) Key Responsibilities Serve as a technical subject matter expert on Endur, providing guidance and support throughout the project lifecycle. Lead the technical implementation of Endur solutions, inclu ...

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, ...

Front Office Tech Developer

Experience Required• Minimum of to years of Java development, design and testing experience with prior financial industry experience. Knowledge of Spring Framework beneficial.Qualifications• This role is ideally suited for a very delivery focused technologist and someone looking to gain ...

Front Office Tech Developer

Experience Required• Minimum of to years of Java development, design and testing experience with prior financial industry experience. Knowledge of Spring Framework beneficial.Qualifications• This role is ideally suited for a very delivery focused technologist and someone looking to gain ...

Full Stack Engineering Lead, Vice President

Are you looking for a career move that will put you at the heart of a global financial institution? We are seeking a talented and passionate Senior Engineering Lead to join Finance Technology team. You will be a key contributor to the re-platform of our existing applications to support Finance business. You will ...

Applied Scientist — AI Driven Formal Verification

Amazon Web Services (AWS) is seeking an applied scientist to join the Agentic Automated Reasoning Group in London. This role focuses on developing software verification tools using AI and formal methods. The ideal candidate will have a Master's degree and programming expertise in Java, C++, or Python, ...

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