senior java developer jobs in London

The London Metal Exchange Limited is seeking a Senior Engineer to advance LMEsmart—our Inter-Office Trading platform. You will engineer resilient integrations and workflows, automate test tooling, and drive real-time performance insights across trading operations.You will work with Java (JVM), cloud environments, Kafka, and containerized deployments to...

ARQ in London is hiring a Senior Software Engineer (Java) to design, build and scale backend systems that power our fintech products. You will work in a hybrid setting, contributing to REST APIs, microservices and payments workflows, while shipping high-quality code with a focus on maintainability and performance.Join a world-class team that values speed,...

Hunter Bond seeks a Kafka Engineer/Java Developer for a FinTech client in London. The role is hybrid, focusing on building distributed, low-latency systems within a high-calibre team.You will mentor juniors and help evolve infrastructure while delivering robust, scalable software. Salary up to £130,000 plus bonus, with a supportive, innovative culture and...

IG Group is looking for a Senior Software Engineer to strengthen the Order Management System (OMS) on our trading platform. You will design and build Java services where correctness and latency are critical, ensuring the order flow is accurate, auditable, and highly available.You will join a small, cross-functional team that owns services end to end and...

The Senior Software Engineer will join a high-performing backend engineering team responsible for building and scaling modern, cloud-native platforms that power customer-centric financial products. You’ll play a key role in designing and delivering resilient, secure, and high-performance systems, working within collaborative squads focused on solving...

Fractal Analytics UK Limited is seeking a Senior Software Engineer to design, build, and support scalable backend services for banking and financial services.You will lead architectures, mentor engineers, and collaborate with product, security, and operations to deliver resilient, cloud-native microservices in a fast-paced, on-site London environment. The...

Netcompany is seeking a Managing Architect to lead end-to-end solution definition and delivery across multi-workstream programmes. You will translate complex requirements into executable architectures, validate assumptions with proofs-of-concept, and provide technical leadership throughout the lifecycle.You will own specifications, govern quality and...

Scrumconnect Consulting in London is seeking an experienced Backend Developer to design, build, and maintain scalable, secure server-side services and APIs, while advancing Agentic AI capabilities within our engineering platform. The role sits at SFIA Level 4, working under general direction with some autonomy and mentoring of junior engineers.Our projects...

Zühlke Engineering Vietnam LLC. is seeking a Senior Fullstack Developer to join a high-performing engineering squad in London or Manchester.You will work on backend-led services using Kotlin or Java 17+, building APIs and event-driven flows, and contribute to modern web interfaces with React and TypeScript. The role emphasizes AI-augmented engineering and...

Citi London is seeking a Senior Blockchain Engineer to join the Digital Assets Platform. You will contribute to the Citi Integrated Digital Assets Platform (CIDAP), building enterprise-grade web applications with a strong Java backend and Web3 integration.The role requires hands-on development, collaboration across teams, and a proactive, startup-minded...

Haley Bridge is recruiting a Senior Java Developer to join their technology team, building bespoke systems across banking, financial services and private capital. You will own complex Java systems close to the trading lifecycle, delivering high-performance software for Front Office and trading functions.London-based, office-centric role that emphasizes code...

IG Group in London seeks a Senior Software Engineer (Java/AI) for Brokerage Services to push AI across engineering, from coding to deployments. You will build tooling, ensure safe AI integration with Jira, Confluence, and CI/CD, and mentor others while delivering robust backend systems.The role emphasizes test-driven development, ownership of features from...

Fasanara Capital is hiring an experienced Java Software Engineer to join Fasanara Digital and take ownership of systems powering 24/7 trading activity. You will develop and maintain a collateral management platform, reference data, and accounting infrastructure for both digital assets and traditional markets.You will work on hands-on development across new...

OverviewA leading real estate developer and investment manager, specialising in value-add and sustainable development of industrial & commercial properties across the UK and Europe, is seeking an ambitious and commercially minded Senior Development Analyst. The business manages a substantial and diverse portfolio, combining integrated investment, development...

Job Description Join our team at the Guardian and be a part of a diverse and inclusive global organisation that delivers fearless, investigative journalism and holds power to account. Our team of award-winning journalists, cutting-edge commercial professionals and industry-leading digital experts are committed to making a difference and represent a wide...

We are a Global Recruitment specialist that provides support to the clients across EMEA, APAC, US and Canada. We have an excellent job opportunity for you. Role Title: Senior Snowflake Developer Location: London (Hybrid - 2/3 days per week) Duration: 05/04/2027 Pay rate: £537 per day all inc. (PAYE through FCSA Umbrella) Role Description We are seeking an...

Get AI-powered advice on this job and more exclusive features.This range is provided by Tech4. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay rangeDirect message the job poster from Tech4Senior Python Developer (PYTHON/AWS/REACT) - health tech - tech for good, make a positive impact on the...

Our client is looking for a Senior Salesforce Developer responsible for hands-on Salesforce development and platform optimisation. This role focuses on designing and delivering scalable, high-performing solutions across Salesforce Service Cloud and Marketing Cloud.Location: London, United KingdomSalesforce Development and Technical DeliveryDesign and...

About Echobox: We are a fast-growing, research-driven company building an artificial intelligence that helps online publishers overcome the challenges they face every day. Using novel AI, we are revolutionising the publishing industry and have a track record of building things that others have ruled out as impossible. Leading names from around the world rely...

Job Summary Join Insulet's growing Web Development team and lead the design and development of enterprise-scale Drupal 11 solutions that support people living with diabetes. This is an exciting opportunity for an experienced full-stack developer to influence architecture, mentor engineers, and drive innovative web experiences while working with Drupal,...