senior java developer jobs in London

Grid Dynamics recruits a Senior Low-Latency Java Engineer to optimize FX eTrading latency and build high-throughput, low-GC Java systems. You will profile, tune, and shape JVM behavior while collaborating with quants and traders to enhance order execution and market data delivery.Join a team working with Ambrosia and telemetry stacks, leveraging cutting-edge...

Orbis Group in London is seeking a Senior Java Engineer to build and enhance front-office trading technology. You’ll develop pricing, risk, hedging and trading-logic components, and take ownership from requirements through delivery.The role combines improving existing production systems with building new modules from scratch, with a focus on Java, trading...

A tech recruitment firm in the UK is seeking an experienced Java Developer for a hybrid position, requiring one day per month in the London office. The role is an initial 6-month contract focused on developing and enhancing scalable backend systems. Candidates should have strong experience in Java, solid understanding of object-oriented design, and be...

Gazelle Global Consulting Limited seeks a Senior Java Low‑Latency Developer for a 12‑month contract in London. The role is hybrid, three days a week, and focuses on building high‑performance trading and Direct Market Access platforms.You will work with product, engineering, QA and production support to turn requirements into robust, scalable solutions...

JPMorganChase in London is seeking a Lead Software Engineer to join Corporate Technology. You will be a core technical contributor, building, securing, and delivering trusted market-leading technology products in a scalable way.You will drive multiple design and development efforts, collaborating with vendors and internal teams to shape architecture and...

JPMorgan Chase is seeking a Senior Lead Software Engineer within CIB – Markets Technology. You will lead agile teams responsible for building and delivering secure, scalable technology products across multiple applications.You will apply deep technical expertise in Java, drive architecture improvements, and mentor engineers while partnering with business...

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious objectives.The role emphasizes...

Placements24 in East London seeks a Senior Software Engineer to design, develop, and maintain robust backend services using Java and the Spring Boot framework. You will collaborate with cross-functional teams and mentor junior engineers to drive architectural decisions.The role focuses on scalable microservices, RESTful APIs, and relational databases within...

Explore Group is seeking a Software Engineer (Java) to join our engineering-led consultancy. You will design, build, and evolve high-throughput backend services and APIs, with a focus on reliability, observability, and scalable design.You will work in an environment that emphasizes sound CS fundamentals, pragmatic delivery, and strong client collaboration,...

McGregor Boyall partners with a leading global investment bank to hire a hands-on low-latency engineer for its specialist electronic trading technology team in London. The role focuses on building Java and Rust event-sourcing frameworks that power ultra-fast algorithmic trading platforms at scale.You will contribute across the full stack, optimize JVM and...

Omnicom is seeking an experienced Senior Backend Developer to join the London team. You will be responsible for developing high-performance Java applications, driving architectural decisions, and collaborating with cross-functional teams on automotive-brand projects.Key focus areas include Spring Boot-based microservices, RESTful APIs, and modern CI/CD...

Energy Jobline CVL in London is seeking an exceptionally experienced software professional to guide a domain spanning vanilla financial products and cutting-edge tech stack. The role requires 15+ years of industry experience and at least 5+ years in banking or trade management, with hands-on development across front-end and back-end systems.You will work...

IG Group's Prime division is seeking a Senior Java/FIX Engineer to design and modernise high‑performance trading APIs used by institutional clients. You’ll own services end to end, from architecture through production, focusing on resilience, latency and correctness in real‑time markets.You’ll work on REST, streaming and FIX APIs, modernising the FIX...

Citi in London is seeking a Senior Low Latency Engineer to join the High Performance Architectures team. You will work on Java/Rust based low-latency services, focusing on trading systems and market data replay utilities.The role requires SME-level Java expertise, strong collaboration with multiple teams, and mentoring responsibilities. Hybrid working...

CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform in London. This hands-on role is at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical.You will design and...

ROLE DETAILS SBU - Invent CU - Business Technology Global Grade - C At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's...

easyJet is seeking a Lead Software Engineer to combine hands-on coding with technical leadership. You'll design, build and operate production software in AWS, guiding a small squad of engineers while working closely with an Engineering Manager and Product Owner to align technical work with business priorities.You will lead delivery at the squad level, set...

Tesco is hiring an SDE3 in London to join the Profile team, delivering scalable Java services with Spring Boot and a strong focus on reliability and security. You’ll lead medium to large features, ship end-to-end stories, and mentor engineers while owning key components.You’ll work with Azure and Terraform, promote CI/CD, and contribute to secure coding...

Wise is hiring a Senior Java Software Engineer II for Continuous Delivery. You will work on the platform that powers thousands of releases across services, primarily in Java and Go, extending Spinnaker and related integrations.This hands-on role lets you move from discovery to implementation, using deployment data and reliability metrics to steer...

Elsevier in London seeks a Senior Software Engineer-I to contribute to a team delivering high-quality software for author services, applying your technical expertise.You will collaborate with agile squads, implement software to meet business goals, fix complex issues, and help improve engineering practices. The role offers flexible working arrangements and...