senior software engineer- java jobs in London

A leading software development company in London is seeking a Senior Java/Kotlin Engineer to join their high-impact product engineering team. In this hybrid role, you will design scalable backend services and influence technical direction. Ideal candidates will have extensive experience with Java/Kotlin, AWS, and distributed systems. You will benefit from a...

JPMorgan Chase & Co. in London seeks agile technologists to join the Global Liquidity Technology team and revolutionize how technology supports the Global Liquidity business, managing large asset flows and delivering high‑scale, low‑latency systems used by traders and portfolio managers.The role requires strong Java expertise (17+), TDD/BDD, and...

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...

A leading payments consultancy in London is seeking a Principal Software Engineer to design scalable, high-availability systems. You will work with Java 17+, Spring WebFlux, and Kafka in a hybrid environment, contributing to real-time transaction solutions for major global banks. Ideal candidates have strong experience in reactive programming and an agile...

Adaptive, a technology provider for capital markets, seeks a Senior Java / Systems Engineer with Platform Exchange experience to design, deliver, and optimise high-performance, low-latency software using Aeron for production readiness.You will design, build and optimise Java services across the delivery lifecycle, define models and exchange boundaries, and...

IG, a FTSE100 fintech, seeks a Senior Software Engineer to push AI across Lifecycle engineering with a primary focus on the Java backend. You will build tooling for AI-assisted coding, testing and deployments and integrate with Jira, Confluence, and the CI/CD pipeline.The role emphasizes test-driven development, ownership from design to production, and...

A leading technology firm is seeking a Senior Java Engineer in London to lead the development of core product features for a travel app. Candidates should have over 5 years of experience and strong programming and API design skills. The role requires a proactive approach to problem-solving and excellent communication to collaborate with various stakeholders....

Wise is looking for an experienced AML Engineer to shape how we detect money laundering and terrorist financing risk. You will own large projects and their roadmaps, collaborating with engineers, data scientists, and AML experts to deliver scalable detection controls.You will mentor engineers, drive reliability and security, and align product decisions with...

HCL Technologies Limited is seeking a senior engineer to own end-to-end, complex distributed systems—from UI through databases and data pipelines. You will design, build, and operate cloud-native microservices in Java 17/21 with Spring Boot, exposing well-versioned APIs and consuming front-ends in TypeScript.This hands-on role requires daily coding, PR...

Avanti Recruitment Limited is seeking a Senior Java Fullstack Engineer to join a renowned software company in Central London. The role is hybrid, with 2 days in the office weekly, and a salary up to £75,000 depending on experience.You will design, develop and enhance enterprise scale software, working across backend Java/Spring Boot and frontend...

Hunter Bond is seeking a Senior Java Developer for a hybrid Central London role with an initial 12-month contract. The position offers an outside IR35 setup and a day rate up to £700, starting in October.You will develop and enhance server-side Java applications supporting settlement and post-trade processes within a fast-paced financial markets...

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...

J.P. Morgan is seeking a Senior Lead Software Engineer to join the Platform team in London. You will be a hands-on backend engineer focusing on a Spring Boot based framework and libraries that support Investments' product engineering teams.You will bring deep Java expertise, work with SDLC and Infrastructure teams, and drive standardisation and best...

A leading financial institution in London is seeking a Senior Java Developer for a 10-month onsite contract. The role involves designing, building, and maintaining Java-based backend systems, with a focus on cloud-native and microservices architectures. The ideal candidate has hands-on experience with Java, cloud technologies, and mentoring skills....

Oliver Bernard is seeking a Senior Java Developer to join a high-performing engineering team delivering a major financial services project in London.This is a hands-on role focused on clean, maintainable code, automated testing and continuous delivery in an Agile environment. You’ll work alongside experienced engineers, architects and product specialists...

Wise Platform is seeking an API Experience Engineer to join the API Experience Team in a hybrid London-based role. You will design, build, and lead scalable public APIs with Java, Spring Boot, Kafka, and PostgreSQL, shaping developer experience for global partners.The role emphasizes API standards (REST, OpenAPI/Swagger, OAuth2), mentorship, cross-functional...

Grid Dynamics is seeking an experienced Java/Kotlin Engineer to join the core engineering team delivering a major, multi-year strategic risk system replatforming programme. You will work at the heart of the programme, building key components within a highly scalable, risk-tolerant architecture designed to handle very large volumes of data in a demanding...

Stanford Black Limited seeks experienced engineers to develop sophisticated systematic trading systems at their London office. You will own the end-to-end lifecycle of execution workflows, build high-performance systems, and collaborate with researchers to enhance trading algorithms.The ideal candidate has 5-10 years of Java experience, knowledge of FIX...

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...

Vertus Partners in London is seeking a hands-on Java Software Engineer to own design and delivery of distributed backend services in a banking environment. You will work on microservices, cloud deployments (AWS), and architecture decisions while writing production-grade Java and keeping systems scalable, resilient, and observable.The role offers a flexible...