Java Developer Java Developer jobs in London

Vallum Associates

Role: Backend Developer (Core Java) We are seeking an experienced Backend Developer with strong expertise in Core Java to build scalable, high-performance APIs and work effectively within large, complex codebases. The ideal candidate will have a solid foundation in system architecture and will colla

Synnovate

A dynamic software company in the United Kingdom is seeking a Mid-Level Java Developer to join their growing team. The successful candidate will design, develop, and maintain Java applications, contributing throughout the software development lifecycle. Candidates should have at least 3 years of exp

Experis - ManpowerGroup

A leading recruitment agency is seeking an experienced Java Developer for a 12-month remote contract. Successful candidates will possess strong backend development skills, particularly in Java and Spring Boot, and ideally hold an Active SC Clearance within the public sector. Additional knowledge in

MARGO

A leading financial services company in the UK is seeking a Rapid Application Developer skilled in Java and JavaScript. This role focuses on fast-paced application development directly impacting the trading desk, requiring close interaction with traders. Candidates should possess 0–3 years of experi

Understanding Recruitment

Do you have 3-5 years experience and are looking for your next challenge? Have you been developing with Core Java without the use of frameworks? Mid Java Developer – Leading FinTech Location – hybrid in London 3 days a week Salary – up to £90k + bonus We are working with our long-term partners on th

Methods Business and Digital Technology Ltd

3rd Line Back End DeveloperMethods Business and Digital Technology Limited Responsibilities Investigate, diagnose, and resolve live system defects and production incidents in line with SLAs. Analyse logs, metrics, and traces to identify root causes of complex technical issues. Design, develop, and d

Understanding Recruitment

A leading FinTech company in the UK is seeking a Mid Java Developer with 3-5 years of experience to join their expanding team. You'll be developing software using Core Java without frameworks, enjoy flexible working, and receive a salary up to £90k plus bonuses. Ideal candidates have an interest in

EEZE

Role Overview We are seeking a Senior Java Developer to join our Core Platform Team. This role is critical to building and maintaining the scalable backend infrastructure of our Live Casino platform, ensuring it can support high-concurrency gameplay, real-time interactions, and a distributed microse

BIPB

About Keyrus Keyrus is a global consulting and technology company focused on making data matter — truly matter — from a human perspective . Founded in 1996, Keyrus operates in 28+ countries across 5 continents , with more than 3,300 people worldwide . Our strength comes from combining deep expertise

Senior Java Fullstack Developer - VP level - Investment Technology / Finance An industry leading global financial and technology organisation are looking for Senior Java Software Engineers with 7+ years’ experience, who have some experience in React or similar, plus modern JavaScript/TypeScript, who

McGregor Boyall

£160,000 - £190,000 /year

London | Hybrid (3 days onsite) Top-tier Investment Bank (Global Markets) £160k-£100k base bonus benefits Build the engine behind a $trillions-per-day market This isn't another backend Java role. This is about sitting on the critical path of FX pricing , where microseconds matter, decisions are real

eFinancialCareers

London | Hybrid (3 days onsite) Top-tier Investment Bank (Global Markets) £160k-£100k base bonus benefits Build the engine behind a $trillions-per-day market This isn't another backend Java role. This is about sitting on the critical path of FX pricing , where microseconds matter, decisions are real

CGI

This job is with CGI, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly.Java Developer Position DescriptionAs a Java Developer at CGI, you'll design and deliver high-quality software solutions t

Albany Beck

We are seeking a Java Developer with strong Front Office Foreign Exchange (FX) technology experience to join a major strategic modernisation programme. The programme is focused on migrating a large-scale, business-critical FX trading platform from a legacy C++ architecture to a modern Java-based pla

Vallum Associates

Backend Developer — Java We are looking for an experienced Backend Developer with strong Java skills to build and maintain scalable, high-performance backend services and APIs for a large microservices-based trading platform. Key Responsibilities Develop and maintain backend services and APIs using

Vallum Associates

Backend Developer — Java We are looking for an experienced Backend Developer with strong Java skills to build and maintain scalable, high-performance backend services and APIs for a large microservices-based trading platform. Key Responsibilities Develop and maintain backend services and APIs using

McGregor Boyall

£160,000 - £190,000 /year

London | Hybrid (3 days onsite) Top-tier Investment Bank (Global Markets) £160k-£100k base bonus benefits Build the engine behind a $trillions-per-day market This isn't another backend Java role. This is about sitting on the critical path of FX pricing, where microseconds matter, decisions are real-

Eeze

Role Overview: We are seeking a Senior Java Developer to join our Core Platform Team. This role is critical to building and maintaining the scalable backend infrastructure of our Live Casino platform, ensuring it can support high-concurrency gameplay, real-time interactions, and a distributed micros

Cathcart Technology

Senior Java Engineer Modern Stack TDD & CI/CD Complex SystemsRemote First (office visit once a month) - you must live within 1hr 30 of South Manchester60,000 - 70,000 + Bonus + Excellent Benefitsmy client is not able to provide sponsorshipWe're working with a long-established tech company who ar

Hays Technology

€30,000 - €60,000 /year

Requirements Must have: - 10+ years server side Java development experience. - Strong commercial software development experience in financial services, ideally investment banking. - Strong experience with CI/CD pipelines. - Strong experience with Oracle. - Strong experience with Linux/Unix. - Strong