Java Developer Freelance jobs in London

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

We’re looking for a Java Full Stack Developer (Senior/Lead level) with strong experience in Java 8+, Spring Boot, Microservices, and CI/CD (Docker/Kubernetes) . 📍 Location: Hybrid – 2 days/week in Reading or Croydon 💼 Type: Permanent 💰 Salary: Up to £70K + 10% bonus 🔐 Requirement: SC Eligible Th

We are hiring for one of our clients Java Developer – Payments Engineering Experience Multiple roles across: 7-10 years and 10+ years (Senior level) Role Summary We are looking for an experienced Java Developer with strong exposure to the Payments domain to design, build, and enhance applications su

Location: UK (Hybrid / Onsite as required) Experience: 5 years Role Type: Fixed Term Contract Overview We are developing a scalable Data Fabric platform that ingests, transforms, and serves trusted data products across multiple domains. The platform spans on‑premise and cloud environments and underp

Contract Java Developer (Finance) – Remote (London) – £500/day Outside IR35 – 6 Months We’re looking for an experienced Java Developer to join a fast-paced financial services organisation on an initial 6-month contract . This is a fully remote role (UK-based, London engagement) offering £500 per day

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

Job Description Java Developer – Prime Brokerage ______________________________________________________________________ Location: London, UK Type: Full-time /Hybrid (3 days per week) Department: Technology _______________________________________________________________________ Summary eClerx Markets

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

Senior Java Developer | £85,000 - £95,000 We're working with a leading financial services technology vendor on this exciting opportunity. Are you ready to spearhead a flagship platform rebuild at the heart of London’s fintech scene? This is your chance to architect and deliver high-performance, auto

eFinancialCareers

Senior Java Backend Developer (Contract) Location: London (Hybrid) Rate: £650 - 700 per day (likely inside IR35) A leading global financial institution is seeking a Senior Java Backend Developer to join a high-performing engineering team, delivering scalable, data-intensive backend systems that supp

Java Multithreading Developer – Trading/Risk Platforms Type: Contract /Permanent role Location : London, UK (Hybrid) We’re hiring an experienced Java Developer to work on backend systems supporting trading, risk calculations, and reporting in a capital markets environment. Key Skills: Core Java (8/1

🌍 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 expert

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

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

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

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

FDM Group

About The Role FDM is a global business and technology consultancy seeking a Java / Scala Developer to work for our client within the Investment Banking / Financial Services sector. This is initially a 12-month contract with the potential to extend and will be a hybrid role that will be based in Lon

About Us:- Net2Source Inc. is one of the fastest growing diversity certified global workforce solutions companies with an unprecedented YoY growth of over 100% for last 6 years working with Fortune 1000/Global 2000 across 34 countries and 5 continents including North America, South America, Europe,

Harvey Nash

£8,400 - £9,600 /year

Senior Java Developer - Multithreading/caching - sought by leading investment bank based in London - Contract *inside IR35 - umbrella* Key Responsibilities Develop and maintain high-performance backend services for complex data processing workloads. Design scalable architectures for large-volume cal

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma