Java Developer Freelance jobs in Chelsea

About FairPlay SportsMedia We’re a sports media network, focused on building and nurturing a portfolio of highly engaged and connected communities of sports fans and bettors to create value for our partners. We empower sports fans with real-time intelligence, premium independent content, and unique

Michael Page Technology

£9,000 - £12,000 /year

This is an exciting opportunity for a Senior UI React / Java Developer to contribute to innovative projects in the Financial Services industry. The role is based in London and focuses on delivering high-quality solutions within a collaborative technology department. Client Details The client is a le

At Transatel, we imagine innovative cellular connectivity solutions and deploy them around the world for prestigious clients like Airbus, Stellantis, Worldline and Jaguar Land Rover. As a leading Mobile Virtual Network Operators enabler and global IoT connectivity pioneers, our SIM & eSIM connec

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

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

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

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

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

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

Join Barclays as a Java Software Developer, responsible for designing and developing systems that generate pricing quotes, automating spreadsheet-driven workflows, and building client automation solutions. In this role, you will collaborate with the existing engineering team to enhance and maintain

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 seeking a Java Developer to join our FIF team. In this role you will assist in development and delivery of software solutions while collaborating with peers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives. To

McGregor Boyall

£7,200 - £8,400 /year

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

We are looking for a Java Developer with experience in capital markets and risk systems , working on backend services, APIs and data processing components supporting trading, risk calculations and reporting. Key Responsibilities Develop and enhance Java-based backend applications for trading and ris

Searchability NS&D

£80,000 - £95,000 /year

Lead Full Stack Java Developer - SC Cleared NEW PERMANENT OPPORTUNITY FOR A LEAD FULL-STACK JAVA DEVELOPER IN LONDON WITH SC CLEARANCE Location: London (Hybrid) Salary: £80,000 - £95,000 per annum Clearance: Active SC Clearance required To apply: email The Company Join a specialist technology consul

Reed

Senior Java Engineer Payments Location: London two days per week Contract Length: Minimum twelve months Pay: £525 - £625 per day An experienced Senior Java Engineer is required to support the delivery of large-scale enterprise payments platforms within a modern cloud-based architecture. This is a ha

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 under

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Abou