Java Swing Developer

Caspian One; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

A financial technology firm in Greater London is seeking a Java Swing Developer to enhance its high-performance desktop trading platform. This role includes maintaining a Java Swing-based UI and transitioning the architecture to microservices. The ideal candidate will have strong Core Java skills, experience with multithreaded architectures, and familiarity with microservices concepts. This position offers the chance to work on complex, mission-critical systems and influence the next generation of their technology stack.

Qualifications

• Proficient in Core Java with understanding of design patterns.
• Experience with multithreaded architectures and performance optimization.
• Practical knowledge of Java Swing.
• Familiarity with microservices concepts and willingness to transition into modern architecture.

Responsibilities

• Enhance and maintain a Java Swing-based UI for trading and risk management.
• Work on a multithreaded architecture communicating with backend via bespoke TCP.
• Collaborate on plans to decouple UI and introduce microservices.

Skills

Strong Core Java skills

Multithreaded architecture experience

Java Swing experience

Familiarity with microservices

Performance optimization

Job description

We’re looking for a Java Swing Developer to join a team working on a high-performance desktop trading platform. Working on a mission-critical system that supports FX Cash, deposits, futures, swaps, and more. The platform is rich in functionality, handles heavy loads with low latency, and underpins key trading and sales workflows.

You’ll help maintain and evolve the current Java Swing UI, while preparing for a future transition to a modern microservices-based architecture. This role offers exposure to complex, real-time systems and the chance to influence the next generation of our technology stack.

What You’ll Do

• Enhance and maintain a Java Swing-based UI for trading and risk management.
• Work on a multithreaded, high-memory architecture communicating with backend via bespoke TCP.
• Collaborate on plans to decouple UI and introduce microservices.

What We’re Looking For

• Strong Core Java skills and solid understanding of design patterns.
• Ability to work with multithreaded architectures and optimise performance.
• Java Swing experience
• Familiarity with microservices concepts and willingness to transition into modern architecture.

Nice to Have

• Knowledge of FX, fixed income, and derivatives products.
• Experience with OMS, algo trading, and FIX protocols.