Real-Time Java Developer - Front Office Trading Systems

Margoconsulting; Greater London; On-site; GBP 70,000 - 105,000; Full time

Job summary

MARGO is recruiting a Java Developer to join the Front Office / Trading IT environment in London. You will design, develop and maintain real-time, high-performance Java applications that handle market data, pricing and orders in a low-latency setting.

The role emphasizes technical excellence, real-time data processing and close collaboration with trading, quant and infrastructure teams. Prior Front Office, trading or risk experience is highly valued in a fast-paced, high-standards environment.

Qualifications

• Strong experience as a Java Developer in performance-critical environments.
• Proven background in low-latency or high-throughput systems.
• Solid understanding of concurrency, threading and memory management.
• Experience working in Front Office, Trading or Risk IT environments.
• Comfortable working in Linux production environments.
• Clear communication and structured problem-solving skills.

Responsibilities

• Design, develop and maintain high-performance Java applications.
• Work on real-time data processing (market data, pricing, orders, analytics).
• Implement multithreading and concurrency patterns adapted to performance-critical systems.
• Participate in system design, architecture discussions and technical specifications.
• Provide 3rd line support on production systems when required.

Skills

Java expert

Low-latency

Multithreading

Linux/Unix

Front Office exposure

Real-time data processing

Performance optimization

Trading/Risk IT

Kafka

Solace

FIX

Tools

Kafka

Solace

FIX

Job description

MARGO is recruiting a Java Developer to join the Front Office / Trading IT environment in London. You will design, develop and maintain real-time, high-performance Java applications that handle market data, pricing and orders in a low-latency setting.

The role emphasizes technical excellence, real-time data processing and close collaboration with trading, quant and infrastructure teams. Prior Front Office, trading or risk experience is highly valued in a fast-paced, high-standards environment.