Java/Spring Boot Engineer – Low Latency Trading (Contract) - New York City (2 days per week onsite, downtown NY) - 6 months initially (C2C - no third-party), starting October

Role Summary

We are seeking two highly skilled Java/Spring Boot Engineers with strong low-latency build experience to join a front-office FX trading technology team. This role involves designing and developing high-performance trading systems, optimising for speed and scalability, and working on complex problems spanning system architecture, concurrency, and network communication. The successful candidates will be hands-on engineers with proven expertise in building, not just maintaining, mission-critical trading platforms.

Key Responsibilities

• Design, develop, and optimise low-latency trading applications using Java and Spring Boot
• Write clean, efficient, and testable code with a focus on performance and scalability
• Apply deep knowledge of data structures, algorithms, concurrency, and memory management
• Utilise profiling tools to diagnose performance bottlenecks and optimise system throughput
• Work with specialised frameworks and libraries for low-latency application development
• Implement and optimise communication across TCP, UDP, and HTTP protocols
• Collaborate with globally distributed teams, including BAs, QAs, and traders, to deliver end-to-end solutions
• Contribute to Agile delivery practices, including DevOps and automation of testing, CI/CD, and infrastructure changes
• Investigate complex technical issues spanning multiple systems and drive them to resolution

Skills & Experience

• Strong Java programming expertise with proven experience building enterprise-grade, low-latency systems
• Hands-on experience with Spring Boot for high-performance applications
• Deep knowledge of concurrency, performance optimisation, and system architecture
• Proficient with profiling and debugging tools for memory and performance tuning
• Experience with network protocols (TCP, UDP, HTTP) and techniques for optimising network communication
• Exposure to Agile methodologies, DevOps practices, and automation tools
• Track record of delivering high-quality solutions in trading or financial markets environments
• Self-motivated, able to manage multiple priorities, and effective in distributed, cross-functional teams