Senior Software Engineer - Low Latency Trading / Core Java

Job Summary

We are seeking a Senior Core Java Engineer with recent, hands-on experience developing low- or ultra-low-latency electronic trading systems. The ideal candidate will have a strong understanding of actual trading workflows and experience building performance-sensitive backend systems.

Location: Chicago, IL - Hybrid (2 days onsite required)
Type: Long-term Contract

Preferred Background

Candidates with experience in the following areas are highly preferred:

• Matching engines
• Order books
• Market data processing
• Exchange connectivity
• Order routing
• Trading gateways
• Other performance-sensitive backend trading systems
• Experience within trading firms, banks, or exchanges

Required Skills & Experience

• Strong expertise in Core Java
• Recent hands-on experience with low-latency or ultra-low-latency electronic trading
• Strong understanding of market data, order books, and trading logic
• Excellent knowledge of multithreading and concurrency
• Experience with TCP/UDP networking
• Strong Linux experience
• Proven experience with production performance and latency troubleshooting
• Experience developing performance-sensitive backend trading systems

Important Candidate Requirements

Candidates must have actual low-latency trading development experience. Financial-services experience alone is not sufficient.