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.