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:
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Matching engines
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Order books
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Market data processing
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Exchange connectivity
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Order routing
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Trading gateways
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Other performance-sensitive backend trading systems
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Experience within trading firms, banks, or exchanges
Required Skills & Experience
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Strong expertise in Core Java
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Recent hands-on experience with low-latency or ultra-low-latency electronic trading
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Strong understanding of market data, order books, and trading logic
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Excellent knowledge of multithreading and concurrency
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Experience with TCP/UDP networking
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Strong Linux experience
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Proven experience with production performance and latency troubleshooting
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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.