Low-Latency C++ Engineer for Quant Trading

Phaxis; Chicago (IL); On-site; USD 150,000 - 210,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k) with company match

Unlimited PTO

Job summary

Phaxis is seeking an experienced C++ Engineer for a proprietary trading firm in Chicago. You will join a technology team building automated, scalable trading systems and ultra-low latency infrastructure supporting trading strategies and execution.

You will work closely with traders and engineers to optimize performance, translate trading ideas into production code, and push for continuous improvements in latency, throughput, and reliability.

Qualifications

• 5+ years in an options market-making or electronic trading firm.
• Advanced proficiency in modern C++.
• Strong knowledge of Linux and system-level programming.

Responsibilities

• Design, develop, and optimize low-latency C++ applications supporting electronic trading strategies.
• Partner with traders and engineers to turn ideas into production-ready systems.
• Analyze system performance to identify bottlenecks and prioritize improvements.
• Enhance interactions between applications and system components in a controlled environment.
• Migrate and rewrite complex Java applications into C++.
• Optimize production systems for latency, throughput, reliability, and scalability.
• Debug and profile performance-critical applications in a Linux environment.

Skills

C++

Linux

Data structures

Concurrency

Performance optimization

Tools

Profiling tools

Job description

Phaxis is seeking an experienced C++ Engineer for a proprietary trading firm in Chicago. You will join a technology team building automated, scalable trading systems and ultra-low latency infrastructure supporting trading strategies and execution.

You will work closely with traders and engineers to optimize performance, translate trading ideas into production code, and push for continuous improvements in latency, throughput, and reliability.