Senior C++ Engineer - Low-Latency Options Market Making

Fionics; Chicago (IL); On-site; USD 140,000 - 210,000; Full time

Job summary

Fionics in Chicago, IL is seeking a Senior C++ Software Developer to design and optimize low-latency systems powering automated options market making. You will work directly with traders and engineers to move ideas from concept to production.

The role requires 5+ years in an options market making firm, strong modern C++ and Linux programming, and deep CS fundamentals. Expect hands-on debugging, profiling, and performance tuning in a fast-paced environment.

Qualifications

• 5+ years at an options market making firm.
• Strong modern C++ and Linux system programming.
• Solid CS fundamentals — data structures, algorithms, concurrency.
• Excellent debugging, profiling, and performance tuning.

Responsibilities

• Design and optimize low-latency C++ systems for automated options market making.
• Collaborate with traders and engineers to move ideas from concept to production.
• Rewrite legacy Java into C++ and tune for throughput.
• Perform diagnostic analysis to maximize system throughput.

Skills

C++

Linux

Concurrency

Performance tuning

Debugging

Profiling

Tools

Low-latency systems

Profiling tools

Java migration

Job description

Fionics in Chicago, IL is seeking a Senior C++ Software Developer to design and optimize low-latency systems powering automated options market making. You will work directly with traders and engineers to move ideas from concept to production.

The role requires 5+ years in an options market making firm, strong modern C++ and Linux programming, and deep CS fundamentals. Expect hands-on debugging, profiling, and performance tuning in a fast-paced environment.