Low-Latency C++ Engineer — Options Market Making

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

Benefits offered by this job

Direct access to founders

In-house low-latency systems

Job summary

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

The role requires strong modern C++ and Linux systems programming, plus deep CS fundamentals and a track record in debugging and performance tuning. This on-site position offers ownership from day one.

Qualifications

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

Responsibilities

• Design and optimize low-latency C++ systems powering automated options market making.
• Work directly with traders and engineers to take ideas from concept to production.
• Includes rewriting legacy Java into C++, diagnostic analysis, and tuning for maximum throughput.

Skills

C++

Linux system programming

Data structures & algorithms

Concurrency

Performance tuning

Job description

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

The role requires strong modern C++ and Linux systems programming, plus deep CS fundamentals and a track record in debugging and performance tuning. This on-site position offers ownership from day one.