Senior C++ Software Engineer

Fionics

Chicago (IL)

On-site

USD 140,000 - 210,000

Full time

2 days ago

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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

Senior C++ Software Developer — Options Market Making

Chicago, IL | Full-time | On-site

Hiring for a fast-growing electronic options market maker in Chicago. Small team, flat structure, real ownership from day one.

The Role

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.

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