HFT C++ Engineer

Fionics; Mundelein (IL); On-site; USD 150,000 - 210,000; Full time

Job summary

Fionics, a New York-based proprietary HFT firm, seeks a C++ engineer with 3+ years in low-latency systems at a live trading shop. You’ll work on execution engines, market data infrastructure, and full-stack performance improvements with production deployment in days, not quarters.

Expect on-site collaboration with trading, research, and engineering in the same room, and ownership from day one in a small, highly competitive team.

Qualifications

• 3+ years of experience in low-latency systems at a live HFT or quant shop.

Responsibilities

• Develop and optimize execution engines and market data infrastructure.
• Provide full-stack performance engineering on live trading systems.

Skills

C++

Low-latency

Production-ready code

Job description

Job Description

For C++ engineers with 3+ years in low-latency systems at a live HFT or quant shop.

If you're a strong engineer at a big firm, you probably know the pattern:

– Inherited systems you can't fundamentally change.

– Three layers between your code and production.

– A queue of approvals before you can ship.

– Comp tied to politics, not output.

This isn't that.

The firm

A proprietary HFT firm in New York. ~40 people. Profitable for over a decade. Built quietly, on purpose. Everything in-house. PnL per person well above industry norm and still growing.

The work

Execution engines, market data infrastructure, full-stack performance engineering on systems that trade live. Trading, research, and engineering in the same room. Your code in production in days, not quarters.

You’ll get

Real ownership from day one. A small team with a high bar. Comp highly competitive at every level.

New York. On-site.