Companies Simplex Trading

Simplex Trading

Chicago

120 Total Employees

Year Founded: 2004

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Engineering 3 Finance 1

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What's It Like to Work at Simplex Trading in Chicago?

Updated on September 09, 2026

What's it like to work at Simplex Trading?

The Chicago office is characterized by an in‑person, collaborative setup that pairs high autonomy with strong day‑to‑day support and comprehensive benefits. Together, these dynamics suggest the Chicago location offers a high‑impact environment with practical perks and a collegial culture that enables fast iteration alongside traders and engineers.

Key Insight for Candidates

Simplex’s Chicago office is intentionally in‑person and co‑located, pairing traders and engineers to iterate quickly on low‑latency systems. This shoulder‑to‑shoulder model, backed by strong tooling and hands‑on leadership, lets employees ship fast and see clear, immediate impact.

Evidence in Action

Tight Trader–Engineer Collaboration — Traders and developers work closely on latency‑sensitive systems and pricing/risk models. This tight loop reduces bureaucracy, helps teams ship quickly, and lets Chicago team members see direct P&L impact.
Daily Meal Stipends — Daily breakfast/lunch stipends, a stocked kitchen, and frequent social events support an in‑office culture in Chicago’s Loop (Federal Reserve building). These routines encourage face‑to‑face collaboration and make onsite days convenient and community‑building.

Positive Themes About Simplex Trading

Benefits & Perks: The Chicago HQ offers in‑office perks such as meal stipends, a stocked kitchen, and access to the Federal Reserve building’s gym, alongside free employee medical coverage, a 401(k) match, generous parental leave, and tuition/charity programs. These benefits are prominently featured in local job materials and company pages tied to the downtown Chicago location.
Autonomy: In the Chicago office, employees are given high ownership with minimal bureaucracy, working directly across trading and engineering to ship changes quickly and see tangible impact. The in‑person setup supports rapid decision‑making and hands‑on problem solving.
Team Support: Colleagues in Chicago are often seen as smart, humble, and collaborative, with an open floor plan and regular in‑person interaction that fosters tight trader‑technologist partnership. Mentorship and open‑door access are described as cultural norms at the headquarters.