Senior Quantitative Developer — Trading Systems & Analytics

Group One Trading seeks a Senior Quantitative Developer to join its options market-making team in Chicago or New York. You will design, implement, and optimize pricing, risk, and execution systems, collaborating closely with traders and quantitative researchers to deliver robust, high-performance solutions.

You will own meaningful components, lead technical discussions, and mentor peers, emphasizing C++ and C# in a fast-paced, production environment.