Senior Quantitative Developer

Job overview

The Senior Quantitative Developer role is listed in Chicago, IL or New York, NY, with a base salary range of $200,000–$275,000 per year plus an annual discretionary bonus. The posting identifies both cities as work locations. The developer supports Group One Trading’s options market-making business by building and improving its trading systems. The role works directly with traders and quantitative researchers to turn quantitative ideas and trading needs into production systems for pricing, strategy, risk, and execution. It also contributes to technical direction, system performance, production reliability, and engineering standards.

What you'll do

• Build and improve pricing, strategy, risk, and execution systems
• work with traders and quantitative researchers to refine problems and success criteria
• design, implement, test, deploy, monitor, and support production software
• lead technical design discussions and make architectural decisions
• validate changes in non-production environments
• coordinate deployments with monitoring and controls
• improve performance, maintainability, testing, and observability
• address technical debt and operational risk
• mentor developers and improve engineering practices
• study for and pass the FINRA Series 57 exam within the stated first three months.

What we're looking for

Skills & competencies

full-time

senior quantitative developer

chicago il

new york ny

group one trading

$200k–$275k base

options market making

c#

c++

pricing and risk systems

quantitative research

finra series 57

annual bonus

Work arrangement

• Weekend coverage required

Benefits & perks

• Annual discretionary performance-based bonus
• 401(k) and Roth 401(k) with employer matching
• medical, dental, vision, vacation, paid holidays, parental leave, and flexible spending accounts.

Why this role

Production environment primarily uses optimized C#, with C++ in performance-sensitive components; agentic AI workflows are valued. The role includes technical ownership and mentorship responsibilities.

About the employer

Group One Trading is hiring for this role. Industry: Investment Banking and Securities Intermediation. Sector: 52.