Senior Quantitative Developer
Group One Trading•Chicago, IL
•Onsite
About The Position
Our Senior Quantitative Developers work directly with traders and quantitative researchers to build and improve the pricing, strategy, risk, and execution systems that power our options market-making business. They combine academic ideas with a pragmatic understanding of trader approach and intuition, to deliver critical systems from initial design through deployment and shape the strategic direction of the firm.
Requirements
- Strong quantitative and analytical skills, including familiarity with probability, statistics, numerical methods, and the evaluation of model or strategy behavior.
- Knowledge of options pricing models, implied volatility surfaces, risk measurements, and market microstructure.
- Demonstrated ability to work directly with traders and quantitative researchers.
- Substantial professional software development experience throughout the full software development lifecycle, including requirements analysis, architecture, implementation, testing, deployment, monitoring, and production support.
- Ability to lead technical design discussions, make pragmatic architectural decisions, mentor other developers, and improve engineering standards across the team.
- Strong written and verbal communication skills, including the ability to explain complex technical and quantitative concepts.
- A bachelor's degree in computer science, engineering, mathematics, statistics, or related quantitative fields, or equivalent practical experience.
- Comfortable discussing a strategy with a trader, analyzing unexpected model behavior, and diagnosing a production performance issue.
- Takes ownership of systems after they are deployed.
- Ability to raise the technical standard of a team while continuing to write and deliver high-quality code.
- Ability to study for and pass the FINRA Series 57 exam.
Nice To Haves
- Heavily-optimized C# production environment.
- C++ integrated into especially performance-sensitive components.
- Embrace agentic AI workflows as a valuable asset to our engineering approach.
Responsibilities
- Build and improve pricing, strategy, risk, and execution systems.
- Deliver critical systems from initial design through deployment.
- Shape the strategic direction of the firm.
- Take end-to-end ownership of system enhancements.
- Coordinate deployment of changes with appropriate monitoring and controls.
- Participate effectively in production support.
- Identify opportunities to improve system performance and maintainability.
- Lead complex projects from initial concept through production operation.
- Make informed architectural and performance tradeoffs.
- Deliver measurable improvements in trading capability, computational performance, or research productivity.
- Proactively address technical debt and operational risk.
- Improve testing and observability.
- Mentor other developers.
- Help establish engineering practices that allow the team to move quickly without compromising correctness.
- Contribute to the identification and evaluation of new technical and quantitative opportunities.
Benefits
- Competitive salary
- Performance-based bonus
- 401(k) and Roth 401(k) retirement plans with employer matching
- Medical insurance
- Dental insurance
- Vision insurance
- Generous vacation time
- Paid holidays
- Parental leave
- Flexible spending accounts (FSA) for health care, dependent daycare, and parking or mass transit expenses.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
