Old Mission is a global proprietary trading firm that leverages state-of-the-art technology and research to identify and execute profitable trading strategies across multiple asset classes around the world. Our offices in Chicago, New York, and London are all composed of naturally-curious individuals who thrive in a team environment and constantly strive for improvement.

About the Position

We are actively hiring a Senior Python Software Engineer with a passion for building reliable systems at scale. This role involves developing and supporting execution platforms, real-time trader-facing applications integrated with our trading systems, large-scale data and research systems, and automation of trader workflows. You will bring proven expertise in Python to distributed systems supporting global trading across the firm.

Required Skills

Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline

A minimum of 5 years of professional Python experience in a production environment

High proficiency in Python on Linux Platforms

Familiarity with relational databases and/or enterprise messaging/object storage (Kafka, Ceph, Iceberg)

Exceptional written and verbal communication skills

A collaborative team player with a knack for owning and driving exciting projects

Thrives in a fast-paced work environment, showcasing effective problem-solving abilities

Benefits and Perks

Fully paid Medical, Dental, Vision, Disability, and Life Insurance

Fully stocked kitchen; free breakfast and lunch every day on-site

Tuition Reimbursement Program

401(k) with employer match

Paid Vacation, Sick, and Parental leaves

Commuter and Flexible Spending Programs

In office M-F with 10 remote days per year

Base Salary Range

$200,000 - $250,000 - Salaries are based on numerous factors such as skills, experience, and education. Our compensation package also includes a discretionary bonus and a comprehensive benefits program for full-time employees. For more information, reach out to your recruiter.

Old Mission is not accepting unsolicited resumes from any staffing/search firms. All resumes submitted by staffing/search firms to any employee at Old Mission via-email, the Internet or directly without a valid signed search agreement will be deemed the sole property of Old Mission, and no fee will be paid in the event the candidate is hired by Old Mission.