Senior Python Software Engineer

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.

Old Mission does not seek capital from outside investors, allowing us the flexibility to aggressively invest in our team members and keep them engaged in the firm's growth.

About the Position

We are on the lookout for Software Engineers who excel in Python. As a Software Engineer, you'll play a pivotal role on your team, taking ownership of cutting-edge projects. Your primary responsibilities will encompass the refinement and advancement of our trading systems and mission-critical applications. Additionally, you'll collaborate closely with quants, traders, and research teams to bolster our systems' adaptability and scalability, all while contributing to the development of innovative trading applications.

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 (e.g. PostgreSQL, MySQL, etc.)
• 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


$150,000 - $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.