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 Software Engineer with a passion for building reliable systems at scale. As a post-trade developer, you will coordinate solutions across a wide range of inputs, outputs, and latency requirements. You will bring proven expertise in Python and C++ to a distributed system that supports global trading across the entire firm.  Required Skills - Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline - A minimum of 5 years of professional Python and C++ experience in a production setting - Strong Linux knowledge (e.g. performance tuning, networking) - Comfortable working with relational databases (e.g. PostgreSQL,MySQL, etc.) - FIX experience (e.g. execution management, market data, drop copy) - 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.