Senior Software Engineer - Post Trade

Old Mission; Chicago (IL); Hybrid; USD 200,000 - 250,000; Full time

Benefits offered by this job

Fully paid Medical, Dental, Vision, to

On-site meals, free breakfast and? at

Tuition Reimbursement

401(k) with employer match

Paid Vacation, Sick, and ParentalLeave

Commuter and Flexible Spending

In office M-F with 10 remote days per

Job summary

Old Mission, a global proprietary trading firm, is seeking a Senior Software Engineer in Chicago. You will help build reliable, low-latency post-trade systems and coordinate solutions across inputs, outputs, and latency requirements.

You will apply Python and C++ expertise to a distributed infrastructure that supports global trading, collaborating with teams in Chicago, New York, and London to drive performance and continuous improvement.

Qualifications

• Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline.
• 5+ years of professional Python and C++ experience in production.
• Strong Linux knowledge including performance tuning and networking.
• Experience with relational databases (PostgreSQL, MySQL, etc.).
• Experience with FIX (execution management, market data, drop copy).
• Excellent written and verbal communication; collaborative team player; strong problem-solving.

Responsibilities

• Build reliable systems at scale in a distributed post-trade environment.
• Coordinate solutions across inputs, outputs, and latency requirements.
• Collaborate with teams across offices to support global trading.
• Apply Python and C++ expertise to post-trade infrastructure.

Skills

Python & C++

Linux

Communication

Team leadership

Problem solving

Fast-paced environment

Education

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

Tools

PostgreSQL

MySQL

FIX protocol

Job description

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.