Old Mission Capital

At Old Mission Capital we approach every day with a single, simple goal: make something better.

Financial Services Chicago, Illinois 100-200 employees Private Corporation Founded in 2008


Old Mission is a privately held technology company that provides liquidity in financial markets. The firm is committed to building a business whose core values and strategic vision are aligned with the long-term interests of the many markets in which we trade. We focus our resources on building systems, models, and trading strategies that help market participants efficiently transfer risk.


While Old Mission hires team members with diverse backgrounds, most employees have studied engineering, mathematics, or a related quantitative discipline. Employees at Old Mission work in Trading, Engineering, or Operations, with generalists operating across groups. Most of our people are comfortable writing code. Everyone is enthusiastic about building, tinkering and getting their hands dirty working on hard problems.


Old Mission does not have clients, and does not seek capital from outside investors. Founded in 2008, we have grown in size and scope every year. We trade billions of dollars of securities every day, covering virtually every exchange-listed asset class.

Skills We're Looking For

C++ Python Apache Subversion (SVN) Git Mercurial Computer Science engineering APIs Concurrent Programming Linux Risk Management Software Development System Programming Bash CentOS GitHub Multithreaded Programming Linux Kernel C++11 GNU Compiler Collection (GCC) Developing Applications Buildbot Network Protocols C++14 Java Linux/Unix Perl Automated Testing Linux System Administration Version Control Systems Programming C Programming Language Software Development Engineer In Test (SDET) Shell

We have great benefits

Medical Insurance (fully paid for)
Dental Insurance (fully paid for)
Pretax Commuter Benefit
Flexible Spending Account
Fully stocked kitchen
Catered lunch every day
Tuition Reimbursement
Generous Vacation Policy