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 This Role
Old Mission is a global proprietary trading firm that uses cutting-edge technology and research to identify and execute profitable trading strategies across asset classes worldwide, with offices in Chicago, New York, and London.
This 2027 summer internship gives a law student real junior-attorney-level work inside a financial services legal department. You'll work alongside experienced counsel on active matters, get regular feedback, and gain hands-on exposure to the corporate, commercial, and regulatory issues facing a prop trading firm regulated by the SEC, FINRA, CFTC, and FCA.
What You'll Do
What We're Looking For
Nice to Have
Pay Range
$30–$35/hr., depending on experience, skills, and qualifications relative to role requirements. This position is classified as non-exempt and is eligible for overtime pay in accordance with the Fair Labor Standards Act and Illinois state wage and hour law.
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.

Old Mission is a global, multi-asset market maker. We specialize in valuing individual securities and complicated derivatives at the speed of modern markets. Our advanced market-making platform allows us to collaborate seamlessly with the world’s largest exchanges, brokers, and institutional investors, providing them with a trusted partner for efficient risk transfer across a diverse range of securities worldwide.