Jobs at Old Mission

About Old Mission

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.

Open roles at Old Mission

• Floor Trader - 2027 Graduate Program (August Start)

  Illinois · onsite · New Grad · full time

  Posted 16 Sep 2026

• Junior Trading Operations/DevOps Engineer

  Illinois · onsite · Junior · full time

  Posted 8 Sep 2026

• Fundamental Research Analyst - 2027 Graduate Program - (August Start)

  Illinois · onsite · New Grad · full time

  Posted 2 Sep 2026

• Senior Software Engineer - Post Trade

  Illinois · onsite · Senior · full time

  Posted 26 Aug 2026

• Associate Head of Trader Education

  Illinois · onsite · Principal · full time

  Posted 12 Aug 2026

• Legal Intern - Summer 2027

  Illinois · onsite · Internship · intern

  Posted 10 Aug 2026

• Quantitative Researcher (Ph.D.) - 2027 Graduate Program - (August Start)

  Illinois · onsite · New Grad · full time

  Posted 30 Jul 2026

• Software Engineer – 2027 Internship Program (June Start)

  Illinois · onsite · Internship · intern

  Posted 15 Jul 2026

• Software Engineer – 2027 Graduate Program (August Start)

  Illinois · onsite · New Grad · full time

  Posted 13 Jul 2026

• Quantitative Trader – 2027 Graduate Program (February Start)

  Illinois; New York · onsite · New Grad · full time

  Posted 13 Jul 2026

Old Mission hiring at a glance

Hiring across Engineering (4), Legal & Compliance (1), Science & Research (1).

By level: New Grad (5), Internship (2), Junior (1), Principal (1).

Most common locations: Illinois (10).

Counted from the roles listed above. Many postings do not list pay.