Trading Systems Intern: C++/Python for Real-World Impact

Old Mission; Chicago (IL); On-site; USD 150,000 - 200,000; Full time

Benefits offered by this job

Free breakfast and lunch on-site

Corporate housing at no cost

Access to traders, researchers, and/​r

Job summary

Old Mission’s Chicago office invites dedicated students to join our internship program, where you’ll work alongside software engineers on C++ based trading applications and tools. You’ll contribute to real projects that support the firm’s day-to-day trading activities and gain hands-on exposure to how technology drives our market initiatives.

You’ll collaborate with engineers, traders, and cross-functional teams, receive frequent feedback, and learn through practical, impactful assignments this

Qualifications

• Currently pursuing a bachelor's or master's in Computer Science, Computer Engineering, or a similar technical field.
• Minimum 3.0 GPA.
• A strong work ethic and ability to adapt quickly in a fast-paced environment.
• At least junior standing, with a graduation date of December 2027 or May 2028.
• Comfortable with one or more of C++, Python or TypeScript.
• A solid grasp of computer science fundamentals: data structures, algorithms, systems.
• Genuine interest in markets and how software supports them.
• Ability to start the internship on June 1, 2027.
• No finance experience is required.

Responsibilities

• Gain exposure to how trading works, from the underlying theory to the systems and tools we build around it
• Regular sessions with senior engineers covering the fundamentals of the systems and tools we use
• Get direct feedback from the engineers you're working alongside, learning in real time
• Work directly with engineers, traders, and other teams on projects that matter to the firm day to day

Job description

Old Mission’s Chicago office invites dedicated students to join our internship program, where you’ll work alongside software engineers on C++ based trading applications and tools. You’ll contribute to real projects that support the firm’s day-to-day trading activities and gain hands-on exposure to how technology drives our market initiatives.

You’ll collaborate with engineers, traders, and cross-functional teams, receive frequent feedback, and learn through practical, impactful assignments this