Who can apply?
- The Software Engineer – 2027 Internship Program (June Start) posting asks for a bachelor's or master's in computer science, a graduation date of December 2027 or May 2028, and at least junior standing.
- Applicants should be comfortable with one or more of C++, Python or TypeScript and have a solid grasp of data structures, algorithms and systems.
- Interns must be able to start on June 1, 2027.
The start date is fixed at June 1, 2027, which rules out students whose spring term runs into June.
Dates, pay & program timing
The internship is in Chicago. The posting states a salary range of $150,000 to $200,000 based on skills, experience and education; for an internship this is an annualized rate. Old Mission also lists a Quantitative Trader 2027 Micro-Internship Program starting in January, posted separately. No deadline is given.
View the deadline calendarThese details reflect the sources at the review date. An overview is not a live job offer. Check the official page for today's application status and the selected opening's written terms.
How to apply to Old Mission
- Confirm you have junior standing and will graduate in December 2027 or May 2028.
- Check that you can start in Chicago on June 1, 2027.
- Apply through Old Mission's careers page with a resume that shows C++, Python or TypeScript projects.
You leave FirstInternships to apply. We do not accept applications, offer referrals, or represent the employer.
Our editorial advice · not employer requirements
How to prepare a stronger application
The posting asks for fundamentals across data structures, algorithms and systems. Pick one project where you made a design trade-off — memory against speed, simplicity against flexibility — and be ready to explain why you chose it.
Trading firms value code that is correct under pressure. Show testing habits: unit tests you wrote, a bug you caught before it shipped, or a tool you built to check results. This is our suggestion, not Old Mission's stated process.
Your preparation, on this device
Make it a plan.
Checking an item saves this program. These are planning prompts, not a substitute for the employer's full requirements.
Add a stage & next actionOfficial sources & update notes
We reviewed these publisher pages on . They establish the program facts above; our preparation suggestions are independent editorial guidance.
We do not infer deadlines, remote eligibility, or guaranteed offers from older recruiting cycles. Read our editorial process.