Summer 2027
Software Engineer Intern
June Start
Updated on 8/21/2026
Old Mission
51-200 employees
Global market maker for illiquid ETFs
Compensation Overview
$72.12 - $96.15/hr
Chicago, IL, USA
In Person
Bachelor's, Master's
 Software Engineering (1) |
|---|
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- Currently pursuing a bachelor's or master's degree in Computer Science, Computer Engineering, or a similar technical field.
- Have a minimum 3.0 GPA.
- Be at least a junior in standing and have a graduation date of December 2027 or May 2028.
- Be comfortable with one or more of C++, Python, or TypeScript.
- Have a solid grasp of computer science fundamentals, including data structures, algorithms, and systems.
- Have a genuine interest in markets and how software supports them.
- Be able to start the internship on June 1, 2027.
- No finance experience is required.
- Support the development of C++-based trading applications and tools.
- Complete hands-on projects that contribute to the firm's daily activities.
- Gain exposure to how trading works, from the underlying theory to the systems and tools built around it.
- Attend regular sessions with senior engineers covering the fundamentals of the systems and tools used.
- Work directly with engineers, traders, and other teams on projects that matter to the firm day to day.
- Receive direct feedback from engineers while learning in real time.
Generating company summary.
Company Size
51-200
Company Stage
Private
Total Funding
N/A
Headquarters
Chicago, Illinois
Founded
2008
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Simplify's Take
What believers are saying
- Old Mission sponsored ICI, Cboe, STA, and PyCon in May 2026.
- The firm is reportedly subleasing 70,000 square feet at 167 North Green Street.
- 2026 recruiting remains active, including junior ETF sales trader roles and Harvard postings.
What critics are saying
- Single-dealer platform launch slips beyond 2025, wasting hiring and ceding clients to Jane Street.
- ETF market-making profits compress if Citadel and Jane Street tighten spreads faster.
- Old Mission's Illiquid-ETF niche concentrates revenue; a risk-off ETF freeze hits inventory hard.
What makes Old Mission unique
- Old Mission owns ETF liquidity in hard-to-price, illiquid products, not plain-vanilla flow.
- The firm held 976 U.S. equity positions worth $4.2B in Q1 2026.
- Eugene Davidovich’s 2025 platform hire signals direct bilateral access to proprietary liquidity.
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Benefits
Competitive Salary
Discretionary bonus
Top tier Medical, Dental, Vision, Disability and Life Insurance paid for by the firm
401(k) with employer match
Full stocked kitchen, free breakfast and lunch everyday on-site
Tuition reimbursement
Flexible Spending Plan
Commuter Benefit Program
Company News
Ameriflex Group Inc. purchased a new stake in SPDR Nuveen ICE Short Term Municipal Bond ETF in the 4th quarter worth approximately $27,000.
OLD Mission Capital LLC purchased a new position in shares of iShares Short-Term National Muni Bond ETF in the first quarter valued at about $8,875,000.
CHICAGO, Sept. 9, 2025 /PRNewswire/ - Old Mission Capital, a leading global market maker in exchange-traded funds (ETFs), today announced that Eugene Davidovich has joined the firm to lead the development of its first single-dealer trading platform, expected to launch by the end of 2025.
Finally, OLD Mission Capital LLC acquired a new stake in Schwab Emerging Markets Equity ETF in the fourth quarter valued at approximately $20,734,000.
Finally, OLD Mission Capital LLC acquired a new stake in Global X Silver Miners ETF in the 4th quarter valued at $948,000.