Senior Software Engineer - Post Trade
Old Mission · Chicago, IL, United States
Posted 21 days ago · $200,000 - $250,000
or apply directly on Old Mission's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 21 days Old Mission's roles stay open a median of 45 days
- Reposted
- No
- Salary listed
- Yes 74% of Old Mission's roles list one
- Ghost-job risk at Old Mission
- high 31 stale, 0 reposted of 39 open
- Hiring momentum
- 42 roles opened in the last 90 days ↑ up vs. the prior 90 days
- Last confirmed on the employer's board
- 2026-09-17
Measured from postings appearing on and disappearing from Old Mission's own greenhouse board since 2026-08-03. Full hiring picture for Old Mission.
About this role
The Senior Software Engineer - Post Trade position involves building reliable systems at scale for a global proprietary trading firm. The role focuses on coordinating solutions that manage various inputs, outputs, and latency requirements, utilizing expertise in Python and C++ within a distributed system that supports global trading operations.
- benefits
- 4/5
- freshness
- 4/5
- career value
- 4/5
- role clarity
- 4/5
- pay transparency
- 5/5
Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Old Mission as an employer.
What you need
- Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline
- A minimum of 5 years of professional Python and C++ experience in a production setting
- Strong Linux knowledge (e.g. performance tuning, networking)
- Comfortable working with relational databases (e.g. PostgreSQL, MySQL, etc.)
- FIX experience (e.g. execution management, market data, drop copy)
- Exceptional written and verbal communication skills
What you get
- Fully paid Medical, Dental, Vision, Disability, and Life Insurance
- Fully stocked kitchen; free breakfast and lunch every day on-site
- Tuition Reimbursement Program
- 401(k) with employer match
- Paid Vacation, Sick, and Parental leaves
- Commuter and Flexible Spending Programs
Worth weighing
- Base salary range is $200,000 - $250,000, which may vary based on skills, experience, and education, but no specific details on bonuses or total compensation are provided.
- The role requires working in-office with limited remote days, which may not suit all candidates.
Summarised from Old Mission's posting. Read the full original.
Listed by Old Mission on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.
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