PitchMeAI Jobs
Old Mission

Senior Python Software Engineer

Old Mission · New York, NY, United States

Posted about 3 months ago · $150,000 - $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
81 days
Old Mission's roles stay open a median of 81 days
Reposted
No
Salary listed
Yes
75% of Old Mission's roles list one
Ghost-job risk at Old Mission
high
37 stale, 0 reposted of 40 open
Hiring momentum
43 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-23

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 Python Software Engineer at Old Mission will focus on developing and supporting execution platforms and real-time applications that integrate with trading systems. The role involves working with large-scale data and research systems while automating trader workflows, all within a collaborative and fast-paced environment.

Our read on this posting3.6out of 5
benefits
4/5
freshness
1/5
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 experience in a production environment
  • High proficiency in Python on Linux Platforms
  • Familiarity with relational databases and/or enterprise messaging/object storage (Kafka, Ceph, Iceberg)
  • Exceptional written and verbal communication skills
  • A collaborative team player with a knack for owning and driving exciting projects

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 and experience but is not guaranteed to be offered at this level.
  • Role involves working in a fast-paced environment, which may not suit everyone.

Summarised from Old Mission's posting. Read the full original.

Listed by Old Mission on their greenhouse job board, last confirmed open on 2026-10-23. PitchMeAI is not the employer.

More roles at Old Mission

All 40 open roles at Old Mission →

Apply to a Senior Python Software Engineer position at Old Mission - Jobs near me at New York, NY, United States