Python Software Engineer applicants have rated the interview process at Old Mission with 3.3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 50% positive. To compare, the company-average is 39.4% positive. This is according to Glassdoor user ratings.
Candidates applying for Python Software Engineer roles take an average of 14 days to get hired, when considering 4 user submitted interviews for this role. To compare, the hiring process at Old Mission overall takes an average of 18 days.
Common stages of the interview process at Old Mission as a Python Software Engineer according to 4 Glassdoor interviews include:
Phone interview: 57%
Skills test: 29%
Presentation: 14%
Here are the most commonly searched roles for interview reports -
I applied online. I interviewed at Old Mission (Chicago, IL) in Jun 2026
Interview
Applied online directly, received invite to HR Screening Call, scheduled that a week later, then had screening call with Senior Software Engineer. Next stage is tech onsite consisting of DSA in Python, Python Analysis task and Linux challenge
I applied online. I interviewed at Old Mission (Chicago, IL) in Dec 2024
Interview
1. Online assessment with 50 Python MC questions, 15 Linux MC questions and a Leetcode-style problem (felt like a medium).
2. HR behavioral phone screen. I think these first two steps can happen in either order.
3. Live coding problem with an engineer. OOP not Leetcode. This was pretty enjoyable and I thought I did well, but I was rejected a few days after.
4. Based on what the recruiter said during step 2, I believe there would have been another coding round, followed by an on-site.
Interview questions [1]
Question 1
- Python MC questions got pretty into the weeds of a very wide spanning range of Python topics. Don't think there's a way to prepare for this other than knowing your stuff.
- Linux MC questions were very basic cli stuff: grep, permissions, piping etc.
- Design a class to process some shopping data stored in a bunch of CSVs within a Linux container they had set up.
I applied online. The process took 2 weeks. I interviewed at Old Mission (New York, NY) in Mar 2024
Interview
Applied End of Q1. Recruiter quickly reached to schedule a 20 minute introductory call. Followed by online HackerRank. Make sure you are familiar with Python under the hood and "multithreading" in Python using libraries like asyncio.
Interview questions [1]
Question 1
20 MC Python questions. 10 MC Linux questions. 1 Leetcode style question. 90 minutes.