IBM Software Developer Engineer interview questions
based on 1.8K ratings - Updated Jun 22, 2026
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Software Developer Engineer applicants have rated the interview process at IBM with 2.4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 68.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Developer Engineer roles take an average of 30 days to get hired, when considering 5 user submitted interviews for this role. To compare, the hiring process at IBM overall takes an average of 25 days.
Common stages of the interview process at IBM as a Software Developer Engineer according to 5 Glassdoor interviews include:
Phone interview: 50%
Skills test: 25%
One on one interview: 25%
Here are the most commonly searched roles for interview reports -
I applied online. I interviewed at IBM (Houston, TX)
Interview
A backend hackerrank assessment. A leetcode medium level type question algorithm and a rest api question. Got a follow up after about 20 days that I got rejected. Said something about choosing other candidates that aligned with the position.
I applied online. I interviewed at IBM (Hyderabad) in Dec 2025
Interview
firstly after applying i got a link in my mail for the coding assessment .The assessment was great and i had to solve 2 leetcode questions within 1 hr and i got selected...waiting for the next round
Interview questions [1]
Question 1
who is your current employer ,what is your expected salary...
Applied online through the IBM careers portal and received an interview invitation about two weeks later. The process had one technical interview on Microsoft Teams with two engineers. They asked C++ fundamentals, multithreading concepts, and some behavioral questions. The interview lasted around 45 minutes. Interviewers were friendly and focused on practical experience rather than pure theory. No coding on a shared editor, mostly verbal technical discussion. Received a rejection email about one week later.
Interview questions [1]
Question 1
Explain the difference between process and thread, and how you would handle synchronization in a multithreaded C++ application.