IBM Software Engineer(Internship) interview questions
based on 157 ratings - Updated May 13, 2026
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Software Engineer(Internship) applicants have rated the interview process at IBM with 2.5 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 Engineer(Internship) roles take an average of 14 days to get hired, when considering 2 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 Engineer(Internship) according to 2 Glassdoor interviews include:
Phone interview: 100%
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I applied online. I interviewed at IBM (Bucarest, ) in Jan 2026
Interview
I only completed the initial coding assignment, which consisted of two fundamental Java problems, and did not advance. Frankly, I suspect the job posting was merely performative and that the intern positions had already been filled prior to my evaluation
Interview questions [2]
Question 1
Implement an algorithm in Java to determine whether a given string is a palindrome, accounting for edge cases such as null inputs or mixed capitalization.
Behavioral asking about oop, inheritance, polymorphism, abstraction... cs topics like what you know about full-stack, AI/ML, databases, APIs, and a few behavioral questions on the resume experiences. Overall pretty smooth experience and you'll hear back pretty soon regarding any next steps
Interview questions [1]
Question 1
Explain polymorphism and abstraction... explain REST APIs
Got asked questions about OOP, memory allocation, projects, experience, and about questions on how would I deal with problems in a project. 40 minute talk in total for me. Best to ask questions about the career to look more interesting to interviewer