IBM

IBM's interview process is structured and competency-based, leaning heavily on STAR-format behavioural responses tied to IBM's core values. The tone is generally warm and professional rather than adversarial; interviewers are often line managers or senior engineers rather than dedicated interviewers.

For SDE roles, there is a clear split: earlier rounds validate technical fundamentals and problem-solving, while later rounds assess cultural fit, ownership mindset, and communication. Senior SDE loops add architecture and system design stages and expect candidates to demonstrate cross-team influence and mentorship.

IBM's large enterprise nature means process timelines can be slow (2–6 weeks), and multiple stakeholders may be involved in the final decision. Feedback sharing post-rejection is inconsistent but more common than at pure product companies.