ABB Software Engineer interview: fundamentals and a difficult final round

The process started with a familiar technical sequence but became a test of both fundamentals and performance under pressure. I faced medium-level data-structures and algorithms questions, plus computer-networks and operating-systems topics with a clear cybersecurity-basics tilt. There was also a group discussion, which made it feel less like a one-shot evaluation and more like an assessment of h…

Shared by a candidate · reported Jul 2026. Interview formats change; use it as a guide, not a script.