I applied through a recruiter.
There was a generic recruiter phone call followed by a technical interview, which would have been followed by in-person rounds. They were quick in responding, and the people were very kind. The technical interview was quite technical. The interviewer asked multiple statistics problems, materials questions, fluid dynamics, etc. They seem to look for people with a decent amount of technical knowledge regardless of level.
There were beam loading questions, materials questions, and others.
The following metrics were computed from 4 interview experiences for the Helion Energy Mechanical Engineer role in Everett, Washington.
Helion Energy's interview process for their Mechanical Engineer roles in Everett, Washington is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Helion Energy's Mechanical Engineer interview process in Everett, Washington.