intern; internship
Refers to a student or trainee working temporarily to gain experience, or the position itself. Often used in phrases like インターンをする (to do an internship) or インターンシップ.
He did an internship at an IT company during summer vacation.
I work three days a week as an intern.
When I was a university student, I did an internship at a major company.
He worked as an intern at the startup over the summer.
I applied for an internship at a company I was interested in.
That company recruits interns every summer.