Yes, whoever is the supervisor/dean/administrator, it's their job. And generally speaking, they don't do it. If they do provide feedback, it'll be vague or weird - "you can smile more," "you should show them your concerning", etc - and essentially unrelated to actual teaching standards.
Kind of guarantees that "foreign experts" are always and forevermore naught but independent contractors. That may be the nature of the work, but it does mean we're not real staff. Performance bonuses, professional development... promotion - can't meaningfully happen. Which I think probably suits a lot of people on both sides. But it does make staying on for a long time feel like a mistake.