Here's what people have asked and answered about working for and interviewing at Poshmark.
Keeping your listings up to date. You can't repost clothing so it's hard to have other people see your listings without lowering the price.
They do hire foreigners. Anyone with access to the app can join.
It's all up to you and your sales and marketing ability. You work your own hours and it is essential to be disciplined and fresh every day. Eager to learn, as more contemporary knowledge and skill equal much more compensation and opportunity.