Starts with the recruitment specialist stating the company's interest for an interview. She provided the pay, work location (work from home), overview of the position, training. Then, the next step is the hiring manager who can be the supervisor and/or your manager and it may be a panel to include the team lead(s). It was informal and time well spent because they describe the ins and outs and the expectations of the position. They are also gauging if you are a fit into the team. Remember it is a two street. You are interviewing them as well.
