I am an intern and was put into a fresh project to do node back end. They didn't really give me any supervisor because the company lacks employees and has too many projects, and they were afraid I won't do myself. I was assigned to a front end oriented colleague to make a team, and cooperation with him is really demanding. After a month, a company that outsourced for us did a complex code review and said we wrote some darn good code, and they were said we are both mids (while colleague is a fresh Junior with an intern by his side). Damn it felt good :)
And also our pair is said to be the only Dev team in the whole company that can call client for itself, without PM or any host of the call, as others, with a lot of experience, need to be guided through each call :D