You have to bring it up when you're interviewing, and get in deep. Tell the technical interviewers what you want to get better at and be honest and be prepared to say no to good offers that aren't going to nurture your skill set. Ask about how they do code reviews, what professional development they offer, how often they pair program, do they do tdd or just make it work as fast as possible to appease the business, how the team has helped each other to grow and whatever else feels important to you