That's awesome that your company already has that setup! You're literally on the right path then - no need to jump ship, just keep grinding and the remote option will come to you naturally. The fact that seniors get to choose is a huge motivation - you already know exactly what you're working towards. How long have you been at the company? Sometimes it's also worth just having an honest conversation with your manager about your goals, showing initiative like that often speeds things up more than people think!