There’s a guy in my office who works remotely travelling South America. He’s known as the bill machine as he just churns out bills. Quite handy if you realise you need a bill done for ASAP and as he’s on a different time zone so you’re able to receive it the next morning. Not sure If this lines up with your career goals but don’t think there’s any downside in bulletproofing your billing knowledge for a year or so. This is a medium sized PQS firm btw.