Having done this in the past, what worked for us was Slack communication along with quick, bi-weekly calls to just catch everyone up. These calls were absolutel

Having done this in the past, what worked for us was Slack communication along with quick, bi-weekly calls to just catch everyone up. These calls were absolutely no longer than 15 minutes, and served the purpose well. Reviewing of code was essential through CI/CD that Gitlab offers, and we kept a repository/wiki of all shared libraries and such so that everyone knew where things were.