Field-specific SaaS companies post-F&F, pre-A round with exactly 1 employee (probably an engineer) and two or more founders, where a founder joined later. Peop

Field-specific SaaS companies post-F&F, pre-A round with exactly 1 employee (probably an engineer) and two or more founders, where a founder joined later. People who need to communicate with one another because not everyone is on exactly the same page (employee may not have the full context, late arriving founder doesn't know everything yet), and that communication needs to be specific enough to start implementing something, but not so specific that other existing processes would be better suited (e.g. a pitch deck). ...or something like that!