I created and sold a software system to a company and joined them. I stayed there for 6 years continuing to work on it and building a big team. During this time

I created and sold a software system to a company and joined them. I stayed there for 6 years continuing to work on it and building a big team. During this time, I quietly spun off a small rogue effort to build a newer client app for the system in Rust. This quickly became our most popular product. The company is now winding down the project overall, but decided to keep and adapt this Rust client to its own backends. It is the only part which survived and it was the only thing I wasn’t given orders to build.