Pros
Backblaze is an online storage and backup provider that is still 80% owned by employees, and the board of directors is 100% employees. A small amount of Venture Capital was raised, and the VCs have an "board observation position" but VCs cannot vote on any decision. Backblaze is unusual in Silicon Valley in that it is profitable. As of 1/15/2016 Backblaze is 9 years old, so more like a middle age company than a startup anymore. Benefits are solid (health, dental, vision, 401k) and salaries are good.
Cons
Backblaze is growing in number of employees, but sometimes has trouble hiring enough people to keep up with all the work and additional work load that comes with exponential customer growth, so there are times when there is a lot of work and not enough people.