Pros
Slack has a beautiful office in SF which is one of the most wonderful offices I have worked at Aesthetically. Good Co-workers who are nice and work together collaboratively
Cons
Everything else especially Management. The Management is very traditional, and has low diversity although Slack stresses on being a very diverse culture and tries to portray this via Social Media or Articles however internally that's not very true. There are no Managers who I can relate to who, like other Unicorn startups are less traditional, new generation, energetic and diverse. I also wish we had a more Front End specific Managers because most Managers here are not very good at Front End Engineering which causes discussion gaps between Engineers and Managers.