Slack reviews

4.0

77% would recommend to a friend

(1,095 total reviews)
avatar

Stewart Butterfield

88% approve of CEO

70% positive business outlook

Slack has an employee rating of 4.0 out of 5 stars, based on 1,095 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Slack employee rating is in line with the average (within 1 standard deviation) for employers within the Informatique industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Jun 25, 2015

Great company

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Strong leadership team. Extremely useful and popular product.

Cons

There are no cons at this point.

5.0
Nov 17, 2012
Recommend
CEO approval
Business Outlook

Pros

* Awesome team of people that know their sh... tuff * Great products from mobile to browser-based * Good benefits (gym, health, dental, etc.) * Food trucks close by. Wednesdays and Fridays are sooooo good

Cons

* The preacher guy on the megaphone does his schpeal about once a week along the same street as the office

3.0
Sep 22, 2025

Wouldn’t recommend if you want to improve your career

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Onboarding Perks and Benefits Team bonding Organization and Protocols

Cons

Lack of adequate training. Cut throat environment. Two way speak (Says one thing, does another) Information silos Jealously and bad faith criticism

Viewing 124 - 126 of 1,095 Reviews

Glassdoor has 1,227 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.