Slack reviews

4.0

77% would recommend to a friend

(1,094 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 1,094 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 Information Technology industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Jul 20, 2025
Recommend
CEO approval
Business Outlook

Pros

Salesforce benefits, lots of learning opportunities, work from home, agile environment.

Cons

While external hiring has slowed down recently, there are more internal opportunities to move around the company.

5.0
Jun 26, 2025

Good company!

Recommend
CEO approval
Business Outlook

Pros

Great engineering culture. Supportive coworkers.

Cons

Retention policy is not great. Refreshers are very rarely given.

Viewing 1 - 3 of 1,094 Reviews

Glassdoor has 1,226 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.