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
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

4.0
Sep 7, 2025

Great people & product

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Excellent talent, high empathy, deep product thinking, solid tech stack, great work life balance

Cons

Politics and churn mainly via the broader Salesforce umbrella

Viewing 28 - 30 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.