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 Informationstechnologie industry (3.9 stars).

Reviews by job title

1K reviews
2.0
Mar 27, 2025
Recommend
CEO approval
Business Outlook

Pros

easy to get things done on monolithic architecture good direct teammates

Cons

no RSU refreshers that come anywhere close to the initial grant, don't expect to stay here longer than 4 years. very stagnant for your software engineering career, there aren't any interesting engineering problems to solve (which yeah, is a testament to how well slack's architecture works) 0 growth opportunity team handed off to 4 different managers in as many months salesforce influenced culture becoming very toxic

4.0
Mar 27, 2025

Good job

Recommend
CEO approval
Business Outlook

Pros

Great progress in role can move forward fast

Cons

Difficult to learn the Aiten initiallg

Viewing 55 - 57 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.