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
Jan 21, 2026
Recommend
CEO approval
Business Outlook

Pros

Fully remote work. Great people. Flexibility of working hours.

Cons

Ever increasing workload. Hard to progress. Almost no focus on projects or learning. Company culture has suffered since Salesforce acquisition.

4.0
Jan 8, 2026

Great people

Recommend
CEO approval
Business Outlook

Pros

- Nearly everyone I worked with embodied Slack's values: humble, collaborative, hard-working and smart - Work hard, go home culture is live and well - Great place for growth

Cons

- Steady corporatization since Salesforce acquisition, less product-focused and more sales-focused - There are fewer and fewer left who were part of Slack's culture pre-acquisition

Viewing 13 - 15 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.