Slack reviews

3.9

77% would recommend to a friend

(1,096 total reviews)
avatar

Stewart Butterfield

88% approve of CEO

70% positive business outlook

Slack has an employee rating of 3.9 out of 5 stars, based on 1,096 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 Tecnologías de la información industry (3.9 stars).

Reviews by job title

1K reviews
4.0
Feb 9, 2026
Recommend
CEO approval
Business Outlook

Pros

uses Slack for everything, obviously great work-life balance clear expectations in eng IC career ladder

Cons

more and more Salesforce corporate policies eroding the old Slack people-first culture I've felt disengaged with executive leadership since the departure of Cal Henderson

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.

Viewing 379 - 381 of 1,096 Reviews

Glassdoor has 1,228 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.