Slack reviews

3.9

77% would recommend to a friend

(1,095 total reviews)
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Stewart Butterfield

88% approve of CEO

70% positive business outlook

Slack has an employee rating of 3.9 out of 5 stars, based on 1,095 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 Tecnologías de la información industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Feb 15, 2017

The best job I've ever had. Hands down.

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

- True, meaningful benefits - Opportunity, not just as an individual contributor, but as an organization. We're solving interesting problems and are redefining the way people work and communicate every single day. It's nuts. - Leadership is incredible. These are people who have storied careers and know what it takes for a company to be successful in the long term. Decisions make sense. There really is transparency, which is a word a lot of Silicon Valley companies throw around but don't actually honor, and accessibility. You can DM or approach any of our C-level executives with anything and actually get a thoughtful response. Again, it's nuts. - People care about each other so much. SO much. I've never had so many people invested in seeing me grow and succeed, people who aren't even on my team or even members of my organization. Like... what? How do they even know who I am? - There's actual work life balance. It's another thing that a lot of companies tout, but Slack means it when they say they want you to work hard and go home. People have families and hobbies and gym memberships and friends and none of that has to go by the wayside or be sacrificed in favor of putting in 12 hours at their desks. - My coworkers humble and inspire me every day. These are multitalented, accomplished, brilliant folks, some of whom are truly thought leaders, and I feel so fortunate to have the opportunity to work alongside them. I can't stress enough how much I've learned. - I'm happy. Like, for real happy. Obviously people have bad days and there's no such thing as paradise on earth, but for the first time in my career I'm okay with getting out of bed in the morning.

Cons

- We've outgrown HQ and are spread across a few properties in San Francisco. It's a bummer not having everyone under one roof, but this is something folks are aware of and are working to remedy.

4.0
Feb 8, 2026
Recommend
CEO approval
Business Outlook

Pros

Front and second line management is fantastic. Pay and benefits are solid. Good work-life balance. Lots of opportunity for advancement/career exploration

Cons

Salesforce's aggressive sales tactics angere customers. Product vision and development has slowed and shifted in favor of Salesforce. Pricing structure makes it hard to sell. Salesforce is a hype machine that claims to be at the forefront of everything when it's not in many cases so you have to learn to step back and look at things with a critical eye. Prod

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

Viewing 181 - 183 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.