Slack reviews

4.0

77% would recommend to a friend

(1,094 total reviews)
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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
4.0
Jun 2, 2017

Overall loved, but changed A LOT

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

+ Work life balance is real + Incredible values - the first 300 or so people hired are incredible people who genuinely care about making the world a better place and are fiercely passionate about the product and each other + Relatively diverse + Very customer- and employee-centric + Smartest people I've ever worked with and some of the most humble as well + Exceptional learning & development opportunities + Great pay

Cons

- Whatever Stewart says goes. He has genius ideas and high standards (a good thing), but it leaves management with little autonomy and can cause slow downs/sudden changes in priorities. This may have gotten better as the company has grown. - A lot of people were really sad to see Bill Macaitis go. Very different values and POV came in with the new marketing lead. A lot of people have left since that transition. - Started out with the noble intent to hire authentic, empathic people who wanted to be part of a movement vs climb in their career. Those people are leaving or getting pushed out and more traditional enterprise B2B folk are taking their place. - Not accepting of politically conservative people. Even centrist left-wingers can feel uncomfortable there.

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Slack Response
8y
Thank you so much for your feedback, it’s incredibly valuable to us. As you can imagine, a company will look very different at 50 employees compared to 500 or 1,000 employees. Regardless of company size, focusing on hiring great people and listening to everyone’s perspectives is and always will be a top priority for our leadership team. One thing we are learning as we scale is that there will be different iterations of our business needs and culture which may not continue to be the best fit for everyone. We appreciate your candidness with regard to your personal experience at Slack. Thank you again for sharing.
5.0
Sep 26, 2015

Do the best work of your career

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Incredible opportunity Investment in people, facilities, tools, equipment Passion Values that are reinforced and sincere - not just crap written on a poster

Cons

none yet, just be careful as the company grows so quickly to remain true to roots. That comes from over communicating,

3.0
Jun 9, 2020
Recommend
CEO approval
Business Outlook

Pros

Beautiful HQ office (global pandemic notwithstanding), well-loved useful product, work/life balance is usually supported, strong culture of acceptance and inclusion (by a majority of ICs, at least), perks on par with comparable companies, codebase is receiving much-needed rewrites, CEO has a decent moral compass

Cons

The problem with a startup based on transparency that operates within its own “searchable log of all communication and knowledge” is that eventually, if successful, it grows up to be an enterprise company that has to admit that not everything should be found if searched for. This growth without corporate maturation has resulted in a massive communication and expectation rift, both between ICs and management as well as cross-functionally, and it fuels everything from the constructive feedback problem (everyone's afraid to give it for fear of seeming “not nice") to the product direction problem (roadmaps are slapped together and then changed if the OKRs they support start looking bad) to the reliability problem (tests are flaky and QA is understaffed) to the management problem (lots of middle managers are ineffective but aren’t supported or held accountable - until last year upwards 360 feedback cycles for management had been removed completely for over a year) to the leveling problem (many employees are brought in under-leveled, leading to a burst of work to be promoted and creating resentment and demoralization) to the hiring problem (C-suite, almost all recently and externally sourced to soothe stockholders, won’t concede outright that they want shiny FAANG resumes and not culture fit i.e. “Slackiness” anymore).

Viewing 34 - 36 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.