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 Informatique industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Oct 13, 2020
Recommend
CEO approval
Business Outlook

Pros

I joined Slack after COVID-19 quarantine had already started, so my entire interview process, onboarding, and beyond has taken place remotely. While every company faces challenges due to this situation, I think Slack has handled it exceptionally well. I have felt very supported by the company and my peers in getting set up remotely, and I'm impressed by how quickly the entire company has adapted to working from home and continues to iterate on ways to make this work even better. As someone who used to have a long commute to the office every day, I appreciate that Slack is now allowing employees to work fully remotely in the future. In terms of the work, I feel that I've quickly ramped up on my team's work and have started making impactful contributions soon after joining. It feels like there's a lot of opportunity to take on responsibility and make meaningful contributions, while also being supported in prioritizing your own personal life and health.

Cons

I've struggled a lot with legacy code and learning PHP/Hack, which I didn't know prior to joining and have found difficult to work with. This can be frustrating for engineers who are used to working in more common languages which have more available resources online. The codebase also has some poorly documented / poorly tested areas which are difficult to understand and make changes to (these is mostly legacy code, as standards seem to have increased over time).

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Slack Response
5y
Hi there - thank you for sharing your onboarding experience. We're thrilled to hear that you've ramped up quickly and look forward to seeing what you accomplish here! Be well. -Slack
5.0
Oct 13, 2020

Great place to work!

Recommend
CEO approval
Business Outlook

Pros

Extremely collaborative, mission driven, focused on career development, great culture, awesome people.

Cons

Room to improve in executive alignment and transparency

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Slack Response
5y
Thank you so much for sharing your experience working at Slack! We're proud of our collaborative, mission driven team and appreciate you calling that out. Thanks again! - Slack
5.0
Oct 8, 2020
Recommend
CEO approval
Business Outlook

Pros

I started working with Slack remotely during COVID and was surprise to see how smooth their remote onboarding process was, even though like every other company it was not a standard practice few months back. Co-workers are very helpful and respectful of each others views which as a new member made me feel comfortable. Leadership has been nothing but thoughtful during these weird times and the culture here is one of the best I have experienced. Teams are ready and eager to learn new things and find our new ways to improve the product.

Cons

Being a rapidly growing company project priorities keeps changing and you may have to jump to something more important at hands which is not that bad but might be frustrating for some people

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Slack Response
5y
Thank you so much for sharing a review of your time at Slack! Our Learning & Development team is amazing and we are so glad to hear your remote onboarding experience they designed went smoothly. We are thrilled to have you on board! -Slack
Viewing 268 - 270 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.