Slack reviews

4.0

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 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 Tecnologías de la información industry (3.9 stars).

Reviews by job title

1K reviews
5.0
Apr 18, 2017

An ego free zone

Recommend
CEO approval
Business Outlook

Pros

There are so many! Yes there are the cool things like great offices, treats like massages and great food. The real pros for me is that the quality of my working life has fundamentally changed. Gone are the days of battling through hundreds of emails before even starting the day. Communicating using Slack is, dare I say it, fun!! I feel truly valued here, it is such a high support environment. My team are amazing and we constantly help each other be better. One of the main things I noticed when I started at Slack was a complete lack of ego. People with big egos, or a 'look at me, I'm great' approach to working, aren't successful at Slack. We thrive on collaboration.

Cons

The only con for me is timezone, I would love to be able to have more real time with my North America and APAC colleagues, but everyone is very mindful of those challenges

5.0
Apr 17, 2017
Recommend
CEO approval
Business Outlook

Pros

I joined Slack as a Senior Software Engineer working on mobile in late 2014 when there were about 70 employees. Now, 2.5 years later, there are over 700 (maybe even 800?). Scaling a company that rapidly is chaotic and challenging, but having worked at other places who came out of that process with a bad culture and poor management, I continue to be impressed with the thoughtful way Slack management has scaled the company. Not every decision that's been made has been correct, but my experience has been that management is very open to feedback and willing to iterate on processes or change them completely when we can see that they aren't working. One thing we are known for outside the company is diversity & inclusion, and my personal experience has been very positive in that regard, though as a white woman my perspective is limited. We do compensation audits and adjustments every 6 months, both market rate adjustments as well as performance based raises, and I've been very happy with that process. Hard to be mad about getting a raise every 6 months without having to ask for it. The work life balance has been in my experience excellent. On the walls it says "work hard and go home" and throughout the 4 managers I've had in my time here I have never felt pressured to work late or work weekends to meet a deadline. We've responded to missed deadlines with retrospectives about our planning and estimation process, rather than blaming engineers or anyone else. There's a lot more I could talk about, but I hope this is a helpful glimpse into what it's like working here. My experience isn't universal, and as an earlier employee I probably have some measure of privilege that I can't see clearly at the moment, but I see myself here for years to come and can't imagine leaving unless there are dramatic changes in management (like if Stewart and Cal left).

Cons

Because of how fast we have been growing, it can get a little chaotic sometimes. There have been projects that have been 95% complete and then changed by management at the last moment, causing frustration and extra work for engineers. We are still learning how to most effectively communicate at this scale. There can sometimes be a tendency to be self-congratulatory for how, compared to other tech companies, we are more diverse etc. This is called out pretty rapidly when it happens, as it should be because we have a lot of work to do still. As management has said before internally, Slack Is A Distracting Menace. Working at a company full of Slack power users means that it can be hard to get work done without developing excellent focus skills.

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Slack Response
8y
Thank you for sharing! We are happy to hear that you have a solid work life balance and that you see yourself here for years to come. As you mentioned, rapid growth can be chaotic and challenging, though we are constantly striving to do our best to mitigate common growing pains. Thank you again for such a thoughtful review; feedback such as yours will continue to make us better as we grow.
5.0
Apr 17, 2017

Business Operations

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

- Amazing opportunity with a massive vision to change enterprise software - Super collaborative and engaged employee base - Good work life balance - Get to work on things that affect a ton of people everyday

Cons

- Always comes with the growing pains of scaling and trying to become global. Need to continue to work on solidifying vision and company mission / culture.

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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.