Slack is great, parts of the codebase are not - Senior Software Engineer Slack Employee Review

5.0
18 Sept 2019
Recommend
CEO approval
Business outlook

Pros

My favorite thing about Slack is the folks I get to work with. My team is amazing and I love being surrounded by such a smart and diverse group of people. Leadership gets a lot of things right, the benefits are amazing, and work life balance is much better than a lot of other places I've been.

Cons

The biggest quality of life issue is the relatively fragile and monolithic codebase. I'm lucky enough to spend my time working out of the monolith, but it's there and it's big and it leads to incidents. We do have a healthy culture around incidents (postmortems, etc) but life would be better if we reduced the amount of time we spent on them.

Explore other reviews about Slack

5.0
13 Apr 2026
Recommend
CEO approval
Business outlook

Pros

flexible and chill and many intern events

Cons

had a fully remote team

3.0
5 Jun 2026
Recommend
CEO approval
Business outlook

Pros

Great environment to work at

Cons

Junior sales leaders after acquisition

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