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

5.0
Sep 18, 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
Mar 16, 2026
Recommend
CEO approval
Business Outlook

Pros

- high per-hour pay - 10k housing stipend

Cons

- no overtime pay (or you can, but most don't log it since hourly pay is already so high)

4.0
May 11, 2026
Recommend
CEO approval
Business Outlook

Pros

Great people, no micro management, good work/life balance

Cons

Limited opportunities, lots of hiring freezes, limited transparency in leadership decisions

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