Slack Overview

  • San Francisco, CA
  • 1001 to 5000 Employees
  • 2014
  • Company - Public (WORK)
  • Internet & Web Services
  • Unknown / Non-Applicable

CompetitorsMicrosoft, Atlassian, Meta
Create Comparison

Slack has transformed business communication. It’s the leading channel-based messaging platform, used by millions to align their teams, unify their systems, and drive their businesses forward. Only Slack offers a secure, enterprise-grade environment that can scale with the ...
Mission: To make people’s working lives simpler, more pleasant and more productive.

Glassdoor Awards

Best Places to Work: 2021(#71), 2020(#69)

Top CEOs: 2021(#82)

What people are saying about Slack

Join the conversation on


207.3K Members 

Ask candid career questions

Chat with the community.

-1 -
Join the conversation on

Slack Reviews

Recommend to a Friend
Approve of CEO
Stewart Butterfield
Stewart Butterfield
579 Ratings
Top CEOs 2021
Current Employee

"Great culture, great product"

May 16, 2022 - Account Executive
Positive Outlook
Approves of CEO


Amazing culture, excellent product, it can do anything you want it to do, backing of Salesforce


It can do anything you want it to do - there's a lot of cross selling and soft ROI, always competing with Teams. Still working to harmonize the Slack-Salesforce value prop
See All 767 Reviews

Diversity & Inclusion at Slack

(260 Reviews)

Diversity Programs & Initiatives

Our Vision

Our vision at Slack is a world in which organizational agility is easy to achieve, regardless of size. Slack is a tool for everyone—and inclusivity should be reflected in the people who imagine and build the product itself. Since the company’s beginnings five ye

KEY NOT FOUND: diversityAndInclusion.alt

Diversity & Inclusion FAQs

All answers shown come directly from Slack Reviews and are not edited or altered.

How is diversity at Slack?

...I think the culture is what makes Slack stand out and while sometimes the workload does get intense and the diversity can be improved for people of color, I know Slack is doing its best and I appreciate it....Read More

Read 37 more responses

Slack Photos

+ Add Photo
Slack photo of: MISSING VALUESlack photo of: MISSING VALUESlack photo of: MISSING VALUESlack photo of: MISSING VALUESlack photo of: MISSING VALUESlack photo of: MISSING VALUESlack photo of: MISSING VALUE

Slack Interviews

Getting an Interview
Applied online58%
Employee Referral20%

  1. Marketing Interview

    Anonymous Employee in China
    No Offer
    Negative Experience
    Average Interview


    Initial interviews with HR very positive. Lady said she would put me through to the next round but then heard nothing. I follows up and was told that they might be hiring an internal candidate instead. They never got back to me to confirm so I assume they did.

    What transferable skills can you bring?

    Answer Question

See All 622 interviews

Company Updates

June 16, 2021
Hey, we know that guy! Congratulations to Stewart Butterfield for being named one of Glassdoor's Employees' Choice Top CEOs. 🥳
Shared image - Top CEOs
Top CEOs
June 2, 2021
KEY NOT FOUND: company-updates.categories.culture
It’s once again Pride Month and we’re here, as always, to remind you that you belong. Full stop. Whether you identify as part of the LGBTQIA+ community or as an ally, the more we learn, the better we can become together. Here are some stories from our OUT employee resource group.
Shared image - Out at Slack: Embracing every identity to redefine inclusivity
Out at Slack: Embracing every identity to redefine inclusivity

Slack Awards & Accolades

  • 2020 Glassdoor Best Places to WorkGlassdoor2020
  • Best Startup of the YearThe Crunchies2017

Pledges & Certifications

  • Veteran Hiring Commitment

    Committed to helping America's military veterans find work

  • Social Responsibility Pledge

    Formal programs or foundation to give back to communities

  • Diversity Commitment

    Has programs that support a diverse and inclusive workforce

  • Pledge to Thrive

    Taking steps to prioritize employee well-being

Popular Careers with Slack Job Seekers


Slack FAQ

(52 Questions)

All answers shown come directly from Slack Reviews and are not edited or altered.

See questions about:

What is paid time off like at Slack?

...They understand that employees are humans and not machines, you're value is beyond your work to the company and they show it through generous compensation, time off, and even work from home stipends....

January 13, 2021

Read more

See 11 more answers

Work at Slack? Share Your Experiences