Process
Initial phone call with recruiter.
Interested in handling heavy (1000+) requests per second for API/backend services.
If you do not have this experience, you will not move on past the phone interview and they will inform you right there.
Questions
How many requests per second is an API that you worked on?
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Interview Statistics
The following metrics were computed from 23 interview experiences for the Slack Senior Software Engineer role in United States.
Success Rate
26%
Pass Rate
Slack's interview process for their Senior Software Engineer roles in the United States is very selective, failing most engineers who go through it.
Experience Rating
Positive39%
Neutral13%
Negative48%
Candidates reported having mixed feelings for Slack's Senior Software Engineer interview process in United States.
Slack Work Experiences
4.0
Challenging Eng Work, Woke Politics
Senior Software Engineer • Former Employee
San Francisco, CA
March 25, 2025
Pros: Challenging engineering work, dedicated and hardworking teammates, and I learned a lot solving interesting problems. There is a good work-life balance.
Cons: Woke company politics and discrimination against white males in hiring.
5.0
Good company
Senior Software Engineer • Current Employee
New York, NY
April 3, 2024
Pros: The pay is quite competitive.
Cons: Lots of changes after the Salesforce acquisition.
5.0
good place to work
Senior Software Engineer • Current Employee
Seattle, WA
November 10, 2025
Pros: Overall, a pretty decent place to work.
Cons: It is just becoming another Salesforce-acquired company.
- 4.0Challenging Eng Work, Woke PoliticsSenior Software Engineer • Former EmployeeSan Francisco, CAMarch 25, 2025Pros: Challenging engineering work, dedicated and hardworking teammates, and I learned a lot solving interesting problems. There is a good work-life balance.Cons: Woke company politics and discrimination against white males in hiring.
- 5.0Good companySenior Software Engineer • Current EmployeeNew York, NYApril 3, 2024Pros: The pay is quite competitive.Cons: Lots of changes after the Salesforce acquisition.
- 5.0good place to workSenior Software Engineer • Current EmployeeSeattle, WANovember 10, 2025Pros: Overall, a pretty decent place to work.Cons: It is just becoming another Salesforce-acquired company.
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