Process
I had a phone interview with the recruiter.
The interview was technical, and he asked about my resume.
He followed up and also asked about how the internet works, and defining technical terms like UDP/TCP and giving examples of when to use either.
I also got asked about UI-related terminology and user experience problems.
The interview itself was fair, but I have to say, the quality of the voice and background noise was terrible – it sounded like a call center in there.
Questions
Define UDP/TCP and provide an example of each.
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Interview Statistics
The following metrics were computed from 7 interview experiences for the Slack Software Engineer role in Canada.
Success Rate
Slack's interview process for their Software Engineer roles in Canada is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very negative feelings for Slack's Software Engineer interview process in Canada.
Slack Work Experiences
- 5.0Positive Engineering ExperienceSoftware Engineer • Current EmployeeSan Francisco, CAJune 29, 2024Pros: - Good internal tools - Remote first - Ability to work cross-functionallyCons: - Red tape - Salesforce
- 5.0Solid place to workSoftware Engineer • Former EmployeeSan Francisco, CAApril 18, 2025Pros: - Great people and a great product - Always lots of opportunities to work on new product areas and improve the productCons: - Had trouble with lateral movement - Salesforce seems to be trying to integrate more and more into the company
- 5.0Good company!Software Engineer • Current EmployeeVancouver, BCJune 26, 2025Pros: Great engineering culture and supportive coworkers.Cons: Retention policy is not great. Refreshers are very rarely given.
