Senior Android Developer Interview Experience - Vancouver, Canada
Process
I received an email from a recruiter after applying on their website, scheduling a quick phone call.
During the call, they asked many questions about my experience, why I applied to Slack, and other similar questions.
After that, I scheduled a 45-minute call with an engineer. They asked me a few data structure questions and a few other Android-related questions.
These were very generic screening questions that I always pass. I answered all questions, but I don't think the interviewer liked it when I asked, "Please feel free to tell me the correct answer." I think he stuttered to add more information, and when I asked a follow-up question, he said, "Let's move on."
Overall, I really wanted to work for Slack, but now I'm not sure it's a forgiving environment that I would like to work in.
Questions
Explain how hashing works.
Memory in Java.
WeakReference, what does it do?
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Interview Statistics
The following metrics were computed from 1 interview experience for the Slack Senior Android Developer role in Vancouver, British Columbia.
Success Rate
Slack's interview process for their Senior Android Developer roles in Vancouver, British Columbia is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very good feelings for Slack's Senior Android Developer interview process in Vancouver, British Columbia.
Slack Work Experiences
- 1.0A culture pillaged by self interested sociopathsSenior Software Engineer • Former EmployeeSan Francisco, CAOctober 21, 2025Pros: They give a lot of swag, work pace isn’t too hard, and mid-level people are generally nice.Cons: This company ruined my life and PIP’d me for taking time off to mourn. They took from me my passion for what I do and made me realize how quickly someone will throw you under a bus. Scheming managers. They did a soft layoff where they were forced to PIP a certain number of employees, and I had never had a performance conversation or a negative comment. The manager fabricated evidence for a PIP (including asking for advice, taking sick time when my dad died, and calling in a senior engineer during a high severity outage). I’ve personally spoken to multiple other engineers that had the exact same thing happen to them.
- 5.0good companySoftware Engineer • Former EmployeeSan Francisco, CAJune 26, 2024Pros: Slack is a good app.Cons: Nothing that I can think of.
- 4.0Great place to work.VP Engineering • Former EmployeeSan Francisco, CAOctober 30, 2025Pros: Smart, dedicated people, and satisfying work on a product that is important to a lot of people.Cons: Salesforce culture is very different than Slack's. Since the acquisition, things have definitely changed.
