Here are some good questions to ask at the end of the interview, extracted from various sources. The ones in **bold** are the ones that tend to make the interviewer go "That's a good question" and pause and think for a bit.
- (If the company is a startup) When was the last time you interacted with a founder? What was it regarding? Generally how involved are the founders in the day-to-day?
- **What has been the worst technical blunder that has happened in the recent past? How did you guys deal with it? What changes were implemented afterwards to make sure it didn't happen again?**
- **What is the most costly technical decision made early on that the company is living with now?**
- **What is the most fulfilling/exciting/technically complex project that you've worked on here so far?**
- If you hire person, what do you have for him to study product you're working on and processes in general? Do you have specifications, requirements, documentation?
- There's "C++" (or Python, Swift or any other tech) in the job description. How will you estimate my proficiency in this tech in 3 months?
### Product
- Tell me about the main products of your company.
- What is the current version of product? (If it is v1.0 or similar - there could be a lot of chaos to work with)
- What products are your main competitors?
- What makes your product competitive?
- When are you planning to provide the next release? (If in several months, it would mean a lot of requirements specified in job description are not needed right now)
These questions are suitable for asking Engineering Managers, especially useful for the Team Matching phase of Google interviews or post-offer calls that your recruiters set up with the various team managers.
These questions are intended for senior level management, such as CEO, CTO, VPs. Candidates who interview with startups usually get to speak with senior level management.
- [Questions I'm asking in interviews](http://jvns.ca/blog/2013/12/30/questions-im-asking-in-interviews/)
- [How to interview your interviewers](http://blog.alinelerner.com/how-to-interview-your-interviewers/)
- [How to Break Into the Tech Industry—a Guide to Job Hunting and Tech Interviews](https://haseebq.com/how-to-break-into-tech-job-hunting-and-interviews/)