#2 requires a mix of (i) reference interviews, and (ii) digging into details during candidate interviews. Read these books to learn how:
* Who: https://www.amazon.com/Who-Geoff-Smart/dp/0345504194
* Topgrading: https://www.amazon.com/Topgrading-3rd-Promoting-Turbocharges...
How to hire your first engineer - https://blog.ycombinator.com/how-to-hire-your-first-engineer...
Convincing Engineer to join your team and a basic structure for the process - https://blog.ycombinator.com/convincing-engineers-to-join-yo...
General thoughts about hiring - http://blog.samaltman.com/how-to-hire
The book "Who" gives a good idea about a good process. Hard to apply when you are not looking for a "generalist" - https://www.amazon.com/Who-Geoff-Smart/dp/0345504194/
Some of the manager tools podcasts episodes - https://www.manager-tools.com/map-universe/hiring-0
We used it to build our hiring process for http://www.thinkful.com/ and it consistently proves valuable.
We also use it to help our students prepare for job interviews.
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