Any feedback on how is developer productivity in companies like Netflix, google, LinkedIn, AirbnB, facebook, PayPal, uber, Intuit, Twitter, Microsoft? How are the internal tools and processes and how does that impact developers in their day to day job?
Most places I've been don't measure it, and they should. Most places also think productivity has to do with the number of engineers on the team, or the hours worked.
Internal tools effort is driven by developer's productivity. We measure the effort success by number of SEVs avoided and features shipped. Productivity is measured some what inaccurate via L.o.C. which is a proxy for value. For example in calibration is really easy to see who is super productive and who slacks off, just by see the distribution of big changes and their types( hard critical features or just boilerplate code)
Slow as hell, bad tools, but getting better.