Yahoo

Free food, perks, open-source technologies, cab service, a lot of smart people (who are now leaving in large numbers). It was a fun place to be.

Everything else. Management has become extremely political, and they just do whatever it takes to save themselves, while the engineers are the scapegoats. There is no real innovation happening here since people have become extremely defensive to meet their QPR numbers. Everything is now tied to your ratings (e.g., if you want to transfer to another team, you need to have above-average ratings, which you can get only if you can lick your manager's boots). Marissa has destroyed the company culture and values for her own benefit.

Stop being authoritarian and bureaucratic.

Take care of the employees that have stayed with you for long.

Scrap the QPR process.