Amazon

Learning - you will get ample opportunity to learn almost everything, technical and non-technical. But you would hardly find anyone, except so-called "managers," who would like to stay beyond a couple of years, or anyone who would like to join Amazon again.

• culture: employees are often recommended to watch and follow "Games of Thrones." One can figure out the intention.

• lack of leaders: there are great managers who can "just" meet deadlines, but not good leaders who are humble, experienced, and can inspire you.

• poor team structure: You graduate from a top-notch university, but your growth here is limited by the fact that your manager is just a couple of years more experienced than you, whose only intention is to meet deadlines and his "promotion." What can one expect to learn from someone who has probably much less "real life experience" than you? There is a concept of a mentor over here, but it's just for namesake. It doesn't work most of the times. Your manager should be your leader, your mentor, not just another robot designed to meet deadlines.

Bring more "experienced leaders" to the team, not just any other manager with 3-5 years of experience who would hardly qualify as a "senior engineer" in any other competitive company.

Bring more people who have spent a ton of time in academia and industry, a minimum of 15 years, and then see the difference.