1. Optimize for iteration speed.
2. Push relentlessly towards automation.
3. Build the right software abstractions.
4. Develop a focus on high quality code with code reviews.
5. Maintain a respectful work environment.
6. Build shared ownership of code.
7. Invest in automated testing.
8. Allot 20% time
9. Build a culture of learning and continuous improvement
10. Hire the best

Sources: https://www.quora.com/What-makes-a-good-engineering-culture