Avantages
The founder Scott Cook is still awesome, very active and continually sets the tone of the company to focus on delighting customers and driving innovation. The engineering was (may still be) world class and the focus on customer understanding is second to none. The scale of technical challenges at Intuit is exciting...think about what it takes to assure turbotax is working the night before tax day or the challenges of having a product set as diverse as QuickBooks, Quicken, payroll, tax (pro and consumer), healthcare etc. and what it takes to make them all work together for the user, the enterprise backend and the employee wanting or needing to work on more than one offering.
Inconvénients
In the last 2 years current employees have voiced concern over a growing trend to outsource more engineering work overseas. Of course Intuit needs to compete globally so Intuit needs to source globally. But working and managing outsourced teams is tough and will not get you the development velocity and rapid execution of small scrum teams located in the same office so expect some frustration and process changes when your "US attrition" gets back filled in India.