It's good, but they will make you sweat for it
Pros
Decent pay and nice perks (free delicious food, conmute and health benefits, travel in business class...), nice environment with colleagues and manager, lots of freedom regarding what to work on and how to carry it out (design, implementation...). Very big and cool issues to work on, which you wouldn't fine any where else in the world due to the sheer scale of the company.
Cons
The internal career system seems well intended and fair at first, until you try to follow it. Very poor work-life balance. I've never worked so much in my entire career, yet it never seems enough to satisfy the criteria to grow up internally. All internal systems are custom made and many times they compare poorly to open-source alternatives, specially from usability and stability perspective. Which means you will spend a long time to master the internal tooling and all that hard-earned knowledge will be worthless when you leave the company. Also, that all engineers have so much freedom means that everyone is constantly reinventing the wheel, and increasing the overall complexity of the environment thus changes harder and harder as time goes by. This is exacerbated by the bonus system, which for many years has encouraged engineers to build and deliver new things rather than fixing existing issues. All of this combined has lead to a monstrous internal ecosystem which is a huge pile of entangled hair, where the simplest of tasks requires careful planning and understanding and will take several days. Management has lately changed the incentives to encourage fixing and better quality, but it's too little too late.
