Google

Great benefits (food, on-site amenities, etc.), generally competent colleagues, and a very high salary.

A very performance-oriented culture discourages teamwork and long-term solutions. Most of the job's complexity does not come from the core complexity of the problem but from making your solution work with the various (sometimes neglected) internal systems.

While some teams offer interesting problems to solve and room to grow your skillset, in many teams you will not learn a lot of transferable skills that could help you at other employers.

Middle management varies a lot. Some managers are great, supportive, and very technical. Others seem a bit too corporate. Higher management varies as well between product areas. Some are purely revenue-driven, while others seem to be more product-driven.

Internal culture is generally respectful, but the internal echo chamber can be exhausting at times.