Facebook

I'm an engineer and we're hiring a TON of engineers. You would have the opportunity to work on any of Facebook's consumer products or internal teams. At FB you get to choose the team you join. There are 100+ teams across Facebook App, Whatsapp, Instagram, Oculus, Growth, Infrastructure and Product teams that you can choose from! Teams work in React, Javascript, PHP, C++, Rust, Python, Presto, Hive and a whole host of advanced technology. The developer tooling is integrated company wide and allows you to be very productive. The culture is one of growth where everyone is helping each other learn new skills and tackle new challenges.