What I liked
Great people, challenging problems, and amazing culture. I learned so much over the course of the summer about building software and improving my software engineering skillset. Ab Initio gave me a lot of autonomy over the design aspects of my project: the software design, the language, the interface design, etc. Plus, Ab Initio structures their intern program such that they aim to ship any and every intern project into production, so you know your work will be used by someone.
The food is to die for, and they have lots of quirks including surprise/spontaneous events hosted by their design team. There's an inside joke that goes something to the tune of "Ab Initio is a food company that writes software to pay the bills." Definitely recommend this place if you're a foodie.