Pros
Some amazingly smart people work here. I've learned dozens of widely used open source technologies, worked on a variety of stimulating problems, and made some life-long friends.
I've gained full-stack experience working on embedded systems, BIOS configuration, an initramfs, the Linux kernel, IPMI, a production SELinux policy, udev, LVM, MySQL, several distributed systems, virtualization, HTTP servers, and even client-side JavaScript.
Cons
We're venture-backed and still looking for a good market fit. We've got a million grand ideas that make it hard to have a clear product vision.