Pros
I joined Meraki recently as a software engineer, and I'm loving it! The engineering is both unique and interesting. Many of the product teams work in both firmware and web development. Part of the reason I joined was because I think that cloud-managed network in devices was a unique opportunity to straddle both engineering worlds. You'll find a broad mix of engineering talent as peers--a lot of smart people doing work in testing/tooling/security/design/product. The work environment is colorful, fully stocked with food/espresso machines/game rooms. But my favorite thing so far are the people: super friendly, helpful and smart people who care about the product. Everywhere I've turned, people are welcoming, talkative and will extend a hand to help you out. This place has got great spirit--creativity, kindness and passion. Even beyond integrating new hires, considerable time/money is spent to bring together people on different teams through events/lunches/community groups/etc. Another reason I joined was because I believe the business behind the business is solid and has a high ceiling for growth. I'm still new, but based on what I've researched/heard/experienced, Meraki is growing fast and doing a great deal of interesting engineering work.
Cons
None as of yet -- I'm really enjoying Meraki so far.