Pros
First of all: I have great love for the people of Sonos and the products we make. I use them in my home daily and see the value in what we do each day. I personally love the culture at Sonos. It's fairly laid back, no expectation to work late or work weekends (although sometimes some of us do, just for yucks and because the weather in Boston sucks 5 months out of the year), just get your stuff done and go home. But people do work hard. Work from home is allowed, but like anywhere else, you will not be on the same footing as people coming into the office every day. Pay is great, I have a lot of freedom to explore new technologies and processes, and I have learned a tremendous amount. I have worked with some seriously whip-smart folks. It's also the first place in my life where I felt like it was OK to be me.
Cons
Too many people waiting to cash out on stock options who are kind of 'retired on the job' which can be incredibly frustrating to deal with. I blame Sonos for overpromising years ago on Stock options, but the level of overpromise pales in comparison to the start-up world, so it's not an abnormal situation. That being said, cash compensation is more than adequate. While I have learned a ton, I'm getting to the point where I feel like I'm outgrowing my role, but there's not really a place for me to move up (or out, or sideways) to. Then again, the mostly flat structure has made it so that nobody is backstabbing each other for middle management roles, which is a good thing. I hate working in an open office, but that ship has sailed long ago. You might wonder why so many folks work from home, well, there's your answer. Lighting is abyssmal, and engineers who sit near natural light seem to have all the control over lighting. It would be great to have a lighting expert come in and make some scientific decisions instead of a battle of engineers choosing how dark to make it because of how hypersensitive their nervous systems can get. Employees should not battle for lighting. Noise is also a problem. Overhead maskers help, but there's no real enforcement of having meetings (or phone calls) not out in the open. How the heck am I supposed to debug a seriously hard systems problem when impromptu meetings happen in open air? Paying software engineers more will not make these environmental problems go away and (surprise!) not magically make them more effective engineers. Environment is important, especially for work which requires up to 10 hours a day (only before a big milestone) of deep, sustained concentration. All in all, these are petty concerns. At the end of the day Sonos has granted me a lot of tangible and intangible benefits, and I am truly grateful for that.