Pros
Sisel is not only a stable company that runs off of zero debt and outright owns all of its assets (including an incredible 300,000 square foot product manufacturing facility), but they've had some legitimately amazing growth through the pandemic and there are some major employment and career opportunities now and in the near future, including upward mobility. The culture has seen huge improvement the past few years - it's a fun, close-knit place to work with some great perks.
Cons
Not so much a con as a suggestion, but be ready to be assertive, be ready to bring ideas to the table, and be ready to banter. If you're super passive, like to keep to yourself in meetings, and have a less pronounced sense of humor, you're likely to have a more difficult time here.