Pros
Really nothing - Voxy looks like a great company to work, but Product and Enginering are really struggling to get it together. If you're really want to work there, at least you're going to learn how NOT TO efficiently develop and mantain a product.
Cons
Their values are a facade, and the company doesn't have formal processes in many of their areas. Because of that they are 14 years in the market struggling to make profit. In the recent years a lot of Brazilians like me joined the team, but there's no salary equity. So you're going to work as much or even more than person that works in the US, but receiving about 1/5 to 1/4 of their salary comparatively. This is not limited to compensation, but anyone that works there is highly discriminated for being Brazilian. They don't have their ideas heard, and are often dismissed. Again, their values are very good in theory, but the work environment is vile. Moving on from compensation, Voxy has many of the worst managers that I ever seen. They are more concerned about "digging deep", as they say in their values, in frameworks that aren't MVP at all and need constant refactor, than to deliver faster and consistent value to their clients.