I would highly suggest living in the southeastern part of the state (roughly in the Concord-Nashua-Portsmouth triangle). That's where most people live, and where most stuff is, and Boston is commutable from there. There are a TON of tech jobs in eastern Massachusetts, but not so much in New Hampshire itself. Like I said, the Boston area is commutable, and most tech jobs around here are still WFH. The northeast is expensive, housing-wise, but given your jobs, I think you'll find it affordable.

Also, you will find there are Brazilian and other Portuguese speaking communities in the area (especially in northeast MA).