An employer interest letter is not a work permit.
It can document planned work. It does not itself authorize that work.
Interest starts the conversation. The approved petition and the person's status control authorization.
3 O-1 criteria don't equal automatic approval.
They open the review. USCIS still asks whether the full record shows sustained acclaim and top-of-field standing.
Count the criteria. Then test the whole story.
Your job title is not O-1 evidence.
"VP" can sound impressive and still leave the real question unanswered: what changed because of your work?
The title names the role. The record must prove responsibility and impact.
Most tech people finish counting and realise they're at 2 or 3 O-1 criteria, not 0.
A conference talk, a senior role, a patent, a well-used open-source project. They all count.
O-1 visa for software engineers and data scientists.
Most rule themselves out assuming it's for Nobel winners. Almost half of these visas went to people in science and technology.
"Membership in associations requiring outstanding achievement" sounds academic.
An invite-only fellowship counts. So can maintainer status on a serious open-source project.