"Team velocity" is just a measure of the teams overall performance. I'm a senior software engineer on my team so a large part of my work is not coding but work that helps the team function: code reviews, mentoring juniors, design discussion, adhoc and planned pair programing, triaging issues that are escalated to engineering from the customer support team, etc. The closest I ever get to sales is maybe joining a call as a technical expert if they need more expertise (or assurances on a big contract deal) than the sale tech expert on our product can provide.

Most of these things really are harder to do remote. I could honestly see how you'd be more productive and have stats to prove it if the vast majority of your responsibilities were just code.