Thanks for your interest! Most of our volunteer opportunities are in-person (in-person teaching, mentoring students at Hackathons, hosting field trips to your office, etc.).. but one way someone could help remotely is contributing to https://popcode.org . This is an open-source HTML/CSS/JavaScript editor that we use in our classrooms, developed by a A+ volunteer in NYC. There's a whole list of issues that someone could work on for us, which would help us have even better tools with which to teach in schools: https://github.com/popcodeorg/popcode/issues

AFAIK, the only volunteering they offer is in person -- in classrooms, at hackathons, on field trips, hosting interns, etc.