in the application form. it explicitly states which visas it sponsors: J-1, TN, E-3, sometimes O-1, and says "Softmax is not able to sponsor H-1B visas for this role."
The idea that what matters most is having the most followers is very arbitrary and not relevant to many strategies for enjoying Twitter. In my experience, Twitter is best as a place to have conversations, and this is optimal at some number of followers below 10k. There are many accounts out there having an amazing time at small numbers, having curated a medium-sized following of people who are interested in talking with them about the things they want to talk about.