I'm not sure we have that title at my company. Our senior program technical leads might fit there. Theres really no set criteria - it's just if the people above you think you deserve it (kind of like any position). I do remember HR put out some example competencies. The only one I remember around that level was that a person could demonstrate that level of knowledge by having a book professionally published on a pertainate technology. Needless to say, there are very few people at my company in that level.