Tejan runs the programs at Plano Senior High School and Allen High School. He began with Performance Course in the summer of 2019 and came on full time in May 2021 after coaching stints at the University of Texas under Yancy McKnight and as a full-time strength coach at the University of Tulsa, where he directed athletic performance for softball and assisted with football.

Tejan played football at Brigham Young University, where he served as a team captain, and went on to the Kansas City Chiefs, where an injury helped him find his passion for strength and conditioning. He holds a bachelor's degree in Economics from BYU.

Tejan is a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association and a Level One Sports Coach through USA Weightlifting (USAW-1).