After leaving school Stewart went into the fabrication and welding industry, where he stayed for the next 8 years. He has also gained experience in the building industry, working on everything from new builds to renovations.
Stewart returned to education as a mature student, achieving an HNC at Fife College in fabrication, welding and NDT. He subsequently completed a BSc Honours degree in renewable energy technology.
Stewart has been teaching NDT for the last six years and also taught other engineering disciplines at Fife College.
Stewart is also a martial artist in the traditional Korean martial arts, Kuk Sool Won, where he currently holds the rank Jo Kyo Nim which means first degree black belt.