Kristiin Oja is a business and marketing professional, kitesurfing and crossfit enthusiast, and former snowboarding instructor. She received her Bachelor's degree in Business/Marketing from Mainor Business School and studied at Otepää Gymnasium. Kristiin has an extensive background working in various roles, including as a Co-Owner at Surftown Surfiklubi MTÜ, Marketing Manager at ASBIS, Advertising Project Manager at Olliwood OÜ and Capital FM OÜ, and Consultant at Teteris OÜ.

Her passion for kitesurfing has led her to work as a Kitesurf Instructor at Hängin, Big Dayz, and Kitepeople Kiteschool. She has also worked as a Crossfit Trainer at Tallinn Crossfit and Co-Owner at Lapse Pidu OÜ.

Kristiin has also been actively involved in various organizations in Estonia, including Bricole MTÜ, where she served as Chairman. She also worked as a Telemarketing Assistant at Ajakirjade Kirjastus AS, Marketing Intern at Ajakirjade Kirjastus AS, and Assistant at Capital FM OÜ.