Önder received his bachelor's degree from Istanbul University Faculty of Law in 2023. After gaining experience as a trainee lawyer in litigation and corporate law departments at various law firms, he joined Çivicik Law Firm as a trainee and later continued his career as an attorney. His practice focuses on cryptocurrency law, commercial law, information technology law, intellectual property law and fintech.

At Çivicik Law Firm, Önder supports clients in resolving legal issues and developing practical solutions in his areas of expertise. He is a member of the Istanbul Bar Association and has advanced proficiency in English