Oliver Deisenberger studied law at Johannes Kepler University Linz and completed his law degree in February 2022. During his studies, he worked in the claims department of an Austrian insurance company.
Before joining Singer Fössl Rechtsanwälte, Oliver Deisenberger worked as a trainee lawyer at a renowned commercial law firm with offices in St. Pölten and Vienna, specialising in corporate and employment law. He completed his mandatory court practice within the jurisdiction of the Vienna Higher Regional Court.
In April 2026, Oliver Deisenberger passed the Austrian bar examination with distinction. Since September 2026, he has been working as a trainee lawyer at Singer Fössl Rechtsanwälte OG, advising clients on civil law matters, with a particular focus on corporate law, employment law and insurance law.