Tjebbe is involved in tax litigation. Within Loyens & Loeff, he is a member of the Formal Tax Law Team and the EU Tax Law Group. Tjebbe has written a PhD thesis on the relationship between taxes and the right to property. Tjebbe is the author of several publications on various subjects. He is, amongst others, author of the fiscal encyclopedia NDFR and the Fiscaal Tijdschrift FED. Tjebbe worked as a law clerk for the Dutch Supreme Court for over six years.restructuring.