Arnim Osterod studied law in Berlin and Bochum and worked at the Institute for Social Law at Ruhr-University Bochum. During his educational training, he also worked at Speyer University of Administration and at the Chamber of Commerce Abroad in Atlanta/USA.

He has been working as an attorney since 1988 and as a notary public since 2000, with his official offices being located in Siegen. From 1993 to 2009 he was a partner in the law firm Wiese, Osterod & Partner, whose practice focused on the field of tax law, in particular law governing contracts for work and services having an international dimension.

In 2009 Arnim Osterod became the proprietor of the law firm Osterod, Rechtsanwälte - Notar in Siegen.

Arnim Osterod joined Schleifenbaum & Adler as a partner in 2016.

The focus of his practice is on advising and assisting clients in the entire notarial field, in particular with regard to purchase and sale as well as the drafting of contracts in the real estate sector. He is furthermore experienced in all aspects relating to inheritance and bestowals as well as the drafting of wills, contracts of inheritance and transfer agreements within the framework of anticipated succession together with precautionary powers of attorney and living wills.

He advices and supports clients in the aforementioned areas (including at the branch offices in Siegen-Weidenau), in particular in the areas of general civil law, family law, real estate law and inheritance law.

Arnim Osterod is a member of the DAV Working Group on Building and Architects Law and of the German Notarial Association (Deutsche Notarrechtliche Vereinigung e.V.).