In the course of his career, he has advised in particular on corporate structurings, ongoing corporate taxation and numerous inbound investments by non-domestic banking groups. Guido has broad experience in the field of tax compliance (e.g. tax declaration, tax reporting), field audit support, tax restructuring and withholding tax Issues.

Before joining A&O Shearman, Guido worked for several years as head of tax / tax senior manager for the German entities of a non-domestic banking group. Before that, he worked in the tax department of a major audit and tax advisory firm for over 10 years, rising to the position of manager, where he advised corporate and banking groups.