After obtaining the Masters Degree in Tax Law at Leiden University in the Netherlands, Keimpe gained extensive international tax experience at a Big Four firm in Rotterdam, before moving on to the International Private Banking and Trust division of Bank MeesPierson in the Netherlands. He has over 25 years experience in the Financial Industry.

After the acquisition of bank MeesPierson by the Fortis Group, he switched to the International Clients Department of Bank Insinger de Beaufort, first in Amsterdam, later in Luxembourg.

Keimpe founded in 2010 together with his partners Christian Tailleur and James Body the predecessor of what today is LGL Corporate Services (Luxembourg) S.A..

Keimpe has a strong background in taxation and structured wealth and has a strong International back ground. He served  and serves on the boards of companies owned by UHNW individuals, as well as Luxembourg subsidiaries of stock exchange quoted companies and investment funds.