Karsten Friedrich, born in 1969, studied at TU Dortmund University. Afterwards he worked together with Christian in Dortmund. The two then parted ways and Karsten spent many years coordinating construction sites of all uses and sizes for various construction management offices. He joined KRESINGS in 2020 and has been in charge of the steadily growing construction management department ever since. Karsten and his team take care of numerous construction sites of various sizes in many parts of the country - for private and public clients.