A Hessian fire-protection engineering office run by Marco Kittner-Meier, M.Eng., who was appointed öffentlich bestellter und vereidigter Sachverständiger für vorbeugenden Brandschutz by the IHK Gießen-Friedberg in December 2023 and additionally holds a Prüfsachverständiger für Brandschutz appointment. The practice works from Karben north of Frankfurt and a second office in Würzburg on fire-safety concepts, plan checking and expert reports. It is a single-principal office.