Jan Rinnert was born in 1968 in Oldenburg/Holstein, Germany. After earning degrees in business administration and law, he worked for the state government of Bremen as senior political advisor to the senator of Economic Affairs. He then moved to the private sector, gaining professional experience as a management consultant at a leading international management consulting firm, before serving as managing director of Titan-Aluminium-Feinguß GmbH in Bestwig from 2002 to 2004.
Jan Rinnert joined the Heraeus Group in mid-2004 as Managing Director of Heraeus Kulzer GmbH. He has been a Member of the Board of Management of Heraeus Holding GmbH since August 2007 and was named Chief Financial Officer of the Group.
In August 2010, Jan Rinnert became Vice Chairman of the Board of Management of Heraeus Holding GmbH.
He was named Chairman of the Board of Management of Heraeus Holding GmbH in June 2013 and Labour Director.
He is married and has three children.