Hartwich's mother is a nurse. After completing his abitur in 1998, he studied German and Political Science at Goethe University in Frankfurt. During his studies, he began to work as a reporter and presenter for radio and television. He first worked for Hessischer Rundfunk. After his entry as a reporter at their studio in Kassel, he hosted the morning show at hrXXL. After changes within the show, Hartwich hosted the shows hr3 Madhouse and 0138/ 6000. He also hosted shows at You FM. For his presentation of YOU FM Roadshow, he earned his first radio gig. He hosted the ZDF/KI.KA broadcast of TKKG – der Club der Detektive. After a short guest performance at DMAX, he became committed to the RTL Group. After various stints as a reporter at VOX, he got his own late night show on RTL, Achtung! Hartwich, for which he was nominated for the Deutscher Fernsehpreis and the Deutscher Comedypreis. In 2008, Hartwich hosted the programDas Supertalent together with Marco Schreyl. In January 2009, RTL sent him to the Australian jungle, where he was the special in the fourth season of Ich bin ein Star – Holt mich hier raus!, hosted by him. In addition, he regularly acts as a reporter for RTL, among other things for the shows Unglaublich! – Die Show der Merkwürdigkeiten and Einspruch – Die Show der Rechtsirrtümer. In 2009, he again hosted Das Supertalent and was awarded the Goldene Kamera in January 2010. In 2010, Hartwich, together with Nazan Eckes, hosted the third season of Let's Dance. He succeeded Hape Kerkeling. In 2011, he hosted with Sylvie Meisfor the first time. This was followed by Hartwichs Hockenheim-Test and the 101 Ways to Leave a Gameshow at RTL before he hosted, for the third time and together with Schreyl, Das Supertalent. In 2011, he hosted his own comedy game show on RTL, H wie Hartwich, in which Hartwich got into unusual situations and the outcome was predicted by the audience. In the spring of 2012, he hosted with Meis again Let's Dance, for which they were awarded the Bavarian TV Prize. In the summer of 2012, he hosted Total Blackout – Stars im Dunkeln. He presented the jury, along with Thomas Gottschalk and Michelle Hunziker, for Das Supertalent 2012. In January 2013, Hartwich succeeded Dirk Bach in hosting Ich bin ein Star – Holt mich hier raus!, together with Sonja Zietlow. He also moderated the game show Cash Crash and the German versions of Celebrity Family Feud and All Star Family Fortunes. Hartwich was awarded "Krawattenmann des Jahres" in 2014.
