Corinna Kretschmar, managing director:

• born on november 4th., 1966 in Bielefeld
• school attendance in Detmold - high school diploma 1986
• study of art history in Würzburg 1986
  study of interior design in Detmold - degree (diploma) 1993
• employee at joehnk. Interior Design in Hamburg 1993,
  project manager 1996, head of catering trade dept. 1999
• manager of joehnk. Interior Design AG Zurich 2000
• manager of JOI-Design GmbH in Hamburg since 2003
• member of the BDIA since 2004
  
• member of the executive committee BDIA Landesverband Küste ( HH, SH, MeckPom) 2004 – 2006, today engaged in the advisory board of the executive committee BDIA LV Küste
  
• member in the architectural association Hamburg since 2004
  
• appointment to the independent inscription committee of the architectural association Hamburg / interior design department since 2007

Peter Joehnk, managing director:

• born on july 31st., 1957 in Kronach/Ofr.
• school attendance in Selb/Ofr. and Neustadt/Wstr., high school diploma 1976
• study of interior design in Kaiserslautern and Mainz, diploma 1981
• degree of correspondance course in ecological building 1983
• formation of his own company 1984
• university teaching position at the Muthesius School, Kiel (FH)
• member of the BDIA since 1982, from 2001 until 2003 appointed as a member of the executive committee of the BDIA
• delegate of the BDIA in the IFI, International Federation of Interior Designers
• approval of the ECIA (European Council of Interior Architects)
• admittance as “Member of Chartered Society of Designers” MCSD, London, 1997
• election as professional of the IIDA „International Interior Designer Association“ 1998
• member in the architectural association Hamburg since 1986, in the architectural association Bavaria since 1998 and in the architectural association Austria since 1996
• contest committee of the architectural association Hamburg 2000
• manager of JOI-Design GmbH in Hamburg, self-employed since 1984
• appointment to the "Konvent der Baukultur 2010"