Ralf Maier
Dipl.-Ing. (FH)
Landscapearchitect BDLA, IAKS

1985 – 1988 Training as a gardener
1994 – 1995 gardener school in Cologne Auweiler
1995 – 1999 Diploma at the University GH Essen
2000 – 2002 Freelancer for various offices
2002 – 2007 Partner in the office ambientes Cologne / Ratingen
From 2008 own office in Cologne


Member of the following committees:

Association of German Landscape Architects (bdla): Working Group Economics, Spokesperson Tourism and Leisure (bdla nrw). Forschungsgesellschaft Landesentwicklung Landschaftsbau e.V. (FLL), committee leader “Skate- und Bikefacilities” and “MTB Facilities”, member of the rules committee “Sportplatzpflege”. Expert for skate and bike equipment.




David Welter
Dipl.-Ing. (FH)
landscapearchitect, qualified playgroundinspector

2003 – 2008    study Landscape Architecture, GHS University Duisburg-Essen and Technical College Berlin Diploma (FH)
2009 – 2017 employment in various offices
2014 qualified playground inspector acc. FLL BSFH
Since June 2017 employed at maierlandschaftsarchitektur





Balint Rosner

2008     graduation
2008 – 2011     Bachelor of Business Administration (BBA) University of West Hungary
2012 – 2018 study Landscape Planning and Landscape Architecture University of Natural Resources and Life Sciences Vienna Master of Science
Since March 2019 employees at maierlandschaftsarchitektur



Daniel Branchereau

2010     graduation
2011 – 2018 study Architecture Bergische Universität Wuppertal Master of Science
2019 Intern at maierlandschaftsarchitektur
Since May 2019 employee at maierlandschaftsarchitektur





Christine Langsdorf

1977 – 1979   training office assistant
1979 – 2018 transcriptionist, secretary and clerk in various companies

Since 2018 employee at maierlandschaftsarchitektur





Mattia Maier
Assistent Management

Since May 2019 employed at maierlandschaftsarchitektur







Rodrigo Jose VidalesFoto-Rodrigo_sw_NEU
Argentine architectural completion

2011 High School (Argentina)
2012-2019 studied architecture at the National University of Cordoba, Argentina
2015-2019 designer at the BMX Association of Cordoba (ACBMX)
2018-2019 Freelance designer in Argentina

Since October 2019 employed at maierlandschaftsarchitektur





Julia Kassung
Dipl. Designerin (FH)

Since November 2019 employed at maierlandschaftsarchitektur






Peter “Dietsches” Diepes Dietsches_3

  • Skateboarding since 1976
  • trained carpenter
  • Ramp builder since 1989: e.g. Münster / Dortmund Monster Mastership

Since May 2017 Freelancer at maierlandschaftsarchitektur



Since January 2009 at maierlandschaftsarchitektur