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 Bikeanlagen”, member of the rules committee “Sportplatzpflege”. Expert for skate and bike equipment.




Julian Heidrich
B.Eng. (FH)

2006   graduation
2008 – 2013 studied civil engineering at the University of Applied Sciences Konstanz
2012 – 2015 structural engineer at if_group
Since 2015 study of Rescue Engineering (Master) TH Cologne
Since April 2016 employed at maierlandschaftsarchitektur


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 2016 employed at maierlandschaftsarchitektur





Christopher Kintrup
B.Eng. (FH)

2009     graduation
2011 – 2016 study Landscape Architecture Hochschule Osnabrück for the Bachelor of Engineering
2013 intern at maierlandschaftsarchitektur
Since July 2016 freelance employee at maierlandschaftsarchitektur
Since 2015 participation in different Skate-Aid projects on the spot.

David Echner

2014 graduation
2015-2018 study architecture and urbanplanning Universität Stuttgart Bachelor of Science
Since March 2019 intern at maierlandschaftsarchitektur