Our team

Meet the Sempergreen team. With more than one hundred employees in North America, Europe, China, Australia, Colombia and the Caribbean, we work enthusiastically on the developing and selling our green products every day. 

Using the following filters you can find the right contact person per country, department or product group.

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Corné van Garderen
Corné van Garderen Managing Director & Founder Tel: +31 343 539 699
Oscar Warmerdam
Oscar Warmerdam Partner-President Sempergreen USA Tel: +1-202-215-6005
Richard Hoek
Richard Hoek Partner-Operations Manager USA Tel: +1-214-797-5300
Dick Bernauer
Dick Bernauer Partner-Sales Director North America Tel: +1-301-219-4071
Callum Gowar
Callum Gowar Sales Manager Mid-Atlantic Tel: +1-540-219-9157
Joep van Vilsteren
Joep van Vilsteren Program Director Sempergreen Services Tel: +1-540-219-9157
Andrew DeJong
Andrew DeJong Sales Manager - Living Walls Toronto Tel: +1-647-213-2051
Benny Hidalgo
Benny Hidalgo Production Manager USA Tel: +1-540-219-2599
Julie Zarnowski
Julie Zarnowski Financial Affairs USA Tel: +1-540-399-5055