Marchel Koster has extensive experience in the construction and property maintenance sectors, currently serving as an Opzichter NPO at Portaal since January 2023. Previously, Marchel held the position of woninginspecteur at voc vastgoed onderhoud centrale since November 2015. Marchel's career includes roles such as opzichter voor dagelijks onderhoud/mutatie at Haag Wonen, uitvoerder at Bouwbedrijf de Graaf bv, and onderhoudstimmerman at both Van der Speld Aannemers BV and Aannemersbedrijf T.H. Heemskerk. Additionally, Marchel was a mede-eigenaar at Verhoeven/Koster machinale houtbewerking and worked as a vertegenwoordiger at Würth Group and a timmerman at Aannemersbedrijf Oskam. Marchel's early career started as a winkelverkoper at Formido Bouwmarkten BV.
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