Van Havermaet
Dietert Gielen is the owner of Excellissimo, a service delivery organization. Dietert also serves as the Director Business Controlling at Van Havermaet Groenweghe. Prior to these roles, Dietert was the Managing Partner at Conessence, specializing in controlling. Dietert has experience as a Finance Manager at Hitachi Data Systems and as a Senior Auditor at KPMG Audit. Dietert holds a Master's degree in Applied Economics from UHasselt.
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