Siers Groep Oldenzaal B.V.
Jan-Willem Kielstra is an experienced professional in the telecom sector, currently serving as Teammanager Telecom and Projectleider at Siers Groep Oldenzaal B.V. since January 2017. Jan-Willem's academic background includes a Master of Science (MSc) in Business Administration and a Bachelor of Science (BSc) in Business Administration, both obtained from the Universiteit Twente between 2012 and 2016.
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