Helfenstein has studied at KS Kaderschulen St. Gallen in Wirtschaftsingenieur between 1993 and 1995, then at Fachhochschule Nordwestschweiz FHNW in Maschinenbau between 1986 and 1989.
Helfenstein worked for Angenstein ESTECH AG as Geschäftsleiter between Apr 1995 and Jul 2019, for Landis+Gyr AG as Leiter Fertigungssteuerung between Jan 1989 and Mar 1995.
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