ETH Zurich, Executive in Residence, responsible for the subjects of construction managemen in underground construction and project management of large infrastructure projects

DB Ltd, Berlin / DB Netz Ltd, Frankfurt upon Main
Head of Competence Center Major Projects 4.0 at DB AG, responsible for project acceleration, partnership-based project collaboration, digitization of construction projects

DB Netz Ltd, Frankfurt upon Main
Head of management major projects, head of the responsible organizational unit for the central control of the large-scale project portfolio of the now decentralized large-scale projects

DB Netz AG, Frankfurt upon Main
Head of major projects, head of the organizational unit responsible for client representatives for the portfolio of major projects at DB Netz Ltd.

Owner of Heinz Ehrbar Partners Llc

Vice Chairman of the Board of Directors of Swiss Tunnel Holdin Ltd.

AlpTransit Gotthard Ltd., Chief Construction Officer
responsible for the project planning and execution of all civil construction work for the 57 km Gotthard Base Tunnel and the northern access routes.
Member of the Executive Board

Elektrowatt Engineering Ltd, Hydropower Division
Project manager, senior construction manager and project engineer (rock mechanics, hydraulics, feasibility studies, tenders) in the project planning and construction of several hydropower plants in Switzerland and abroad

German Tunnelling Committee (DAUB)
since 2016: Member as a representative of the owners organsisations

Swiss Society of Engineers and Architects (SIA)
since 2020: Member of the digital transformation specialist council

RWTH Aachen
since 2014: Lecturerer for organisation of underground work

International Tunnelling and Underground Space Association (ITA)
2004 – 2016: Animator of Working Group 19 (Conventional Tunnelling).

Swiss Tunnelling Society, 2004 – 2016: member of the board
(2004 to 2010 Head of the Swiss Tunnel Congress department)

Journal Geomechanics and Tunnelling, 2009 – 2016: Member of the advisorary board.