40 years of experience in the design, supervision and management of major civil engineering projects, particularly tunnels and underground structures in Austria and abroad including Germany, Switzerland, Italy, Great Britain, Greece, Portugal, France, United States, Saudi Arabia, South Africa, India, Pakistan and Taiwan.Special knowledge in rock and soil mechanic applications for tunnels and extensive experience especially in the New Austrian Tunnelling Method (NATM). Advisor for tendering, tender evaluation and implementation of conventional and design/built contracts for conventional and TBM driven tunnels.Responsible of the independent design check for various projects in Austria and abroad.