GALL ZEIDLER CONSULTANTS - Key Persons


Amit Sahay

Job Titles:
  • Office Lead and Technical Director

Dominic Reda

Job Titles:
  • Member of the Management Team
  • Partner
  • Company Partner
Dominic Reda is a Company Partner of Gall Zeidler Consultants. He leads GZ's office in New York, New York and is responsible for several of the company projects within the North American and South American markets and supports the efforts of GZ's London office. Over his 13+ year career, Mr. Reda has been involved in a number of national and international tunneling projects with responsibilities ranging from project management and design of tunnels and underground structures, independent design checks, evaluating impacts due underground construction on existing infrastructure, tunnel excavation and support inspection, to waterproofing and final lining inspection. Mr. Reda's global experience includes projects within the United States, Canada, South America, United Kingdom, North Africa, and Asia. His experience includes projects in hard rock, mixed-face and soft-ground designed with segmental linings (TBM), shotcrete and rock reinforcement (SEM/NATM), traditional slope stability measures, cast-in-place and/or shotcrete final linings for shafts, station caverns, running tunnels, pedestrian tunnels, and cut-and-cover tunnels, and pre- and post-construction ground improvement measures.

Dr. Kurt Zeidler - Founder

Job Titles:
  • Co - Founder
  • Member of the Management Team
  • Principal
Dr. Kurt Zeidler is a principal and co-founder of Gall Zeidler Consultants. He is primarily responsible for projects in the UK, European and Asian markets and is based in GZ's main offices in London. Dr. Zeidler has over 40 years of experience in geotechnical engineering, tunnel design and design checks for underground construction. Dr. Zeidler is frequently called upon as an expert advisor on tunneling and geotechnical projects worldwide and has worked extensively in the United States, Europe, North Africa, Australia and Asia. His primary expertise lies in the design of modern support systems and excavation techniques for tunnels, caverns, and complex underground stations. Dr. Zeidler is an expert in conventional tunneling, TBM and cut-and-cover methods and is familiar with their execution in hard rock, mixed-face, and soft soil conditions. Education Doctor of Philosophy Geology and Engineering Geology, University of Salzburg

Dr. Vojtech Gall - Founder

Job Titles:
  • Co - Founder
  • Member of the Management Team
  • Principal
  • Senior Tunnel Engineer
Dr. Vojtech Gall is a principal and co-founder of Gall Zeidler Consultants. He leads GZ's North American headquarter in Ashburn, Virginia and is primarily responsible for GZ's North American and South American markets. Dr. Gall has over 30 years of experience in the design, construction, and construction management of tunnels and underground structures. His expertise encompasses soft-ground, mixed-face, and rock-tunneling utilizing Mechanical (TBM), conventional tunneling (SEM/NATM), and cut-and-cover excavation methods. Dr. Gall frequently serves on expert review panels dedicated to the investigation and improvement of tunneling schemes and advises on all stages of design development. He has provided peer review services on a wide variety of facilities, ranging from hydropower schemes in remote settings to complex transit structures in urban settings.

Eileen Gall

Job Titles:
  • Marketing Manager

Elmira Riahi

Job Titles:
  • Senior Geotechnical Engineer

John Rudolf

Job Titles:
  • Chief Engineer, Tunnels and Bridges

Lane Boyd

Job Titles:
  • Senior Tunnel Engineer

Marie Valenza

Job Titles:
  • Technical Administrator - Office Manager

Milenko Chaparro Nikolic

Job Titles:
  • Senior Tunnel Engineer

Mithun Sarkar

Job Titles:
  • Technical Director - Structures

Nasri Munfah

Job Titles:
  • Member of the Management Team
  • Principal
Nasri Munfah is a co-owner and a Principal of Gall Zeidler Consultants. He is responsible for the development and implementation of the firm's strategic long term growth plan in tunneling and underground construction business across the Americas. He provides technical leadership in business development, strategic pursuits, project delivery, and drive growth and professional development of staff.

Neil Moss

Job Titles:
  • Technical Director - Tunnels

Nikolaos Syrtariotis

Job Titles:
  • Senior Tunnel Engineer

Roland Tockner

Job Titles:
  • Senior Superintendent Tunnel

Sadadcharam Easwaran - COO

Job Titles:
  • Director of Operations

Samantha Neff

Job Titles:
  • Project Controls Manager

Thomas Klingenberg

Job Titles:
  • Senior Tunnel - Structural Engineer

Thomas Martin

Job Titles:
  • Senior Tunnel Engineer

Timothy O'Brien

Job Titles:
  • Senior Geologist

Toru Higuchi

Job Titles:
  • Technical Director - Geotechnical

Walter Klary

Job Titles:
  • Senior Tunnel Engineer

Wolfgang Kreiner

Job Titles:
  • Senior Tunnel Engineer

Yuan Le

Job Titles:
  • Senior Civil - Structural Engineer