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100+ years of combined Industry experience 

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Todd M. Kilduff, PE 

Owner/President

Todd Kilduff is founder and President of Kilduff Underground Engineering, Inc. (KUE). He has over 25 years’ experience in underground design and construction, serving as both a Contractor and Engineer on large tunnel, trenchless and various other underground projects such as deep shafts, large site excavations and mining facilities. His ability to be equally familiar with the design and construction aspects of underground projects allows him to be efficient in the design and execution of providing construction oversight. As president, Mr. Kilduff oversees all aspects of the business including business development, project management and office administration.

Todd earned a degree in Civil Engineering from the Ohio State University in 1996, followed by a masters degree in Geotechnical Engineering from the Virginia Polytechnic Institute in 2000. Todd is currently licensed in CO, WY, TX, MT, MA, NY, NJ, PA, VA & FL and is verified through NCEES.

Meet the KUE Team


Sean Sundermann, PG, CEG

Principal/Vice President

Sean Sundermann is Vice President and Partner with KUE.  He has 18 years of industry experience focused on trenchless technology & tunnel design, geohazard analysis, planning and execution of geotechnical site investigations and management of pipeline projects. With KUE, Sean is responsible for business development, proposal and project management. Sean earned a degree in Geological Sciences from the University of Colorado in 2000, followed by a masters degree in Structural Geology in 2002. He has professional Geologist licensure in CA, CO, WY, UT & TX and is a Certified Engineering Geologist in CA.

Michael Tinney, PE

Project Engineer

Mike is a Project Engineer at KUE who offers a diverse skillset in underground design, geo-structural and construction inspection. He has been involved w/ the design of tunnel initial support systems, excavation support & geo-structured support systems. Additionally, Mike has extensive experience in the planning and execution of subsurface investigations and laboratory testing programs.

Mike received an undergraduate degree in Environmental Science in 2009 from the University of Leeds in West Yorkshire, England, and a masters degree in Environmental Science & Engineering from the Colorado School of Mines in Golden, Colorado, in 2011. Mike is a licensed P.E. in CO and UT.


Paul Wilkinson

Senior Microtunneling Consultant

Paul Wilkinson has 31 years of experience with trenchless and microtunneling projects worldwide.  Formerly serving as General Manager for Iseki Euro, Mr. Wilkinson consulted and provided microtunneling equipment to Todd to facilitate numerous microtunneling projects throughout the United States. Paul has personally overseen the installation of over 120 KM of microtunnel, on over 200 projects in 35 countries. With KUE, Paul provides consulting on complex microtunneling and trenchless projects as well as pursues business development efforts.

Shrey Arora, EI

Staff Engineer

Shrey is a Staff Engineer at KUE, specializing in the design and implementation of dewatering systems for the support of underground structures. He is proficient in the use of Rocscience RS2 & RS3, Carlson, UDEC, Matlab, Rocklab, Examine 2D, and COMSOL. Shrey has modeled tunnel initial support, final lining & excavation support systems as well as ground water and slope stability problems.

Shrey received his undergraduate degree in Mining Engineering from the National Institute of Technology in Karnataka, India in 2012, and completed a master’s degree in Mining Engineering at West Virginia University in 2014. Shrey also earned a masters degree in Underground Construction and Tunneling from the Colorado School of Mines in 2018.


Wenpeng "Frank" Liu, PhD

Staff Engineer

Dr. Wenpeng “Frank” Liu, PhD brings vast experience in mining, tunneling and geotechnical engineering to the firm. Upon receiving his PhD, Frank worked as a research assistant at the Colorado School of Mines managing research projects and leading research teams before working as a field engineer on the renowned Purple Line Extension project in Los Angeles, CA. He is familiar with laboratory testing of soils, exploration for site conditions, and field inspection.

With a heavy focus in Mining Engineering, Frank received his undergraduate degree in 2010 and a masters degree in 2012 from the China University of Mining and Technology (CUMT) in Xuzhou, China and his PhD from Penn State University in 2017. 

David Agan, EI

Staff Engineer

David is a Staff Engineer at KUE, responsible for performing design calculations for trenchless technologies and support of excavation. He is also responsible for modeling of support of excavations, and the visualization and drafting of tunnel alignments and geotechnical data for reporting and presentations. David graduated from the University of New Hampshire (UNH) in 2016 with an undergraduate degree in Civil Engineering.

Sean Harper

Survey & Instrumentation Specialist

Sean is the lead for all Survey & Instrumentation projects at KUE. His duties involve the planning,  installation and monitoring of survey points on active KUE job sites. Sean brings experience using various types of survey instruments and techniques, including boundary, Lidar, ALTA, topo mapping and construction staking surveys. His knowledge using Total Stations, GPS & Base Stations, as well as digital and auto levels enhances and expands KUE's I&M departments skillset. 

Sean received his undergraduate degree from the University of South Florida in 2001 and is in the process of earning his Certified Survey Technician certification (CST).

Kyle Scanlan

Marketing/Office Manager

Kyle is the Office & Marketing Manager at KUE. With a background in Sales Training and Marketing, he brings a unique and diverse skillset to the KUE team. Kyle received his undergraduate degree in Multimedia & Graphic Design from Champlain College in Burlington, VT in 2008.