Our Leadership

Dr. John Bryant

Founder & CEO
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Todd Wolf

Principal building envelope expert
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Dani Ittner

Principal Architect
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Dr. Jeff Fitzgerald

President & Chief Operating Officer
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Hayden Fischer

Principal Engineer & Chief Technical Officer
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Austin Muck

General Counsel & Chief Business Officer
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Dr. Yasser M. Abdelhamid

Director of Engineering
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Dr. Amr Helal

Manager of Forensic Engineering-CO
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Dr. Jeong Yeon Cheon

Professional Engineer
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Jeff Garrison

Building Envelope Director
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Steve Egly

Director of Insurance Services
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Dr. M. Kabir Hossain

Director of Geotechnical Engineering
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Chris Tony

Professional Engineer
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Michael Drexler

Building Enclosure Specialist
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Rendon Reith

Professional Engineer
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Dr. Jens Figlus

Senior Coastal Engineer
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ENGINEERS | SCIENTISTS | ARCHITECTS

Copyright 2023 Bryant Consultants Operating LLC –  Carrollton, TX – All Rights Reserved 

John Bryant, Ph.D.,
P.G., P.E., CPG, D.GE, M.ASCE, F.PTI

Dr. John Bryant is the principal in charge of all engineering operations including forensic, geotechnical, geo-structural, and geophysical modeling and testing.

Dr. Bryant coordinates the operations of the company with other affiliated technical experts when required. He has provided expert witness testimony in over 300 arbitrations and court cases over the past 25 years.

Dr. Bryant’s expertise includes soil-structure interaction, geophysics, and hydrological modeling. Noteworthy projects include Millennium Tower, State Highway 130, and Allen Eagle Stadium.

Todd Wolf

Todd Wolf has managed the design and renovation of municipal, commercial, retail, and healthcare facilities for over 25 years.

He is experienced in condition assessments, roof evaluations, roof replacement design, materials installation, and air barrier systems testing. He oversees field testing, building envelope investigations, and facilitates communication between clients, contractors-manufacturers-consultants to define sustainable and cost-effective solutions.

* A Nexus BEC LLC Operating Employee

Dani Ittner

Dani Ittner has over 20 years of experience as an architect, with more than five years focused on building envelope design.  She is a technical thinker, providing envelope design consulting, energy code analysis, and Independent Technical Reviews for Architects, Owners, and Contractors. 

She oversees all aspects of design work produced by our sister company, NEXUS, including detailing, thermal and hygrothermal modeling, specifications, and permitting.

* A Nexus BEC LLC Operating Employee

Jeff Fitzgerald, Ph.D.

Dr. Fitzgerald is an experienced strategic advisor and business operations leader with a diverse background in research, teaching, consulting, and business management.

Dr. Fitzgerald’s 35-year career includes oil and gas exploration, ecological resource management, environmental engineering, remote sensing and geophysical investigation, geologic and geotechnical services, facility and infrastructure asset management, business and finance advisory services, and operations.

As President and Chief Operating Officer, Dr. Fitzgerald directs the business of Bryant’s forensic and risk analysis engineering and architecture lines of business.

Hayden Fischer, M.S., P.E., P.G.

Hayden Fischer has been with Bryant for over six years and has more than eight years of experience in civil and geotechnical engineering.

His background is in hydrogeology and geotechnical engineering, and he has served as a lead expert in numerous cases in these fields.

Mr. Fischer’s expertise also includes electrical resistivity profiling, ground-penetrating radar, groundwater monitoring and sampling, geospatial analysis and remote sensing, slope stability, expansive/collapsing soils, and automated remote monitoring.

He is proficient in EVS, GIS applications, MODFLOW, HYDRUS, and various programming languages including R, Python, and C++.

Austin muck

As Bryant’s General Counsel and Chief Business Officer, Austin Muck handles Bryant’s legal matters, oversees forensic litigation projects, and identifies and pursues areas of strategic growth. 

Prior to joining Bryant, Mr. Muck earned a B.S. in civil engineering from Texas A&M University and a law degree from SMU.  After law school, he practiced law at Bracewell LLP, where he represented businesses in a variety of commercial disputes and worked with numerous expert witnesses.

Yasser M. Abdelhamid, Ph.D.,
P.E., M. ASCE

Dr. Abdelhamid performs work on a wide range of geotechnical and geophysical forensic projects, from single family homes to whole subdivisions and commercial buildings, stability analysis for various earth slopes and retaining and sheet pile walls, as well as forensic analysis of a wide range of pavement projects, including highways.

Among Dr. Abdelhamid’s specialties are the evaluation of soil-structure interaction, including pavements, foundation analysis and design, retaining wall design and analysis, slope stability, and soil dynamics.

His expertise encompasses expansive soil behavior, geotechnical engineering and design, numerical modeling of soil-structure interaction and geo-structural elements, construction materials evaluation and analysis, and geotechnical laboratory testing.

Dr. Abdelhamid has authored and co-authored numerous publications. His research includes a comprehensive parametric study on laterally loaded single piles using a finite element package ANSYS as well as LPILE and a transient fully-coupled numerical pore-scale model utilized to study soil-fluid interaction problems such as surface erosion, fine particles migration, and liquefaction.

Dr. Abdelhamid also works in academia as an adjunct professor teaching Soil Mechanics and Foundation courses for undergraduate and graduate students.

Dr. Amr Helal, Ph.D., P.E.

Dr. Helal has nearly twelve years of experience in civil and geotechnical engineering. He is adept in numerical analysis, using PLAXIS 2D, 3D, Slope/w, Apile, Lpile, Slide, Settle3D, MSEW, and GRLWEAP.  

Dr. Helal performs geotechnical lab and field testing, prepares proposals and geotechnical reports, and tackles complex forensic geotechnical problems, working on multi-disciplinary projects and managing teams with multi-disciplinary backgrounds, such as structural engineering, architecture, and hydrology.

As a part of his Ph.D., Dr. Helal performed numerical analysis (PLAXIS 2D) to study the effect of storm cycles on the performance of embankment structures, such as dams and levees, using probabilistic approaches and neural networks to develop a user-friendly tool that helps decision makers allocate rehabilitation budgets based on risk. He has worked on several geotechnical projects funded by agencies such as ALDOT, NC DOT, and The Department of Homeland Security.

Jeong Yeon Cheon, Ph.D., P.E.

Dr. Cheon has over 14 years of industry experience in geotechnical engineering. She has hands on experience in various stages of construction, including early-stage survey planning, site investigation, detailed design and construction support. 

Dr. Cheon’s geotechnical specialties cover shallow and deep foundations, pipe-soil interactions, slope stability, integrated geological-geotechnical study, and probabilistic geotechnical engineering. She has numerous professional publications in addition to industry experience.

JEFF GARRISON, P.E.

Jeff Garrison boasts a remarkable 25-year career dedicated to the investigation, design, and repair of roofing, waterproofing, and exterior cladding systems. His expertise spans various exterior wall systems, low-slope roofing systems, architectural and structural metal panel systems, and steep-slope roofing solutions. With extensive knowledge in below-grade waterproofing, encompassing hot-fluid applied systems, single-ply membrane systems, and bentonite waterproofing, Mr. Garrison is a seasoned authority in the field.

In addition to his project experience, Mr. Garrison excels in performance and diagnostic testing of the building envelope. He provides invaluable contract administration services and conducts quality assurance observations on new and existing structures. Furthermore, his contributions extend to renovation design services, litigation support, and peer review services, offering a comprehensive skill set tailored to a wide range of projects. With a wealth of experience and a commitment to excellence, Mr. Garrison is a pivotal asset to our team.

Steve Egly

Mr. Egly has thirteen years’ experience in estimating cost of repair for damaged property for first party and third-party claims, as well as reported theft, fraud, and arson losses as required to state and industry agencies. 

 He has extensive experience with multi-state claims handling including ISO and Texas based policies of insurance and spent four years in regional management level positions over staff and independent adjusters, performing case reviews, quality assurance and monitoring, coaching/training sessions, and evaluating personnel, in addition to insurance specialization in national catastrophe and/or foundation claims handling.

 Mr. Egly assists Professional Engineers in the evaluation and preparation of residential soil-structure interaction assessments and serves as Bryant’s liaison/contact with insurance company personnel for investigation requests, status of projects, and overall quality control.

M. Kabir Hossain, Ph.D.,
P.E., CEng., CMar.Eng.

Dr. Hossain has over 25 years of wide-ranging geotechnical consulting experience in offshore oil and gas and onshore, including forensic geotechnical failure analysis of soil-structure interactions of complex foundations.

Dr. Hossain’s expertise in applied geotechnics covers the full spectrum of soil mechanics and foundation engineering, from classical to novel concepts. 

He maintains extensive numerical modeling and analysis experience of soil-structure interactions using PLAXIS,  ABAQUS, ANSYS, SLOPE/W etc. Dr. Hossain has served as a subject matter expert in geotechnics, including design and analysis of shallow and deep foundations, slope stability, soil deformation, soil-structure interactions, soil properties interpretation, and site characterization and reporting. 

He has authored and co-authored numerous publications (most recent in 2020), and he has worked in academia as an adjunct professor teaching undergraduate geotechnical and foundation courses.

Dr. Hossain is a Charted Civil Engineer (UK) and a licensed Professional Engineer (Texas).

chris tony, P.E.

Chris Tony is a Forensic Engineer and performs work on a wide range of geotechnical and geophysical forensic projects, from single family homes to whole subdivisions and commercial buildings, stability analysis for various earth slopes and retaining and sheet pile walls, as well as forensic analysis of a wide range of pavement projects, including highways.

He manages projects, coordinates with clients, and analyzes and solves real-life issues. Chris earned both his BS and MS in Civil Engineering from Southern Methodist University.  His expertise includes expansive soil behavior, geotechnical engineering and design, interaction and geo-structural elements, construction materials evaluation and analysis, and geotechnical laboratory testing.

Michael Drexler

Michael’s technical expertise has been shaped by his ground-up building envelope background and natural ability to grasp concepts quickly. He has 15 years of experience in the building science industry, including extensive training in building forensic investigations.

Michael’s unique perspective comes from being a building envelope consultant, contractor and roofing manufacturer technical representative.

Rendon rieth, P.E.

Rendon Rieth is a civil and geotechnical engineer, holding both a B.S. and an M.S. in Civil Engineering from the University of Arkansas. With expertise in both laboratory and field testing, Rendon excels in contributing to comprehensive geotechnical reports and crafting innovative solutions to complex issues.

Rendon has honed his skills in project management, site investigation, and fieldwork testing, becoming a proficient leader in the field. His areas of specialization include pavement evaluation, slope stability, subsurface modeling, geospatial analysis, and expansive and collapsing soils. His dedication to understanding the nuances of geotechnical engineering makes him a valued member of the Bryant team and a trusted resource for navigating complex projects and delivering effective solutions.

Jens Figlus, PH.d.

Jens Figlus is a coastal engineering expert with 12 years of experience. He is working with Bryant on expert witness cases and projects related to sediment erosion, coastal flooding, water waves, fluid-soil-structure interactions, and issues related to ship-induced hydrodynamics such as vessel wakes and propeller wash. His background is in applied coastal research and engineering, hydraulic engineering, and environmental fluid mechanics.

Dr. Figlus is an Associate Professor in the Ocean Engineering Department at Texas A&M University. He heads the Coastal Engineering Laboratory (CEL) on A&M’s Galveston Campus and is a distinguished partner with the A&M Institute for a Disaster Resilient Texas (IDRT).

His expertise includes field and laboratory measurements (piezo-electric, acoustic Doppler, sediment tracer, optical backscatter, laser anemometry, remote sensing) as well as process-based numerical modeling (CShore, XBeach, Delft3D, Funwave) related to nearshore and estuarine hydrodynamics, water waves, ship wakes, sediment transport, morphodynamics, and nature-based solutions for coastal risk reduction.