2025 LEADERSHIP PROMOTIONS
Our leadership team continues to grow and expand. Join us in congratulating these outstanding professionals on their promotion to an elite level in our industry.
Senior Principals
Principals
Associate Principals
Senior Associates
Associates
Senior Principals
Click on each individual to learn more.
Rob Adams, PE, CPESC
Senior Principal
Dallas, TX
Leader of Langan’s Dallas office, and go-to engineer for clients in multiple sectors: residential, K-12, higher education, and quick-service restaurants
Caryn Barnes, LSRP, PG
Senior Principal
Philadelphia, PA
Environmental leader in the Northeast
and recognized PFAS expert
Kyle Bogardus, PE
Senior Principal
Houston, TX
Leader of the firm’s Houston office who established Langan’s growing presence in Texas
Michael Burke, PG,
CHMM, LEED AP
Senior Principal
New York, NY
Environmental practice leader in New York specializing in brownfield and renewable energy redevelopment and linear construction
Mark Devaney, LEED AP
Senior Principal
Parsippany, NJ
Leader of Langan’s national business development and marketing team that supports firm services and offices across all market sectors
Jason Hayes, PE, LEED AP
Senior Principal
San Francisco, CA
Leader of Langan’s environmental practice in California with experience on both coasts
Sam Ishak, MCSE
Senior Principal
Parsippany, NJ
Langan’s Chief Information Officer and leader of the firm’s progressive technology landscape
Paul Manzer, PE
Senior Principal
Bellevue, WA
Leader of Langan’s Pacific Northwest operations and a nationally known expert in data center land development
Michael Szura, PLA,
ASLA, LEED AP
Senior Principal
Irvine, CA
Leader of Langan’s nationwide landscape architecture + planning group with expertise in community planning, regeneration work, and sustainable design
Principals
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Sony David, PE, LEED AP
Principal
Dallas, TX
Land development practice leader growing Langan’s business in the data center, warehouse, and renewable markets across the Dallas-Fort Worth Metroplex and surrounding regions
Andy Ives, PLS
Principal
New Haven, CT
Leader of Langan’s survey teams in New England and driving force behind the firm’s regional growth in design-build infrastructure
Chris Cirrotti, PE, PP,
CME, LEED AP BD+C
Principal
Parsippany, NJ
Go-to consultant leading many large healthcare and real estate projects in New Jersey
Joe Good, PE, LEED AP
Principal
Chicago, IL
Environmental and PFAS expert leading Langan's
fast-growing Chicago office and expansion in the Midwest
Frank Holmes, PE, LEED AP
Principal
Boston, MA
Site/civil practice leader in Boston with expertise in higher-ed projects and urban, mixed-use
developments throughout New England
Brett Milburn, GISP
Principal
Bethlehem, PA
Head of Langan’s rapidly growing Applied Technologies Group, overseeing Geospatial/Geographic Information Systems,
enterprise data management, and web/mobile technology
Cory Lavoie, CHMM, PMP
Principal
Santa Barbara, CA
Leader of Langan’s Santa Barbara office and driving force behind the firm’s expansion in the Western United States and Canada
Jonathan LeBoon, PE, LEED AP
Principal
Arlington, VA
Site/civil practice leader in the Mid-Atlantic with extensive international experience working on both private and public land development projects
Keith Ottes, PE, PP, CFM
Principal
Doylestown, PA
Accomplished land development engineer specializing in industrial/distribution, residential, and commercial development projects throughout the East Coast
Danielle Sandella, CHMM
Principal
New Haven, CT
Leader of Langan’s national environmental compliance practice with expertise in multimedia compliance and permitting
Joe Taflin, PE, LEED AP
Principal
Bellevue, WA
Land development leader in the Pacific Northwest specializing in urban infill and suburban developments in the Puget Sound region
Tim Ward, PE, LEED AP BD+C
Principal
New York, NY
Leader of Langan’s United Kingdom operations handling megaprojects across several continents
Gregg Woodruff, PP,
AICP, LEED AP BD+C
Principal
Parsippany, NJ
Natural resources/permitting lead and sustainability champion with award-winning project experience
Tim Stout, PE, CPESC, LEED AP
Principal
Phoenix, AZ
Leader of Langan’s Phoenix office and an integral member of the firm’s data center, healthcare, international, and sports design teams
associate principals
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Victoria Delligatti, PHR
Associate Principal
Parsippany, NJ
Responsible for the development, execution, and oversight
of HR initiatives in support of Langan’s strategic direction
Spencer Humphrey, PE
Associate Principal
Bellevue, WA
Site/civil expert specializing in mission-critical data center developments across the country
John Hanson, PE
Associate Principal
Bellevue, WA
Site/civil expert specializing in mission-critical data center developments across the country
Sarah Amritt, PE, ENV SP
Associate Principal
West Palm Beach, FL
Leader of site/civil practice in West Palm Beach with extensive experience on complex commercial and higher-ed projects throughout Florida
Jon Hoebelheinrich, RPLS
Associate Principal
Dallas, TX
Leader of Langan’s responsive and fast-growing survey team in Texas
Tim O’Connor, PLS
Associate Principal
New York, NY
Leader of Langan’s survey practice in New York City
Kelly Tuffs, PE, LEED AP
Associate Principal
New York, NY
Site/civil practice leader whose expertise covers the full spectrum of design and construction services throughout New York City’s five boroughs
Donovan Mattole, SHRM
Associate Principal
Parsippany, NJ
Langan’s Chief Human Resources Officer directing the development and execution of the firm’s human capital strategies
Clay Patterson, PE
Associate Principal
Chicago, IL
Geotechnical practice leader for Langan’s growing team in the Midwest
senior ASSOCIATES
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David Winslow, PhD, PG
Senior Associate
New York, NY
Experienced geologist leading complex environmental projects in the New York metropolitan area
Rick Reikenis, PE,
NCEES, LEED AP
Senior Associate
West Palm Beach, FL
Respected local engineer, infrastructure expert, and former mayor and city commissioner of West Palm Beach
Art Roesler, PE
Senior Associate
Parsippany, NJ
Experienced engineer leading challenging geotechnical projects throughout New Jersey and New York
Jewel Chadd, RPLS
Senior Associate
Dallas, TX
Leader of Langan’s survey team in North Texas with experience managing projects across Texas, Oklahoma, Arkansas, and Colorado
Scott Franklin, PE, PLS
Senior Associate
Portland, OR
Land development expert in the Pacific Northwest specializing in large projects with complex entitlements and engineering challenges
Jenelle Taflin, PE
Senior Associate
Bellevue, WA
Site/civil practice leader in the Pacific Northwest
specializing in multi-family residential,
healthcare, retail, and data center projects
ASSOCIATES
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Andrew Chun, CHMM
Associate
Princeton, NJ
Collaborative leader providing integrated and sustainable engineering services for the development of brownfield sites
Jen Cutright
Associate
Seattle, WA
Seattle-based leader with expertise in interpreting regulatory requirements and environmental data
Carly Davis, PE
Associate
Pittsburgh, PA
Effective land development engineer
leading large warehouse and master
planning projects in Pennsylvania and beyond
Anthony Cennamo, PE
Associate
New York, NY
Skilled geotechnical engineer designing deep foundations and support of excavation systems across New York City’s five boroughs
Allie Arwady
Associate
Parsippany, NJ
Dynamic talent acquisition professional partnering with Langan leadership to expand the firm’s magnet for talent and drive growth through innovative recruitment strategies
Daniel Bosworth, PE
Associate
Parsippany, NJ
Environmental engineer with experience leading projects in the aviation, commercial, industrial, and oil & gas sectors
Chris Buttermore
Associate
Jacksonville, FL
Site/civil and transportation engineer leading the growth of Langan’s new office in Jacksonville
James Harley, PE, Assoc. DBIA
Associate
New York, NY
Reliable engineer designing high-quality civil infrastructure across New York City
Andrew Horwath, PE
Associate
Indianapolis, IN
Proven leader specializing in complex environmental investigations and remediation design in the Midwest
Kenneth Huber, PE
Associate
New York, NY
Go-to waterfront engineering expert in the New York metropolitan area
Bryan Dickerson, PE
Associate
Portland, OR
Site/civil leader of Langan’s Portland office with expertise in small-to-large land development projects in the Pacific Northwest and across the United States
Patrick Farnham, PE, LEED GA
Associate
New York, NY
Environmental expert passionate about revitalizing communities around the world
Joseph Flint, PE
Associate
Houston, TX
Experienced site/civil engineer supporting warehouse projects throughout Greater Houston
Andrew Eiland, PE
Associate
Tampa, FL
Site/civil practice leader responsible for the growth of Langan’s Tampa office
Paul McMahon, PE
Associate
New York, NY
Skilled environmental engineer conducting complex remediations and cleanup programs throughout New York City
Harrison Netz
Associate
Parsippany, NJ
Trusted engineer helping lead the expansion of Langan’s national renewable practice
BJ Parekh, PE, LSRP
Associate
Parsippany, NJ
Environmental leader with expertise
in designing and implementing
sustainable remediation technologies
Kyle Lawson, PE
Associate
Arlington, VA
Geotechnical expert licensed in seven states throughout the Mid-Atlantic and Southeast regions
Emily Mahoney, PE, CFM, LEED AP BD+C, CPESC
Associate
Austin, TX
Site/civil leader with a passion for sustainability, flood resiliency, and renewable energy
Anthony Maione, PLS
Associate
Cleveland, OH
Dedicated professional land surveyor leading projects across the Midwest
Heather McDaniel McDevitt, RPA
Associate
Santa Barbara, CA
Trusted expert leading Langan’s national cultural resource management practice
Samuel Singer, PE, LEED AP
Associate
New York, NY
Reliable geotechnical leader managing complex New York City projects in multiple real estate sectors
Matt Sipple, PLS
Associate
Parsippany, NJ
Professional land surveyor leading challenging projects throughout New Jersey
Michael Spievack, PE
Associate
Miami, FL
Experienced engineer with expertise in environmental assessments and remediation
Rafael Pina, PE
Associate
Miami, FL
Geotechnical expert leading complex land development and infrastructure projects in Florida, Latin America, and the Caribbean
Justin Ray, PE, GE
Associate
Sacramento, CA
Geotechnical engineer leading large-scale projects across Northern California
Christina Ruiz
Associate | Senior Manager L&D
Parsippany, NJ
Learning, development, and talent management lead on Langan’s HR team
Anamaris Torres Sanchez, PE
Associate
Miami, FL
Trusted site/civil engineer leading land development projects across South Florida
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