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Jessica Clifford, PE
Partner / President
Jess joined the firm in 2006, after completing her Bachelor of Science in Architectural Engineering from Drexel University. Over the past 18 years she has developed an expertise in building facades and a passion for historic preservation. She brings extensive knowledge and professionalism to every client relationship and continues to manage many of the firm’s larger critical projects. Jess has expertise in a variety of project types, including historical restoration, adaptive reuse, and building envelope design and repair. She is a Board Member of the Delaware Valley Association of Structural Engineers’ Women in Structural Engineering (WiSE) Philadelphia. Jess also serves on two committees as a member of the Carpenters’ Company of Philadelphia. As a female engineer in a leadership role, she strives to set a good example to the other female engineers at JBCI and in the industry. Jess lives in Ardmore, Pennsylvania with her family and spends her free time chasing around her two boys, planning family vacations, and enjoying a good beach read.
Erik Villari, PE
Partner / COO
Erik joined JBCI in 2006 and has advanced from Project Engineer to his current position of Principal, where he has taken on a leadership role to aid in the development of younger engineers. He is licensed in New Jersey, Pennsylvania, New York, Delaware, Maryland, Virginia, Vermont, and South Carolina, and continues to pursue licensure in additional states. During his time at JBCI, Erik has focused on existing structures, with work ranging from assessment and repairs, to large-scale renovations. Erik is always looking to expand his knowledge and develop new and customized solutions to the unique problems found when dealing with older and historic structures. Erik likes cooking, especially with his pizza oven, and is a lifelong Giants fan living in Eagles country. Erik lives with his wife and two daughters in Collingswood, New Jersey.
Joseph Philips, PE
Principal, Director of Engineering
Joe joined the firm as a Project Engineer in 1993. His professional experience ranges from the design of new structures to the repair and restoration of existing structures. He has been the Project Manager for design, documentation and construction administration on rehabilitation projects, structural and exterior façade investigations, parking garage investigations and forensic studies. He was promoted to Director of Engineering in 2011, and most recently Principal. He is an avid curler, traveling around the world with multiple teams for curling events with his girlfriend, Cindy. They live on the Main Line with their dog, Penny.
Allen Roth, PE
Strategic Advisor
Allen Roth, PE joined JBCI as a Project Engineer in 1984 and advanced to Vice President in 1992. In 2015, Mr. Roth assumed the responsibilities of President. His experience includes structural design and analysis of reinforced concrete, structural steel, masonry, and light gauge steel of both new and existing structures. However, his expertise is in the field of building envelope, water abatement and building technology. He has been the Project Manager for design, documentation, and construction administration for the Structural Condition Evaluation and Repair and Building Façade projects.
Colleen Boulden
Senior Project Manager
Colleen began her career interning with our firm before entering her senior year at the University of Delaware. She has over 14 years experience in the assessment, repair and restoration of existing building exteriors. She is responsible for evaluating and identifying exterior building element deficiencies and developing repair details required for each building system. Colleen oversees the investigation, design, and construction implementation of each of her projects and also manages the younger engineers through each of these processes. Colleen is an avid Philadelphia sports fan. She lives in Wilmington with her husband and her three daughters, who keep her very busy.
Michael Salera, PE
Senior Project Manger / Chief Drone Pilot
Mike joined our firm after completing his Master’s degree from Villanova University. He has extensive experience in structural analysis and design. He has analyzed many construction types with his problem-solving skills being utilized on both new construction and rehabilitation projects. Mike is also the chief Drone Pilot responsible for establishing and maintaining a system of continuous development and training, manages the pilot’s activities and assists in façade condition surveys. Outside of the office, Mike stays active, training in jujitsu and Olympic Weightlifting. He also enjoys spending time watching horror movies with his wife and two dogs at their home in Collingswood.
Ken DeStefano, PE
Project Manager
Ken joined JBCI after completing a Bachelor of Science (BS) and a Master of Science (MS) in Civil Engineering from Johns Hopkins University. He is responsible for managing all phases of a project, ranging from investigation, design, through construction administration. He specializes in structural evaluation of historic construction types, parking garage investigations, and above and below grade waterproofing design. Ken is also an ICC certified Special Inspector for structural steel and post-installed concrete anchors. Outside of the office, Ken stays busy competing in triathlons and enjoying the Manayunk dog parks with his wife and dog, Walter
Amanda DelColombo, EIT
Project Manager
Amanda joined JBCI in 2022 with 7 years of civil engineering experience in the transportation field. She has a BS in Civil Engineering from the University of Delaware and a MS in Civil Engineering from Kansas State University. She is responsible for assessing and evaluating exterior building element deficiencies, developing construction documents, and overseeing repairs. Amanda is an enthusiastic Philadelphia Eagles fan and enjoys going to concerts, watching reality tv, and trying new restaurants with her husband.
Tyler Logar, EIT
Project Manager
Tyler joined the JBCI in 2018 following the completion of a Bachelor of Science degree in Civil and Environmental Engineering from Rowan University. Notably, during his time at Rowan, he showcased leadership as the captain of the men’s soccer team for three years. At JBCI, Tyler focuses on building envelope restoration projects ranging from assessment and repairs, to extensive structural rehabilitation.Tyler is an EIT, and is licensed as a remote drone pilot and a Level 1 Thermographer. Tyler is actively involved in the Community Association Institute (CAI) and the Sealants, Waterproofing ,& Restoration Institute (SWRI) demonstrating his commitment to community and the involvement in the construction restoration industry. Tyler lives in Clarksboro, NJ with his wife, Lauren, their daughter, Mia, and dog, Nova. Beyond his professional endeavors, Tyler enjoys camping, playing soccer and golf, traveling, and spending time with friends and family.
Austin Papp, EIT
Senior Project Engineer
Austin joins JBCI after working as a structural engineer for a global engineering firm focusing on commercial and large-scale residential design projects. Austin completed a Bachelor of Science degree in Civil and Environment Engineering at Rowan University and primarily focused his studies on concrete, steel, wood, and gauge metal. Austin is an avid golfer and enjoys playing 18 holes on the weekend and taking golf trips with friends. He also has a strong travel bug and is working on a bucket list of exciting and unique US and international destinations.
Rebecca Gavin, PE
Senior Project Engineer
Rebecca first joined the company in 2019 as an intern and enjoyed the work so much she returned after getting her Civil and Environmental Engineering bachelor’s degree from Rowan University. Within her three years with JBCI, Rebecca has continued logging her experience as an Engineer in Training (EIT), acquired a drone pilot license, and has been certified to ride swing scaffolding. While she finds all the jobs she works on exciting, her bread and butter are the historic structures that help JBCI preserve a piece of the nation’s history. When Rebecca is not ogling over some beautiful old building she can be seen playing piano, pickleball, or watching a Mets game/F1 race. Rebecca has moved back to her home state of New Jersey in the newly crowned ‘central’ region.
Taylor LaFountain, EIT
Project Engineer
Taylor joined JBCI as a Project Engineer in 2023. She graduated from Drexel University with Bachelor of Science degrees in Civil and Architectural Engineering. She recently earned her Engineer in Training certificate after graduating. Taylor enjoys the outdoors and hiking. She loves exploring National Parks and hopes to visit all of them one day.
Joshua Pizzillo, EIT
Project Engineer
Joshua joined JBCI after graduating with a B.S. in Civil and Environmental Engineering from Rowan University in the spring of 2023. His studies largely focused on structural engineering, through which he gained experience with steel, reinforced concrete, foundation, and bridge design. Additionally, during his time at Rowan he worked as an undergraduate research assistant, through which he gained increased exposure to concrete design. He is currently an Engineer in Training (EIT) and is looking forward to getting his professional engineering license during his career!
Dylan Tague
Project Engineer
Dylan joined JBCI as a Project Engineer in 2024. He graduated from Drexel University with Bachelor of Science degrees in Civil and Architectural Engineering with a focus in Structures. Dylan is an avid outdoorsmen who spends a lot of time walking, biking and occasionally paddleboarding. His goals for the near future of his career is to become a Certified Drone Pilot and obtain his Engineer in Training Certification.
Daniel Olaya
Engineering Intern
Danny joined JBCI in 2025 as an intern while completing his Civil Engineering degree at Rowan University, with graduation expected in December. He is passionate about structural restoration and building envelope work, and approaches each project with curiosity, a strong work ethic, and a growing foundation in both engineering design and field observation. Outside of engineering, Danny enjoys resistance training, outdoor adventures, and exploring topics in wellness and personal development. As a family-oriented Colombian-American, he values a strong sense of community and respect, bringing these principles into his perspective and work in the field
John McCardell
Chief Financial Officer
John joined JBCI in 2016 and is a member of our leadership team. His broad expertise encompasses leadership, financial and administrative management, spanning financial reporting, financial metrics, benchmarking, and budgeting and forecasting. John holds a critical role in shaping data and creating reports that are a big part of our strategic decision-making process. If you require assistance with billing matters or any administrative needs to support our clients, you can expect to hear from John. He earned a Bachelor of Science in Accounting from Rowan University and graduated Magna cum Laude in 2010. Outside of work, John's wide array of hobbies reflects his versatile personality. He values quality time with his family, which includes his wife, Devon, their two daughters, Kingsley and Phoenix, and their beloved English Bulldog, Lucy. Additionally, John is passionate about gardening, movies, and music. He upholds an active lifestyle with a commitment to exercise, maintains an interest in video games, and enthusiastically but sometimes frustratingly engages in the game of golf.
Matt Dixon
Marketing Coordinator
Matt joined JBCI in 2025 after a decade of experience across diverse industries, including military public affairs, higher education, hospitality and tourism, and the architecture, engineering, and construction sector. Based in Philadelphia, he specializes in developing winning proposals and strategic marketing initiatives, seamlessly blending creativity and design in his work. A military veteran and award-winning photographer, Matt has a passion for visual storytelling, particularly through street photography that captures the essence of his city. In his free time, he enjoys cycling, photography, and playing hockey.
Tina Brooks
Administrative Assistant
Tina joined the firm in 1985 working for Mr. Callaghan. Tina manages the firm’s administrative and physical resources in the office. Her role also includes a wide range of technical support tasks from contract administration to risk management. She is the friendly voice you hear when calling our office.
Joseph Philips, PE, Principal