This Memorial Day, we honor and remember the brave men and women who made the ultimate sacrifice in service to our country. At Pennoni we are grateful for their courage, dedication and selfless commitment to protecting the freedoms we enjoy each day. Wishing everyone a safe Memorial Day as we take time to reflect on and honor those who served. #WhyPennoni
Pennoni
Engineering Services
Philadelphia, PA 23,198 followers
Partners for What's Possible
About us
Since our founding more than five decades ago, our clients trust Pennoni’s commitment to elevating the impact of projects on our communities. By partnering with our clients, we establish relationships that create trust and longevity. We approach the start of every project as the beginning of a collaboration. With the rapid change in technology, our clients know they are getting innovative methods in delivering quality services for smart, sustainable, and resilient solutions. We are relentless in our aim to bring fresh perspective and new technologies. Pennoni measures achievement in innovation, efficiency, and excellence. Our milestones are bigger than any one project; and every project affects the community, no matter how large or small. As partners, our clients know they are getting the attention and dedication they need to achieve their goals. The footprint of our work may be large, but our focal point is not just on where, but on how. We dedicate ourselves daily to client service, to giving back to the community, and to nurturing the entrepreneurial spirit of our employee-owners. As a multidisciplinary firm, Pennoni has the ability to approach engineering challenges from a wider spectrum of angles than most. Our combination of talent and experience generates unprecedented solutions for diverse and iconic projects around the globe.
- Website
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http://www.pennoni.com
External link for Pennoni
- Industry
- Engineering Services
- Company size
- 1,001-5,000 employees
- Headquarters
- Philadelphia, PA
- Type
- Privately Held
- Founded
- 1966
- Specialties
- Civil/Site, Energy & Sustainability, Environmental, Geotechnical, Construction Services, Landscape Architecture and Planning, MEP, Government, Structural, Survey & Geomatics, Transportation, Water/Wastewater, Water Resources, Construction Engineering, Planning, and Landscape Architecture
Locations
Employees at Pennoni
Updates
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Celebrating 60 years of Pennoni through the people who turn collaboration into impact. We’re concluding our video series with what Pennoni means to our people, as our staff reflects on the experiences that shape their work every day. It’s about meaningful work, a supportive culture and the creativity and problem-solving that drive us forward. #WhyPennoni
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Pennoni is pleased to announce the appointment of Mark T. Celoni, PE, as executive vice president and chief growth officer. In this newly established role, Mark will lead Pennoni’s firmwide growth strategy, aligning client development, marketing and business development efforts across all practices and regions. With more than 35 years at Pennoni, Mark brings deep institutional knowledge and a collaborative leadership approach that will help strengthen our growth culture and continue delivering exceptional value to our clients and communities. Congratulations, Mark! Check out the full news here: https://lnkd.in/eSWZuQp3 #WhyPennoni
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Episode 5 of Pennoni's What’s Possible Podcast is here! In this Earth Day-inspired episode, our host, Robert McGee talks with Betsie N. Hiatt, Associate Vice President, Pennoni’s environmental manager and practice lead, about the environmental challenges facing Florida’s growing communities and the role engineers play in protecting natural resources. Drawing on more than two decades of experience, Betsie shares lessons from her career, including how hurricanes have shaped her perspective on #sustainability and #infrastructure. As Betsie notes, “Great projects start with understanding the environment.” Listen to Episode 5 to hear how environmental expertise helps turn challenges into opportunities. See the full episode here: https://lnkd.in/eSkMTC3W #WhyPennoni
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We are hiring at Pennoni We are proud to support a culture built on collaboration, mentorship and meaningful work that strengthens the communities we serve. Interested in joining our team? View open roles here: https://lnkd.in/g5gj67kE #WhyPennoni
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Meet our May Employee Spotlight: Samantha Hall! Sam is a digital asset specialist in our Philadelphia, PA office, supporting Pennoni's PFX and corporate communications teams. She specializes in 3D modeling, photogrammetry and digital asset management, turning technical plans into compelling visualizations. A graduate of Drexel University, Sam joined Pennoni as a co-op student and now manages the firm’s OpenAsset database. From projects like the I-95 CAP to marketing initiatives across the firm, Sam combines creativity and technical expertise to showcase Pennoni’s innovative solutions. Want to learn more about Sam and how her work helps bring Pennoni’s projects to life? Check out the full spotlight here: https://lnkd.in/ei_Q-StJ #WhyPennoni
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What does it take to rebuild after a storm changes everything? In the next episode of Pennoni's What’s Possible Podcast, Betsie N. Hiatt, Associate Vice President shares how environmental expertise and thoughtful planning are helping communities recover and prepare for the future. Stay tuned. #WhyPennoni
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Big ideas, curious minds and a glimpse into the future! Our office was filled with energy as we welcomed the next generation for Take Your Child to Work Day. From fast-paced PPE relay races to hands-on fun with catapult builds and soil profile desserts, the day was all about learning by doing. A highlight of the day for many was the drone demonstration, giving a real look at how innovation is shaping our work in the field. Thank you to everyone who joined us and helped create such a memorable experience. We loved sharing what we do with our Pennoni family! #WhyPennoni
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As Safety Week comes to a close, the message carries forward. At Pennoni safety is not limited to a single week, it’s a continuous commitment that shapes our work, our decisions and our culture year-round. Thank you to our teams for leading by example and prioritizing safety in everything you do. Let’s continue building on this momentum in the weeks ahead. Together, we plan ahead, take ownership and follow through. #WhyPennoni #ConstructionSafetyWeek #SafetyWeek2026
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Safety starts with people, and the impact reaches beyond the workplace. During Take Your Child to Work Day, our Philadelphia office hosted a PPE relay race, giving the next generation a hands-on look at why safety matters in everything we do. Our health and safety specialists, Peter Vogric, ASP and Kate McGee, CSP, helped highlight an important message: safe habits are learned early and reinforced everywhere, from your home to the job site. It’s a reminder that safety is not just a policy, it’s a shared responsibility. #WhyPennoni #ConstructionSafetyWeek #SafetyWeek2026
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