It was David’s entrepreneurial spirit and enthusiasm that started PZS Architects. Early in his career he developed a network of contacts and a reputation for responsibility and consistency. It was natural that he would leverage this spirit into his own practice, teaming with Mario Zacharjasz to found the firm in 1993. David is known to the office and to clients as a dedicated and sensitive designer with a great eye for details and the ability to take every stakeholder’s needs into consideration. His honest passion for his work has endeared many clients with whom he has made lasting friendships. David’s more than 25 years of professional experience have included the planning and design of large-scale retail shopping centers as well as historic preservation and adaptive reuse projects, where he is particularly adept at breathing new life into old or outdated buildings. David received his Bachelor of Architecture degree from Temple University.

A partner in PZS Architects since 1998, Michael guides the firm’s design philosophy with his critical thinking and penchant for organization. His keen understanding of programming and planning gets every project off to a strong start and he provides leadership and guidance to staff at all levels of experience in the firm. Michael’s professional experience has included higher education, pharmaceutical, institutional, and corporate projects, as well as designs for high-end multi-family residential projects. Michael earned a Bachelor of Architecture degree from Temple University, he is an AIA National Strategic Council Bethune Fellow, and is a former President of AIA Pennsylvania. He also served as a representative to the AIA National Strategic Council from 2018 – 2020, and was a member of the AIA National Committee for Equity, Diversity, and the Future of Architecture and the AIA National Taskforce for Climate Action. Michael is a member of the Society for College and University Planners.

Recognized by many as the face of PZS Architects, Mario Zacharjasz exudes an energy that inspires the firm and its clients. His passion for architecture and caring for others is evident in his thoughtful designs and extensive community and professional involvement. His 30+ years of experience include an emphasis on educational, multi-family housing, and civic architecture for clients ranging from the School District of Philadelphia to the Army Corps of Engineers. Born in Cuba, Mario moved to the US when he was 3 and continues to maintain strong ties to his heritage and the local Latin American community.

Mario is committed to serving the Latino community in the region. He supports many non-profit organizations, focusing his energy on community outreach and sustainability, and encourages his partners, staff, and colleagues to do the same. Mario is Chair of the Tyler School of Architecture Board of Visitors and currently serves on the boards of The Philadelphia Art Commission and the Delaware River Waterfront Corporation.

Mario also served as President of the Philadelphia Chapter of the American Institute of Architects, and was Chairman of the Board for the Greater Philadelphia Hispanic Chamber of Commerce, where he oversaw the creation of the first ever The State of Hispanic Business Report for the Greater Philadelphia region. Mario holds a Bachelor of Architecture degree from Temple University. Mario has also completed post baccalaureate Business Executive Program at Dartmouth College’s Tuck School of Business and is a Goldman Sachs 10k Small Business Graduate.

Mike brings an eclectic background to his practice of architecture. He has been a teacher, an archivist, and a builder. His experiences inform his interest in construction. Mike enjoys building furniture, and restoring his new (very old) Arts and Crafts style home in Mt. Airy. It’s a true labor of love. As a true outdoorsman, Mike likes to ride his bike and paddle his handmade canoe on the Schuylkill and Wissahickon.

Shawn’s architectural education and design experience inform her placemaking strategies. She approaches each project with an understanding of the impact of design on user experience. Shawn even applies her placemaking strategies when working on her 1905 Manayunk twin-home — her friends describe it as a “cozy, antiquarian paradise”. When she is not in the office, Shawn enjoys hunting for treasures at flea markets, spending time in the garden with her husband, and planning for new travel adventures.

Ray has been practicing architecture for more than 25 years, almost exclusively within the Higher Education Market Sector. He has a particular expertise in student life facilities including student centers, residence halls, and student dining, completing more than twenty-five such projects over the last fifteen years. Ray delivers value and inspires his teams through thoughtful, well-crafted design solutions. He believes that great spaces are a result of designing with the user’s point of view in mind, and that good design can inspire creativity, collaboration, and collegiality.

When he is not in the office, Ray enjoys spending time with his family, chasing after his dogs, and renovating his family’s more than two-hundred-year-old farmhouse.

Rob comes to PZS with over 24 years of experience in different market sectors, ranging from multi-family residential, to higher education, and hospitality. He has worked all over the country from Atlanta to Las Vegas but has made Philadelphia his home for almost 20 years. Rob takes a highly collaborative approach to each design issue, often stating that problems are just opportunities to explore. He believes that sustainable practices should be included in every phase of design, and that documentation and construction are natural extensions of that design process. When not in the office, Rob enjoys spending time with his wife Kelly and their 5 children. Rob and his family travel to Vermont every year to unplug and unwind. He likes watching zombie movies and going on walks with his mini-schnauzer, Pepper.

If the devil is in the details, then Kim is the angel of our office. She knows the IBC code like the back of her hand. When she’s not in the office perfecting her Revit model or developing a more efficient workflow, you can find her hunting for her next-best local flea-market find or shopping for a new pair of shoes. Kim is a card-carrying member of the Free Library of Philadelphia, and as an avid reader she still checks books out. Kim moved to Philadelphia for college after growing up in rural PA. She graduated from Philadelphia University and has made the city her home ever since. Kim resides in Rittenhouse Square, and loves spending time in her garden. (Her tomatoes are delicious, and lucky for us, she is kind enough to share them with the rest of the office.)

Originally from Philadelphia, raised around a construction and a restaurant background, Steven quickly understood the importance of focusing on fine details. He holds a master’s in advanced studies in collective housing from the Polytechnic University of Madrid and the Swiss Federal Institute of Technology in Zurich. He obtained his Bachelor of Architecture degree from Temple University and has worked professionally in the Philadelphia market for most of his career. He believes that the social and cultural aspects of design impact the users involved and should be a driver for design whenever possible. When not in the office, Steven is active in the martial arts community in Philadelphia, and is also often looking for other dojos to train or compete at in the cities he visits.

Nolan is originally from Nebraska and found his way to the East Coast via his graduate studies at Syracuse University. With over a decade of experience working on a variety of projects, he has developed a strong love for design through a focus on details and building science. He stays focused during the workday by throwing on headphones and listening to metal. 

While not in the office, he enjoys spending time in the kitchen, cooking a wide variety of cuisines for his wife and friends, including home-style Japanese food. His hobbies related to victuals extend to fermenting experimentations as well as home bartending. He also has a love for the outdoors, spending a great deal of time riding his self-built bike, running, camping, and walking his older but still spunky greyhound. Indoors, he enjoys the meditative side of life with yoga. 

Sean has been an architecture professional for over 10 years across residential, commercial and institutional disciplines. A Philadelphia area native with degrees from Temple University and Drexel University, he sees buildings as storytellers, and his role as an architect to help add worthwhile volumes to an already rich library. Everything from larger design gestures to particular assembly decisions can be aligned to clarify and convey the humanity of a client, the residents, the users and passers-by.

Outside of the office, Sean looks to stay curious about stories well-told in other mediums: in music, movies, books, art – or seeking the stories to be found in new places. He finds these interests paired best with Schuylkill-side bicycle rides or long drives with a coffee, his partner Michelle, and their two dogs.

Cristina obtained a Bachelor’s Degree in Interior Design from Universita’ degli Studi di Napoli in Naples, Italy. Upon graduating, she started her career in Italy focusing on residential interior renovations and adaptive reuse. In 2017, Cristina moved to Philadelphia where she earned her Master’s Degree in Architecture from Temple University. When she’s not in the office, Cristina enjoys playing tennis, spending time with her dog, and taking long walks exploring the city.

Vahe worked at PZS Architects a decade ago and rejoined the firm in 2023. He is a Temple University Bachelor of Architecture School Graduate and has continued his studies in the arts with classes at the Philadelphia Academy of Fine Arts and The University of the Arts. Vahe’s 25+ years of experience with several Philly architectural and engineering firms reaffirmed a niche for him between art and architecture. Vahe has skills in technical detailing CD’s and always strives to bring art back to architecture. His color palette borrows both from the rich architectural history of Philadelphia where he has lived since 1979, to his culture and heritage in the Middle East and Armenia. Vahe has a love for classical music, painting, and graphic design, and never tires of exploring the mixed cultural fabric of the city of Philadelphia.

Julian grew up in the suburbs but has made a home for himself in Philadelphia. He worked at PZS while completing his studies in Drexel University’s 2+4 Architecture program and is now a full-time Architectural Designer. Julian’s schedule keeps him busy, but in those precious moments of free time he enjoys experiencing live music with friends, as well as exploring the city in search of a new and interesting places to eat. His food adventures have taken him to an ever-growing list of interesting neighborhoods throughout the great city of Philadelphia and he looks forward to finding that next great little spot.

Keaton is a Richmond, Virginia native who completed both his Bachelor’s and Master’s degree at the University of Virginia. He enjoys exploring new urban and natural areas both at home and abroad, documenting them through sketches in his sketchbook. His travels have taken him all around the US as well as to Winneba, Ghana, and Lisbon, Portugal for both work and play. Having worked previously in construction and abroad, he continues to pursue new and unique design perspectives to incorporate into his work at PZS.

Kristie is a Jersey Shore native but moved to Philadelphia to receive her Bachelor’s degree in Fine Arts and Design at the University of the Arts. It was during a research trip to Florence, Italy, when she knew she would pursue a career in the world of architecture and design. Kristie graduated with her Master of Architecture at Temple University in 2023. When she’s not in the office you can find her planning the next dinner party or hosting tailgates at the Lincoln Financial Field and rooting for the Philadelphia Eagles.

With a degree in Architecture and wide-ranging experience in the A/E/C Industry, Glenn leads the firm’s marketing efforts with a high level of expertise and enthusiasm. In his spare time you might find Glenn wandering through the woods with his wife, exploring the outdoors and seeking out new and more challenging mountain trails. He’s also been known to play a (mostly) friendly game of tennis with his friends, or you might find him and his wife (and his trusty rescue pup Penny) just hanging out on the back patio. Glenn and his wife have recently embraced empty nesting with winter holiday trips to warm places like South America and Mexico and plan to do a similar trip every year.

Courtney is a Montgomery County native and a graduate of West Chester University. She manages the firm’s finances as well as an ever-expanding variety of daily operational responsibilities. Courtney and her rescue dog Jackson, AKA the Mayor of Fishtown, enjoy long walks in the neighborhood, gathering up biscuits from all of Jackson’s favorite neighbors- including the mailman, and they love spending time on the banks of the Delaware and hiking the trails of the Wissahickon. Outside of her busy life in the City, Courtney loves to travel with friends. With recent trips overseas to Lisbon, Ireland, Turks and Caicos and Puerto Rico, as well as a few more “local” trips to New Orleans, Savannah, San Francisco, and Yellowstone, Courtney enjoys immersing herself in different cultures in the US and all over the world.