The Firm

Heintges Consulting Architects & Engineers P.C. is an award-winning professional consulting firm specializing in the design and implementation of the building envelope.

Since our founding in 1989, Heintges has consulted on more than 200 million square feet of facades for projects throughout the U.S. and in 29 other countries. We collaborate with visionary architects and owners on some of the world’s most challenging projects, ranging in scale from super-tall office towers to individual residences. Our extensive portfolio encompasses every building type including commercial, institutional, residential, retail, and government projects. In the U.S., recent projects include Uber’s San Francisco Headquarters, The Spiral – 66 Hudson Boulevard, MoMA’s 2019 Expansion & Renovation, Nike House of Innovation NYC, Stanford University Bing Concert Hall, the National Museum of African American History & Culture, and the renovation of the United Nations Headquarters.

The expertise of our professional staff encompasses all aspects of the design and quality assured construction of custom high-performance curtain walls, specialty glazing, opaque cladding systems, exterior stonework, and structural glass. We are committed to innovation and fluency in the latest technologies, and to maintaining our expertise and quality standards in a highly collaborative office environment. Many of our firm’s senior staff members also present at international conferences and lecture at academic institutions including Columbia and Rice University.

Heintges has offices in New York City and San Francisco. Our Manhattan office houses an extensive library and collection of enclosure materials, including more than 5,000 glass samples, to support our work and ongoing research in the field of enclosure design.



Robert Heintges, FAIA, is the Founding Principal of Heintges Consulting Architects & Engineers P.C. (Heintges), and, with over 40 years of experience, is a recognized authority on the design and implementation of the curtain wall. Mr. Heintges is also an Adjunct Professor of Architecture at Columbia University’s GSAPP. He has contributed his extensive knowledge on curtain wall theory and practice and environmentally responsible design to numerous publications and organizations and has collaborated with many of the world’s foremost architects. 


Areta Pawlynsky, AIA, has overseen complex facades in the United States, Asia, and the Middle East since joining the firm in 1991. Ms. Pawlynsky is interested in exploring the energy efficiency, technical capabilities, and design potential of cladding materials and systems. Her work has included the assessment and renovation of historically sensitive facades, as well as the execution of new enclosure walls. Ms. Pawlynsky holds degrees from University of Illinois and Columbia University in architecture and historic preservation.


John Pachuta, AIA, has been involved with the design and construction of innovative enclosure systems throughout North America and Asia since joining the firm in 1995. His areas of expertise include complex facade geometry, structural glass design, blast mitigation and on-site inspection and testing. He has advised various government agencies on revisions to codes and specifications for enhanced envelope performance. Mr. Pachuta holds degrees in architecture from the University of Virginia and Columbia University where he has served as an Adjunct Associate Professor of Architecture teaching courses in building technology.


Karen Brandt, AIA, leads the West Coast office in San Francisco and joined the firm in New York in 2001. Ms. Brandt has expertise in facade design and engineering of headquarters and campus buildings for visionary organizations and cultural institutions combining architectural excellence, comprehensive approaches to sustainability, enhanced resilience, and analysis and measurement of building performance and occupant comfort. Ms. Brandt holds degrees in architecture from the College of Environmental Design at the University of California, Berkeley and the Harvard Graduate School of Design.


Daniel Vos, AIA, has been collaborating with architects and owners in New York and around the world since joining Heintges in 2004. With expertise in glass design and building envelope performance, he regularly presents and contributes at international glass and facade conferences, focusing on goals of better performance, resiliency, and sustainability. Mr. Vos studied architecture in both Paris and New York, and completed his master’s degree at Columbia University GSAPP, where he is now teaching as an Adjunct Assistant Professor of Architecture.


David Bott, PE, SE, AIA, joined Heintges in 2006, and holds bachelors’ degrees in both civil engineering and architecture from Carnegie Mellon University, as well as a master’s degree in civil engineering from Columbia University. In addition to his extensive experience with custom-designed building enclosure systems, Mr. Bott is also well-versed in the design and engineering of special structures including structural glass, cable nets, and tensioned membranes. Mr. Bott has taught building systems integration in Columbia University’s GSAPP and sits on the ASCE 7-22 Wind Loads Subcommittee. 


Jamison Guest, AIA, has contributed to the technical design and construction of complex facades in the U.S., Asia, and the Middle East since joining Heintges in 2007. His project portfolio includes bespoke enclosures for flagship retail, as well as custom, unitized curtain wall for new construction and re-clad applications. Mr. Guest holds a master’s degree in Architecture from Columbia University, and currently serves as a facade consultant studio critic at the University of Pennsylvania’s Graduate level design program.


Jessica Young, RA, has collaborated on complex, high-profile facades across the U.S. since joining Heintges in 2005. Ms. Young has extensive experience managing academic & cultural projects with a focus on marrying building envelope performance with the Architect’s aesthetic vision. She is excited about opportunities to integrate opaque materials into facade design to meet the challenges of increasingly stringent energy codes, sustainability initiatives, and occupant comfort. Ms. Young holds a Masters degree in Architecture from Columbia University’s GSAPP.


Sharif Khalje, AIA, is a Principal at Heintges. Since joining the firm in 2012, he has managed the technical design and execution of large institutional complexes, office and residential towers, multiple museums, and private residences in the U.S. and Asia. He has worked with many of the world’s leading architecture firms, has published works on architecture, and has lectured at Cornell University and RPI. He has also received awards from Columbia University and the American Institute of Architects. Mr. Khalje holds a Master of Architecture degree from Columbia University’s GSAPP.