Leadership Team

Barbara Thayer, PE, RA, LEED AP

Founder & President
Ms. Thayer has established a multi-disciplined firm that combines architecture, engineering, survey and landscape architecture; providing clients with the benefits of an integrated design approach. Ms. Thayer founded B. Thayer Associates in 1990 and has over 30 years of experience as a licensed architect and engineer. As Principal-in-Charge on nearly all of the firm’s architectural and engineering projects, Ms. Thayer maintains regular contact with direct staff concerning on-going project operations, production of deliverable drawing & design plans, reviews and the approval of all cost data prior to client submission. She continues to provide strategic direction for overall company initiatives.
B. Thayer Associates Management Team’s talents compliment Ms. Thayer’s leadership and perpetuate her vision.

Kevin C. Papasian, PE

Vice President, Engineering

Kevin has extensive management and engineering experience on various projects for municipalities, state agencies, and private clients.

He has worked on and managed transportation projects, including roadway, and traffic, waterfront resilience projects, water and wastewater projects, petroleum industry projects, site development projects, utility projects, and various construction projects.

Kevin has past experience with the SCDPW, NYSDOT, NCDPW, various towns, many fortune 500 companies, and developers throughout Long Island and the Tri-State region.

Charles Steinhilper, LS

Vice President, Land Surveying/Mapping
With over 38 years of experience, Charles is a licensed professional land surveyor in New York and Connecticut. His practical and technical expertise in a wide range of disciplines makes him a versatile professional in engineering, surveying, construction, and mapping within government, commercial, institutional and private sectors. He is knowledgeable in computers, Autodesk Civil 3D, ESRI ArcGIS, and internet-based GIS applications. Charles possesses the requirements for adaptability that both office and field environments demand for various projects that the imperfect science of surveying can be used to perfectly map our world.
Daniel Maher, VP of Landscape Architecture

Daniel Maher, RLA, ISA Certified Arborist

Vice President, Landscape Architecture

Daniel is a New York State Registered Landscape Architect and ISA Certified Arborist with over 7 years of experience in site design and project development of residential, commercial, and urban design projects. His experience leading, supporting, and coordinating with colleagues has resulted in the successful development of projects from conceptual design through construction. Daniel has extensive experience in the field of arboriculture and has led projects on various scales ranging from individual tree risk assessments to large scale infrastructure projects spanning miles and comprising over 5,000 trees. Daniel’s experience in site inspection before, during, and at completion of projects, has developed a focus to technical details and solving complex design issues during construction, which have reduced change orders and schedule delays.

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