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The qualifications and acquired experience of our staff are among our greatest assets. Our teams are uniquely qualified to provide dynamic solutions to challenging projects. They are trained to produce the most efficient and economical structural solutions for our clients. Specialized personnel and equipment are assigned to each project to ensure optimal results. Our firm is thoroughly equipped to service projects in diverse locations. 

  • Sheng Shi, P. E., LEED- Partner

    Sheng Shi, P. E., LEED- Partner

    Principal-in-Charge of Design

    "Many of our new projects are the result of ongoing relationships and referrals from existing clients. Our project management has been critical to the success of YAS particularly in today’s market. We will continue to be proactive, acting as advocates for our clients and maintaining our close collaboration with all consultants on the team."

    Sheng has twenty years of professional experience in the design, engineering and construction of commercial, institutional, education, and historic preservation projects from conception to close-out. He possesses exceptional communication tools, leadership and unique inter-personal skills to foster smooth teamwork between the design team, owners and contractors. For Sheng, the key to a successful job is the combination of communication and coordination, collaboration, integration of the most effective new technologies and meticulous documentation as well as comprehensive support during the project execution through completion.

    Met 2 · Met Square · ParkLine North & South Apartments · Cornell University Stocking Hall Addition & Renovation · SUNY Fredonia New Science and Technology Center · Adler Center for Nursing Excellence at Ramapo College of New Jersey · Burchfield Penney Art Center at SUNY Buffalo State · 121st Police Precinct Station House


  • Susan C. Bacas, P.E. - Partner

    Susan C. Bacas, P.E. - Partner

    Managing Principal, New York Office

    "While some other New York City Public School kids wanted to grow up to be teachers, I wanted to grow up to build schools.  Being groomed and trained by Ysrael Seinuk for almost 30 years, I will always value the good fortune I had to learn from the best and achieve my highest goals."

    Susan is a home grown New York City talent.  Educated in the New York City Public School System and receiving her Bachelors and Masters Degrees from Columbia University, she has been visiting New York City construction sites since her teenage days.  Her years at YAS have given her broad-based experience designing buildings, renovations and rehabs, bridges and roadways.  Susan has particularly extensive expertise in the design and rehabilitation of educational buildings for both K-12 and Higher Education as well as transportation structures.  

    PS 343M, Peck Slip School · 70 Pine Street · Grand Central Station Renovation · SUNY Buffalo Jacobs School of Medicine & Biomedical Sciences · Novo Nordisk USA Headquarters NYMEX, One North End Avenue



  • George Ozga, P.E. - Partner

    George Ozga, P.E. - Partner

    Principal, Commercial & Institutional Buildings / Construction Management

    "A Structural Engineer brings the highest value to a project when he can provide an efficient structure that supports and respects the architectural intent.  Helping the architect and the owner attain their ideal vision for the project is exciting and satisfying no matter what the challenge."

    George has a comprehensive background of over 30 years of experience in all phases of project design and supervision including engineer, architect and contractor relationships from project inception to completion. He joined Ysrael A. Seinuk, P.C. in 1987.  George’s project experience includes high-rise reinforced concrete hotel and residential buildings, institutional and industrial buildings, schools and health care facilities.  

    Bronx Behavioral Health Campus · Hampton Inn Times Square · Bronx County Hall of Justice · Farmingdale State College New Campus Center · Coney Island Commons · DEP Newtown Creek · The Chapin School Expansion · Chelsea Stratus



  • Jaime M. Ocampo

    Jaime M. Ocampo

    Principal, High-rise Concrete Design Specialist (Retired)

    "Structural design is not just making a structure stand.  Design should be innovative, always incorporating the latest materials and technologies to create an optimal and economic structure."

    Jim’s Project portfolio, the product of 39 years of experience nationwide and abroad, includes high-rise buildings, health care facilities, parking structures, theaters and sports stadiums.  In his more than 32 years in New York City, he has designed projects that have received multiple awards form professional organizations such as the American Council of Engineering Companies (ACEC) and the Concrete Industry Board (CIB).  Jim’s work reflects the fact that he loves the challenge that every new project brings and always looks forward to pioneering innovative structural solutions. 


    785 Eighth Avenue · O14 Dubai · Loft 2 Miami · Cancun Airport Control Tower · Steiner Studios, Stages 10-15 & Steiner Kent Stages · The Charles, 1355 First Avenue · POD Hotel Times Square · Hilton Garden Inn, 45 East 33rd Street · Ocean Dreams, 3514 Surf Avenue, Brooklyn · Manila Flair Towers, Philippines



  • Damian E. Monteiro, P.E., LEED AP

    Damian E. Monteiro, P.E., LEED AP


    Mr. Monteiro joined the firm in March 2006.  He is responsible for completing and coordinating all aspects of design; designing steel and reinforced concrete elements, while incorporating seismic and wind analysis; specification review and detail development; providing technical support for construction and field issues; and review of shop drawings for contracts currently in construction.

    South Beach Psychiatric Center Residential Building· CUNY BMCC Fiterman Hall · Hunter’s Point South Campus · PSCH East 165th Street Residence · Riverhead Middle and Riverhead High School Additions · PS 14X Addition · Bronx Behavioral Health Campus · 51 Astor Place · MTA Regional Bus Command Center