Mojo Stumer Associates promotes Yacobellis to partner

Greenvale, NY According to Mojo Stumer Associates, a leading Long Island-based architecture and interior design firm, longtime senior associate and director of design Joe Yacobellis has been promoted to partner. 

Since joining the studio in 2014, Yacobellis has played a central role in shaping the firm’s portfolio of high-end residential work, commercial developments, and mixed-use projects across Long Island, New York City, Hamptons, Miami, and beyond. His promotion reflects both his design talent and his commitment to advancing the firm’s modern architectural vision. 

“I’m truly honored to be in this position,” said Yacobellis. “For nearly five decades, Mark and Tom have established a standard of design excellence that has made Mojo Stumer one of New York’s most respected architecture firms, and I’m humbled to help lead the practice into its second generation.” 

Known for his collaborative style and strong mentorship, Yacobellis has become a key voice within the studio, guiding project teams and helping cultivate the next generation of designers. His ability to balance design expression with technical precision has earned him recognition and respect both inside and outside the firm. 

“Joe has been a central force in our design culture for many years,” said Mark Stumer, founding principal of Mojo Stumer Associates. “His clarity, creativity, and dedication to our clients make him an exceptional leader. I am excited to enter this next chapter with him as Partner.” 

The promotion comes at a moment of strong momentum for Mojo Stumer and Mojo Stumer Interiors, as the firm continues expanding its presence across the region with new residential projects, mixed-use developments, community-focused projects, and a large commercial presence. 

“Our team is extraordinary, and the culture we’ve built is one where everyone in our studio works toward a shared vision for the future of Mojo Stumer,” said Yacobellis. “We’re collectively dedicated to upholding and advancing the firm’s renowned reputation, and to continuing to serve our clients through exceptional design.”