New York, NY (May 13, 2026) – Perkins Eastman, the global design practice, announces that Alkis Klimathianos, AIA, has been named Co-Managing Principal of its New York studio, joining Rachel Birnboim, AIA, LEED AP BD+C, Assoc. DBIA, in leading the firm’s flagship office. The appointment reflects Perkins Eastman’s continued investment in the depth and breadth of its New York design practice. Klimathianos brings extensive design leadership experience to the position and has played a central role in building the firm’s commercial practice in New York.
“We are thrilled to welcome Alkis to our New York leadership team alongside Rachel, marking an exciting new chapter for the studio,” said Nick Leahy, Co-CEO of the firm. “Our leadership model is intentionally designed to balance practice expertise with collaboration across disciplines, and this transition strengthens our ability to support continued growth and innovation in New York while delivering exceptional design for our clients and communities.”
“I am deeply honored by the trust our leadership has placed in me, and I look forward to building on the exceptional foundation Rachel has cultivated. Perkins Eastman’s unwavering commitment to human-centered design and the creativity of this team position us to lead at a remarkable moment for our industry — one where meaningful collaboration across practice areas has never been more essential. I am proud of what we are building together and genuinely energized by what comes next,” said Klimathianos.
Birnboim continues to lead high-profile work across healthcare, higher education, senior living, and housing in addition to leading the studio and external industry roles. She recently accepted a two-year tenure as Vice Chair of the Executive Committee of the New York Building Congress, underscoring her prominent role in the city’s broader design and construction community. Together, Klimathianos and Birnboim bring complementary expertise spanning commercial, civic, and institutional practice.
“Alkis is a trusted friend and colleague, and I’m looking forward to our partnership in this role. Our different perspectives and practices complement each other, allowing us to lead with vision, collaboration, and curiosity in support of our shared goals for the studio,” said Birnboim.
The firm also recognized Jean Gath, LEED AP, who served as Co-Managing Principal during a pivotal period of transition for the New York office. Gath will continue to lead significant client work, with deep expertise in programming and planning across Higher Education, Arts and Culture, and other sectors.
For media inquiries, please reach out to: news@perkinseastman.com.