CO-FOUNDER

Jonathan Negreros brings years of experience in residential and commercial construction. He began his career as a laborer and advanced to project manager, developing deep expertise in complex builds and scheduling. Today, he leads with a hands-on approach, ensuring every project is executed with precision, efficiency, and an unwavering commitment to client satisfaction.

CO-FOUNDER

Bringing over 18 years of experience in construction, design, and strategic planning. With a strong background in marketing and customer relations, Derek has managed investment projects across multiple states, giving him a unique, hands-on perspective. At Warren Development, he leads business development and works closely with clients to ensure projects are delivered on time, on budget, and to the highest standards.

DESIGNER

Specializing in interior and exterior design, Gizem brings over eight years of global experience in high-end residential, commercial, and hospitality projects. With training in Türkiye and Germany, she combines a refined aesthetic with a hands-on approach from concept to execution. Her international perspective and technical expertise make her a valued member of the Warren team.

Director of Multifamily & Commercial Development

With over 15 years of experience in construction and development, Bryan Mione leads multifamily and commercial projects at Warren Development. He has managed a range of high-profile builds, including the San Diego Central Library, and brings deep expertise in construction management, scheduling, and quality control.