The people behind the work.
A founding team that's been together for over 25 years, with a culture built to last.
Our average technician tenure is 11 years. All founding technicians are still with the company, 25 years and counting. That continuity is the reason our clients trust us with the buildings that can't fail.
Gideon Elfassy
Chief Executive Officer
Founded Sound Specialists in 1993 and grew it into one of Chicago's most respected integration firms. Three decades later, still leading the vision behind 4S Security and the Telemetri platform.
Edward Batchelor
Chief Operating Officer
Oversees field operations, project delivery, and the systems that keep every installation on time and on standard. Decades of experience running complex integration programs across Chicago's most demanding buildings.
Leor Elfassy
Chief Revenue Officer
Drives growth, client partnerships, and market strategy, connecting the firm's technical depth to the buildings and institutions that need it most.
Hunter Johnson
Chief Financial Officer
Leads finance, planning, and capital strategy, the discipline that lets 4S invest in people, technology, and long-term client relationships without compromising on execution.
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