Gerard A. Holker
SVP, Operations
Gerard Holker is responsible for the operational performance of all telecommunications structured cabling installation projects. His work includes managing scheduling, manpower and closeout administrative functions associated with projects. Mr. Holker has developed and implemented standardized operating procedures to ensure positive job performance while integrating cross functional business units into a cohesive operating team.
As Director of Operations and Chief Operations Officer at previous start-up structured cabling companies, he developed, refined and implemented operational policy and procedures.
Mr. Holker spent 24 years at Citigroup as Vice President of Operations and Technology, managing, designing, developing and implementing unique solutions for critical financial systems and with a singular focus on providing clients with premier information delivery and financial services.
He brings a vast array of management, telecommunications and networking experience. Mr. Holker's broad background in technology project management, development, end user liaison/support and experience with facilities/construction management complements his role as head of operations.
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Jefferson Leinberger
Lead Project Manager
Jeff Leinberger has worked in the capacity of Lead Project Manager for the past seven years. Mr. Leinberger has been involved in communication and security system design and applications for the past decade. Additionally, he has extensive security consulting experience in the fields of Site-Surveys, Guard Service Organization and Operations, Executive Protection, and Total System Integration. He has worked throughout the United States and at several locations worldwide.
Mr. Leinberger's role is to provide lead project management services for our larger Security & Telecom projects. He has traveled extensively both domestically and overseas in support of Security By Design’s worldwide clientele. Mr. Leinberger is currently completing a digitally based global security network that provides centralized system control over corporate LAN/WAN communication systems.
Mr. Leinberger has been instrumental in the design, orchestration and implementation of several large projects including the HIP Headquarters, Associated Press Headquarters, Amaranth, LLC, Vonage, The Rudin Organization, and on-going projects for Home Box Office. He is the point man for all customer liaisons, and provides on-site supervision to ensure all projects meet their stated goals on time and on budget.
Mr. Leinberger received a Bachelors Degree in Economics from Swarthmore College and an MBA in Finance from the University of Chicago. He has undergone additional training in Software House, Vicon, Cardkey, Bosch, and American Dynamics.
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Robert DiMarco
New Business Development / Sales / Project Management
Robert DiMarco began his career with Security By Design and Wireworks Business Systems in 2001 as a field technician, becoming a certified product installer and learning the skills necessary from the ground up for success in the telecommunications and security industry. He quickly moved through the ranks and began managing large scale projects for some of our most valuable clients, from an eighteen floor/3,500 workstation installation at the Law Firms of Paul Weiss, Rifkind, Wharton and Garrison, to the 500,000 square-foot buildout of The Department of Environmental Protection's state-of-the-art facilities in Long Island City. He has established himself as an integral part of the Security By Design and Wireworks Business Systems teams, and is currently responsible for new business development, and Telecom estimates and proposals.
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Philip DiMarco
New Business Development / Sales / Project Management
Philip DiMarco joined our company in September 2002 after nine years working at a major Wall Street firm on the security of negotiable receipts, commodities, and other assets.
Mr. DiMarco has been an integral part of the design of the large CCTV systems at healthcare facilities throughout New York City such as St. John’s Episcopal Hospital and the New York Eye and Ear Infirmary. His expertise in the field of access control and CCTV has guided the design and implementation of many other projects as well. Mr. DiMarco’s clients include SAC Capital, McDermott, Will, and Emory, Marathon Asset Management, and Frederic Fekkai salons. In addition, he works in a national capacity with Jefferies and Company. NYCOMED US, formerly Altana Inc. and a division of Fougera Corperation, currently utilizes more than 200 card readers and cameras in its 200,000 square feet of office and warehouse space.
Mr. DiMarco is currently a member of IHASS, ASIS, and the Metropolitan Healthcare Security and Safety Director Association. Since joining Security By Design and Wireworks Business Systems, he has demonstrated his leadership abilities on many security projects such as Pronovias, New Zealand Mission to the UN, The Mexican Consulate, Babcock and Brown, West LB AG, and XL America.
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Larissa Nakon
Service Manager
Larissa Nakon began her career with Security By Design and Wireworks Business Systems in 2004 as an office assistant, progressing swiftly to more complex work in project management with service manager responsibilities.
In her current role as a service manager at Security By Design and Wireworks Business Systems, Ms. Nakon is responsible for all service and maintenance contracts with clients. She has developed and executed an efficient way of providing accurate, timely, and consistent service. As a service manager, Ms. Nakon also handles Day Two work for security, telecom and audio visual. She holds Bachelor’s degrees in Business and Psychology from The Pennsylvania State University.
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