Designs and engineers electronic security solutions, including burglar and fire alarms, video surveillance, access control, and integrated systems. Creates plans, wiring diagrams, estimates, programming guides, installation documentation, and customer recommendations. Calculates wiring, power, network, and mounting requirements; develops panel programs; produces quotes; and supports project teams, technicians, customers, and junior designers. Uses AutoCAD, BlueBeam, Microsoft Dynamics 365, Experlogix, and related technical tools.