The Signals & Communications Engineer III is responsible for reviewing and approving signal and communication system designs, developing technical specifications, evaluating vendor equipment, and planning modifications to support safe and reliable light rail operations. This position maintains regulatory compliance documentation and applies electrical engineering principles throughout design, construction,and maintenance activities. Job Responsibilities Provides design and engineering support needed to design, construct, and maintain Metro's signals and communication systems, including all Agency fiber optic systems. Reviews and creates signal and communication system designs to ensure compliance with operational and safety requirements. Serves as the signals and communication engineering representative for major project extensions and system expansions. Creates, updates, and revises Computer-Aided Design (CAD) drawings to support engineering and construction activities. Develops and manages signals and communication projects from specification development, cost estimating, resource planning, and scheduling through project closeout. Writes, reviews, updates, and maintains design criteria, standard operating procedures (SOPs), and other technical documentation. Creates, updates, and files regulatory documentation for railroad grade crossings to maintain compliance with applicable standards. Evaluates project specifications and designs and recommends appropriate vendor products and equipment. Manages and monitors daily Missouri One-Call System and Illinois Joint Utility Locating Information for Excavators (JULIE) system notifications to support safe field activities. Monitors maintenance programs using databases, inspection and test data, and material usage records. Serves as the technical representative for signals and communication systems in support of internal and external stakeholders. Supports Metro's Safety Program through engineering practices, compliance activities, and operational coordination.