Operate, maintain, and troubleshoot PLC, SCADA, and DCS systems supporting continuous process operations across the QAFCO ammonia and urea fertilizer plant Perform configuration, programming, and modification of PLC logic (Siemens S7, Allen Bradley, or equivalent) and SCADA/HMI interfaces under approved Management of Change (MOC) procedures Carry out preventive and corrective maintenance on field instrumentation, control panels, actuators, solenoid valves, and automation hardware; ensure minimal process disruption during interventions Support DCS (Honeywell Experion, ABB 800xA, or equivalent) maintenance activities including controller backups, loop checks, alarm rationalization, and functional safety testing Participate in Safety Instrumented System (SIS) testing and proof tests for Safety Instrumented Functions (SIFs) in compliance with IEC 61511 / IEC 61508 standards Coordinate with process, electrical, and instrumentation teams during plant shutdowns and turnarounds to execute auto...