Engineer - Automation & Control System

Sui Southern Gas Company Limited · Karachi, Karachi District; Sindh, Pakistan

Bachelors in Electrical / Electronics / Mechatronics / Instrumentation or equivalent with at least 2 years of relevant experience.

Candidates having experience within gas distribution, oil and gas, utilities, petrochemicals, or energy sectors will be preferred.

Responsibilities:

• Assist in the design, configuration, and implementation of automation and control solutions for SSGC's transmission, distribution, and industrial metering systems.
• Support the development of Piping and Instrumentation Diagrams (P&IDs), loop diagrams, control philosophies, and I/O documentation for gas handling and measurement facilities.
• Prepare and update User Requirement Specifications, control system design documents, and technical datasheets.
• Support the development, testing, and documentation of PLC, RTU, and HMI applications used in gas monitoring and control operations.
• Assist in developing system validation protocols, FAT, SAT, and internal testing procedures to ensure compliance and system reliability.
• Participate in the specification, evaluation, and procurement of field instruments, analyzers, PLCs/RTUs, communication hardware, and other automation equipment.
• Prepare and review electrical/control schematics, panel drawings, wiring schedules, and I/O lists.
• Assist in creating accurate scope of work and project documentation for internal use and contractor coordination.
• Support operations, installation, testing, commissioning and troubleshooting of automation systems at SSGC sites.
• Assist in designing and maintaining Automation communication networks, including Ethernet, fiber optic, and wireless communication channels used for telemetry and real-time monitoring.
• Understand and work with major network topologies used in industrial and utility environments i. e., Star topology for centralized communication, Ring topology (RSTP/PRP/HSR) for redundancy and high availability, Linear bus topology for remote stations and RTU chaining.

• Assist in the design, configuration, and implementation of automation and control solutions for SSGC's transmission, distribution, and industrial metering systems.
• Support the development of Piping and Instrumentation Diagrams (P&IDs), loop diagrams, control philosophies, and I/O documentation for gas handling and measurement facilities.
• Prepare and update User Requirement Specifications, control system design documents, and technical datasheets.
• Support the development, testing, and documentation of PLC, RTU, and HMI applications used in gas monitoring and control operations.
• Assist in developing system validation protocols, FAT, SAT, and internal testing procedures to ensure compliance and system reliability.
• Participate in the specification, evaluation, and procurement of field instruments, analyzers, PLCs/RTUs, communication hardware, and other automation equipment.
• Prepare and review electrical/control schematics, panel drawings, wiring schedules, and I/O lists.
• Assist in creating accurate scope of work and project documentation for internal use and contractor coordination.
• Support operations, installation, testing, commissioning and troubleshooting of automation systems at SSGC sites.
• Assist in designing and maintaining Automation communication networks, including Ethernet, fiber optic, and wireless communication channels used for telemetry and real-time monitoring.
• Understand and work with major network topologies used in industrial and utility environments i. e., Star topology for centralized communication, Ring topology (RSTP/PRP/HSR) for redundancy and high availability, Linear bus topology for remote stations and RTU chaining.
• Assist in configuring and troubleshooting industrial switches, including Layer 2 managed switching.
• VLAN creation and segmentation, Redundancy protocols (RSTP, MRP, PRP), Port security and link monitoring.
• Support the deployment and maintenance of communication protocols, including Modbus TCP/IP, serial Modbus, IEC standards, DNP3, and OPC (DA & UA).
• Monitor communication health, polling performance, and ensure reliable connectivity between RTUs, PLCs, field instrumentation, and central SCADA servers.
• Assist in preparing network layouts, communication architecture drawings, and topology diagrams for communication and control systems.
• Understanding of:
  • Field instrumentation (pressure, flow, temperature, level)
  • PLC/RTU logic development Automation systems & industrial communication protocols
  • Good knowledge of basic networking concepts, including IP addressing, switching, routing basics, network segmentation, and industrial communication standards.
  • Strong teamwork and customer-handling abilities.

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