OT Networking Engineer

Job Summary

We are seeking an experienced IT/OT Networking Engineer with expertise in industrial networking, OT cybersecurity, ICS/SCADA systems, and network security. The role involves designing, securing, and supporting converged IT/OT networks across manufacturing, utilities, energy, and industrial environments while ensuring reliability, compliance, and seamless connectivity.

Responsibilities

• Design and support IT/OT network architectures following the Purdue Model and defense-in-depth principles.
• Configure and manage VLANs, ACLs, VRFs, OSPF, BGP, NAT, QoS, DMZs, and network segmentation.
• Deploy and administer Palo Alto, Fortinet, and Cisco firewalls.
• Support connectivity for SCADA, PLC, RTU, HMI, Historian, and IIoT systems.
• Implement secure remote access solutions using VPNs, Jump Servers, and Zero Trust models.
• Monitor and troubleshoot network performance using SolarWinds, PRTG, Zabbix, Wireshark, Nozomi, and Claroty.
• Secure industrial protocols including Modbus TCP, OPC UA, Profinet, EtherNet/IP, DNP3, and BACnet.

Requirements

• 9 to 15 years of experience in Network Engineering, including 3+ years in OT/Industrial environments such as Manufacturing, Utilities, Pharma, Energy, or Oil Gas.
• Strong expertise in L2/L3 networking, Routing and Switching, VLANs, ACLs, STP, HSRP/VRRP, OSPF, BGP, and QoS.
• Hands-on experience with Cisco, Juniper, Aruba, or HPE networking solutions and Palo Alto, Fortinet, or Cisco firewalls.
• Experience with network services and tools including DHCP, DNS, NTP, IPAM, Syslog, and Wireshark.
• Good understanding of ICS/SCADA architectures, Purdue Model, OT DMZ design, Historian connectivity, and industrial networking concepts.
• Working knowledge of industrial protocols such as Modbus TCP, OPC UA, Profinet, EtherNet/IP, and DNP3.
• Familiarity with OT cybersecurity frameworks and controls including IEC 62443, NIST CSF, IDS/IPS, NAC, SIEM, and vulnerability management.

Education

• Bachelor of Computer Applications
• Bachelor of Science
• Bachelor of Engineering
• Bachelor of Technology

Preferred Skills

• Domain: IOT -> IOT-ALL
• Technology: Industrial IOT Embedded Software -> Control Systems Acquisition Systems -> SCADA
• Technology: Industrial IOT Embedded Software -> OPC Standards for process control -> OPC UA