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.

Technical 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.

Additional Responsibilities
- Solid stakeholder management and communication skills.
- Ability to bridge IT and OT requirements effectively.
- Excellent troubleshooting, documentation, and problem-solving capabilities.

Educational Requirements
- 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

Service Line

Engineering Services

📌 OT Networking Engineer (Bengaluru)
🏢 Infosys
📍 Bengaluru