Job Description
Job Title: OT Network Engineer
nFunction: Network Services / Operational Technology
nLocation: Pune
nRole Purpose
nThe OT Network Engineer is responsible for operating and supporting OT network
nenvironments across factories and industrial sites. The role ensures reliable, secure,
nand resilient OT connectivity supporting plant operations, including industrial
nswitching, OT firewalls, monitoring, incident response, remote access, lifecycle
nmanagement, and network changes with minimal production impact.
nThe engineer works closely with plant OT teams, central IT, security teams, onsite
nsupport, and vendors to deliver OT network services safely and reliably.
nKey Responsibilities
n• Operate and support OT LAN and connectivity services across manufacturing
nsites.
n• Ensure network health, availability, and performance aligned with plant
nconstraints and SLAs.
n• Support centralized remote operations for OT environments.
n• Manage industrial switching environments and plant connectivity.
n• Configure, troubleshoot, and optimize switches, VLANs,



segmentation, and
nredundancy.
n• Support industrial protocols such as PROFINET, Modbus, and EtherNet/IP.
n• Support OT firewalls (e.g., mGuard or equivalent).
n• Implement firewall rules, segmentation, NAT, and secure communication paths.
n• Align OT network changes with cybersecurity and plant security requirements.
n• Coordinate with security teams on hardening, patching, vulnerabilities, and
nsecure remote access.
n• Monitor OT networks using approved tools.
n• Troubleshoot and resolve incidents, especially production-impacting issues.
n• Participate in major incidents and maintain accurate ITSM updates.
n• Execute planned OT network changes within approved processes and
nmaintenance windows.
n• Support upgrades, new site rollouts, and design changes.
n• Maintain configurations, backups, baselines, and rollback plans.
n• Support secure OT remote access for internal teams and

📌 OT Network Engineer (Pune)
🏢 Tata Consultancy Services
📍 Pune