Job Description

Job Title: OT Network Engineer

/n

Function: Network Services / Operational Technology

/n

Location: Pune

/n

Role Purpose

/n

The OT Network Engineer is responsible for operating and supporting OT network

/n

environments across factories and industrial sites. The role ensures stable, secure,

/n

and resilient OT connectivity supporting plant operations, including industrial

/n

switching, OT firewalls, monitoring, incident response, remote access, lifecycle

/n

management, and network changes with minimal production impact.

/n

The engineer works closely with plant OT teams, central IT, security teams, onsite

/n

support, and vendors to deliver OT network services safely and reliably.

/n

Key Responsibilities

/n

/n

- Operate and support OT LAN and connectivity services across manufacturing

/n

/n

sites.

/n

/n

- Ensure network health, availability, and performance aligned with plant

/n

/n

constraints and SLAs.

/n

/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

/n

/n

redundancy.

/n

/n

- Support industrial protocols such as PROFINET, Modbus, and Ether Net/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

/n

/n

secure remote access.

/n

/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

/n

/n

maintenance windows.

/n

/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 approved vendors.

/n

- Ensure access follows defined approvals, monitoring, and security controls.

/n

- Manage OT IP addressing, subnet planning, and documentation.

/n

- Support firmware upgrades, patching, and lifecycle management of OT devices.

/n

- Track EOL/EOS risks and coordinate upgrades during plant shutdown windows.

/n

- Coordinate with onsite teams, OEMs, and vendors for break-fix, RMA, and

/n

/n

escalations.

/n

/n

- Maintain OT network documentation, diagrams, inventories, and runbooks.

/n

- Contribute to RCA and continuous improvement of OT network operations.

/n

/n

Required Skills & Experience

/n

Technical Skills

/n

/n

- Strong experience in OT / industrial network operations

/n

- Hands-on experience with industrial Ethernet switching

/n

- Experience with OT firewalls (mGuard preferred)

/n

- Knowledge of network segmentation, IT/OT separation, and OT security zones

/n

- Solid understanding of TCP/IP, VLANs, routing, redundancy, NAT, ACLs, and

/n

/n

firewalls

/n

/n

- Experience with monitoring tools, incident/change management, and lifecycle

/n

/n

activities

/n

/n

- Knowledge of Purdue model and OT cybersecurity is desirable

/n

/n

Experience

/n

/n

- 5+ years in network operations, with 23 years in OT / industrial environments

/n

- Experience supporting manufacturing plants or industrial sites

/n

- Experience in high-availability, safety-critical environments

/n

/n

Soft Skills

/n

/n

- Strong troubleshooting and analytical skills

/n

- Calm under production-impacting situations

/n

- Valuable communication and coordination skills

/n

- Strong documentation and change discipline

/n

- Willingness to work in 24x7 or on-call support models if required

/n

/n

Preferred

/n

/n

- Experience in global manufacturing environments

/n

- Exposure to OT cybersecurity, IT/OT convergence, or factory modernization

/n

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