Position Summary:

Design, implement, and maintain security controls across enterprise IT networks and Operational Technology (OT) environments (including manufacturing and plant floor systems). Ensure systems are secure, compliant, and resilient in a regulated pharmaceutical manufacturing setting.

Key Responsibilities:
- Network Security (IT):
- Design, implement, and manage security architecture across LAN/WAN, wireless, VPN, firewalls, and cloud connectivity (Azure/Entra ID environments).
- Administer and optimize perimeter and internal segmentation controls (firewalls, NAC, DNS security/Cisco Umbrella, proxies).
- Monitor network traffic for anomalies; collaborate with SOC/MDR partners (e.g., Arctic Wolf) to triage and respond to alerts.
- Manage VPN, remote access, and secure site-to-site connectivity across manufacturing plants, distribution centers, and corporate offices.
- Support identity and access controls for network infrastructure (802.1x, RADIUS, privileged access).
- OT/ICS Security:
- Assess and secure OT environments including SCADA, PLCs, DCS, HMIs,



and manufacturing execution systems (MES).
- Implement IT/OT segmentation (Purdue Model alignment), including DMZs between corporate IT and plant floor networks.
- Conduct OT asset inventory, vulnerability assessments, and risk scoring specific to legacy and vendor-locked industrial systems.
- Partner with Manufacturing, Engineering, and Automation teams to embed security requirements into OT change control, patch management, and vendor remote access.
- Ensure OT security controls align with regulatory constraints (validated systems, GxP change control) without disrupting production uptime.
- Cybersecurity Program Support:
- Support NIST CSF 2.0-aligned governance activities, risk assessments, control gap remediation, and regulatory audits (FDA 21 CFR Part 11, GxP, SOC 2 Type II, DSCSA-related systems).
- Support penetration testing and remediation cycles for network and OT-facing assets.
- Participate

📌 Network Security Engineer (Chennai)
🏢 Saama
📍 Chennai