Senior Administrator - IT security

Experience: 7 to 12 years

Location: Bengaluru, India

Skills: Industrial Control Systems (ICS), SCADA, PLCs, sensors, controllers, security tools, IT/OT segregation, hybrid security models, OT security platforms, asset discovery, anomaly detection, manufacturing, utilities, regulated OT environments, audit requirements, Vulnerability Management Tools, Security Protocols, Incident Management, Root Cause Analysis, Training, OT visibility and security platforms, OT firewalls, secure gateways, remote access solutions, SOC, SIEM, Managed Threat Detection & Response (MTDR), Threat Intelligence, Digital Risk, Malware Analysis, Certified Information Systems Security Professional (CISSP), Certified Ethical Hacker (CEH)

Job Summary
The OT Security Engineer is responsible for securing industrial control systems (ICS), OT networks, and factory environments while ensuring safety, availability, and production continuity.
The role bridges IT security and OT operations, enabling secure monitoring, risk reduction, and compliance without disrupting industrial processes.
The Senior Administrator for Vulnerability Management plays a critical role in ensuring the organization's security posture by providing advanced technical support and troubleshooting. This role is pivotal in managing complex incidents, conducting root cause analysis, and implementing effective solutions to enhance customer satisfaction and operational efficiency.

Key Responsibilities
Monitor and secure OT environments, including:
• Industrial Control Systems (ICS)
• SCADA systems
• PLCs, sensors, and controllers

Operate and manage OT security platforms (e.g., asset discovery, network monitoring, threat detection)
Monitor OT network traffic for anomalies, misconfigurations, and potential threats
Secure OT network architecture, including:
• Segmentation between IT and OT networks
• Secure remote access to OT systems
• Firewalls, gateways,



and bastion hosts for factory environments

Work with OT and engineering teams to ensure security controls do not impact process safety or uptime
Maintain and validate OT asset inventories, including:
• PLCs, HMIs, sensors, and gateways
• OT servers (on‑prem and cloud‑connected where applicable)

Identify vulnerabilities and configuration risks in OT assets
Support OT risk assessments and remediation planning aligned to plant operations
Ensure OT security controls align with:
• Customer OT security policies
• Relevant industry standards (e.g., IEC 62443, ISO/IEC 27001 – where applicable to OT scope)

Support audits, assessments, and evidence collection for OT environments
Contribute to OT security procedures, standards, and runbooks
Act as a liaison between:
• IT Security
• SOC
• OT engineering / factory teams

Support OT onboarding during transitions and new plant integrations
Contribute to secure-by-design OT architecture initiatives.
1. Adhere To Quality Standards, Regulatory Requirements, And Company Policies In All Vulnerability Management Processes And Activities.
2. Provide Advanced Technical Support For Complex Incidents Related To Vulnerability Management, Performing Root Cause Analysis And Implementing Solutions For Technical And Security Issues.
3. Conduct Knowledge Base Updates And Management, Train And Coach Analysts And Fresher Team Members To Foster A Culture Of Continuous Improvement.
4. Resolve Complex Vulnerability Management Tickets Within Agreed Slas, Collaborating With Cross-Functional Support Teams To Ensure Seamless Operations And Robust Security Posture.




5. Enhance Customer Experience And Csat Metrics Through Effective First Call Resolution Strategies, Minimizing Rejected Resolutions And Re-Open Cases While Proactively Mitigating Security Threats.

Skill Requirements
Solid understanding of OT / ICS environments, including:
• SCADA, PLCs, sensors, industrial protocols

Hands-on experience with OT network monitoring and security tools
Knowledge of IT/OT segregation and hybrid security models
Ability to work in production‑critical environments with safety focus
Experience with OT security platforms (e.g., asset discovery, anomaly detection)
Exposure to manufacturing, utilities, or industrial environments
Familiarity with regulated OT environments and audit requirements
Bachelor’s degree in Engineering (Electrical, Electronics, Instrumentation, IT, or related)
7–12+ years overall experience
3–5+ years hands‑on experience in OT / ICS security or OT operations with security focus
1. In-Depth Knowledge And Experience In Vulnerability Management Tools And Techniques.
2. Strong Understanding Of Security Protocols, Incident Management, And Root Cause Analysis Methodologies.
3. Proficiency In Troubleshooting Complex Technical Issues And Providing Effective Solutions.
4. Excellent Communication And Training Skills For Mentoring And Knowledge Sharing.

Other Requirements
OT visibility and security platforms (e.g., asset discovery, network monitoring)
OT firewalls, secure gateways, remote access solutions
Integration with SOC / SIEM for OT alerting
Tier 1-2
Managed Threat Detection & Response (MTDR)
Cloud & OT Security Monitoring
Threat Intelligence, Digital Risk & Malware Analysis
1. Optional But Valuable Certifications: Certified Information Systems Security Professional (Cissp), Certified Ethical Hacker (Ceh), Or Similar Relevant Certifications In Security And Vulnerability Management

📌 Senior Administrator IT security (Bengaluru)
🏢 HCL Technologies
📍 Bengaluru