Role: Senior Administrator - IT security

Section Title: Job Summary

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.rnThe 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.

Section Title: Key Responsibilities

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 uptimernMaintain 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.

- Provide Advanced Technical Support for Complex Incidents Related to Vulnerability Management, Performing Root Cause Analysis, and Implementing Solutions for Technical and Security Issues.
- Conduct Knowledge Base Updates and Management, Train and Coach Analysts and Fresher Team Members to Foster a Culture of Continuous Improvement.
- Resolve Complex Vulnerability Management Tickets Within Agreed Slas, Collaborating with Cross-Functional Support Teams to Ensure Seamless Operations and Robust Security Posture.
- Enhance Customer Experience and Csat Metrics Through Effective First Call Resolution Strategies, Minimizing Rejected Resolutions and Re-Open Cases While Proactively Mitigating Security Threats.

Section Title: Skill Requirements

Skill Requirements

Strong 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

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

1. In-Depth Knowledge and Experience in Vulnerability Management Tools and Techniques.

- Solid Understanding of Security Protocols, Incident Management, and Root Cause Analysis Methodologies.
- Proficiency In Troubleshooting Complex Technical Issues and Providing Effective Solutions.
- Excellent Communication and Training Skills for Mentoring and Knowledge Sharing.

Section Title: Must Have Skills

Must Have Skills

Section Title: Other Requirements

Other Requirements

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

📌 Threat Intelligence Engineer (Bengaluru)
🏢 SISL Global
📍 Bengaluru