Senior Administrator - IT security
India
Job Description
Senior Administrator - IT security
Bengaluru, Karnataka

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.\r\nThe 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:\r\n\r\nIndustrial Control Systems (ICS)\r\nSCADA systems\r\nPLCs, sensors, and controllers\r\n\r\n\r\nOperate and manage OT security platforms (e.g., asset discovery, network monitoring, threat detection)\r\nMonitor OT network traffic for anomalies, misconfigurations, and potential threats\r\nSecure OT network architecture, including:\r\n\r\nSegmentation between IT and OT networks\r\nSecure remote access to OT systems\r\nFirewalls, gateways, and bastion hosts for factory environments\r\n\r\n\r\nWork with OT and engineering teams to ensure security controls do not impact process safety or uptime\r\nMaintain and validate OT asset inventories, including:\r\n\r\nPLCs, HMIs, sensors, and gateways\r\nOT servers (on‑prem and cloud‑connected where applicable)\r\n\r\n\r\nIdentify vulnerabilities and configuration risks in OT assets\r\nSupport OT risk assessments and remediation planning aligned to plant operations\r\nEnsure OT security controls align with:\r\n\r\nCustomer OT security policies\r\nRelevant industry standards (e.g., IEC 62443, ISO/IEC 27001 – where applicable to OT scope)\r\n\r\n\r\nSupport audits, assessments, and evidence collection for OT environments\r\nContribute to OT security procedures, standards, and runbooks\r\nAct as a liaison between:\r\n\r\nIT Security\r\nSOC\r\nOT engineering / factory teams\r\n\r\n\r\nSupport OT onboarding during transitions and new plant integrations\r\nContribute 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

Strong understanding of OT / ICS environments, including:\r\n\r\nSCADA, PLCs, sensors, industrial protocols\r\n\r\n\r\nHands-on experience with OT network monitoring and security tools\r\nKnowledge of IT/OT segregation and hybrid security models\r\nAbility to work in production‑critical environments with safety focus\r\nExperience with OT security platforms (e.g., asset discovery, anomaly detection)\r\nExposure to manufacturing, utilities, or industrial environments\r\nFamiliarity with regulated OT environments and audit requirements\r\nBachelor’s degree in Engineering (Electrical, Electronics, Instrumentation, IT, or related)\r\n7–12+ years overall experience\r\n3–5+ 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)\r\nOT firewalls, secure gateways, remote access solutions\r\nIntegration with SOC / SIEM for OT alerting

 

Tier 1-2\\\\r\\\\n\\\\r\\\\nManaged Threat Detection & Response (MTDR)\\\\r\\\\n\\\\r\\\\nCloud & OT Security Monitoring\\\\r\\\\nThreat 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

Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 226,300 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2025 totaled $14.5 billion.

23 Benefits At HCLTech, we believe in empowering our employees with comprehensive benefits that support their professional growth and enhance their well-being. When you sign up for a career with us, you gain access to: https://rmkcdn.successfactors.com/147eb21f/a701dca9-f32d-4fc9-9447-6.svg Industry-benchmarked compensation https://rmkcdn.successfactors.com/147eb21f/b0c54381-ddcc-4a33-9b35-9.svg Best-in-class healthcare benefits https://rmkcdn.successfactors.com/147eb21f/b73027be-7aae-4d36-a090-4.svg Personal time off https://rmkcdn.successfactors.com/147eb21f/d5b4fdfd-2e99-4e26-9878-9.svg Maternity and paternity benefits https://rmkcdn.successfactors.com/147eb21f/3d42b0fc-4652-435a-9ece-c.svg Access to skills / higher education programs/resources https://rmkcdn.successfactors.com/147eb21f/aeddeaf2-9e25-4584-ad11-d.svg Discounts on products and services via Benefit Box https://rmkcdn.successfactors.com/147eb21f/a9609a3b-2700-4b3c-9d90-a.svg Participate in CSR programs and live life with a purpose https://rmkcdn.successfactors.com/147eb21f/c6e33851-710f-4634-bd69-f.svg Opportunities to grow and advance your career Note: The benefits listed above vary depending on the nature of your employment and the country where you work. Some benefits may be available in some countries but not in all.