Analyst - OT Security

GRAMAX; Chennai District; On-site; INR 1,800,000 - 2,800,000; Full time

Job summary

GRAMAX is seeking an OT Cybersecurity Specialist in Chennai to conduct security assessments on OT/ICS environments, identify gaps, and build remediation roadmaps. You will deploy OT security tools, support PoCs, and collaborate with OEMs and engineering teams to ensure secure production deployments.

Responsibilities include risk assessment, regulatory compliance, and integration with enterprise SOC/SIEM. Strong knowledge of IEC 62443, NIST standards, and OT networks is essential.

Qualifications

• Experience conducting OT cybersecurity assessments per IEC 62443, NIST SP 800-82 and NIST CSF.
• Hands-on with OT asset discovery, vulnerability assessments and maturity reviews.
• Ability to identify gaps, assess risks and develop remediation roadmaps.

Responsibilities

• Conduct OT cybersecurity assessments following industry standards.
• Perform OT asset discovery, network reviews, and vulnerability assessments.
• Develop remediation roadmaps and track progress with stakeholders.
• Ensure OT environment compliance with regulatory and security requirements.
• Deploy and support OT security solutions (e.g., Nozomi, Claroty, OT Firewalls).
• Integrate OT security with enterprise SOC/SIEM platforms and support PoCs.

Skills

IEC 62443

NIST SP 800-82

NIST CSF

OT Asset Discovery

Vulnerability Assessments

ICS/SCADA Security

Nozomi Networks

Claroty

Tenable OT

SIEM/SOAR

NAC

OT Firewalls

Threat Intelligence

Incident Response

Governance & Policy

Tools

Nozomi Networks

Claroty

Tenable OT

SIEM

SOAR

NAC

Job description

Department / Sub-Department: Cyber Security

Key Responsibilities

• Conduct OT cybersecurity assessments in accordance with IEC 62443, NIST SP 800-82, NIST CSF, and other industry standards.
• Perform OT asset discovery, network architecture reviews, vulnerability assessments, and cybersecurity maturity assessments.
• Identify security gaps, assess cyber risks, and develop remediation roadmaps.
• Evaluate OT environments for compliance with applicable regulatory and security requirements.
• Deploy, configure, and support OT security solutions such as OT Asset Discovery, NIDS, EDR, OT Firewalls, Secure Remote Access (SRA), OT Network Monitoring, and Industrial SIEM.
• Integrate OT security tools with enterprise SOC and SIEM platforms.
• Support Proof of Concepts (PoCs), pilot deployments, and production implementations.
• Analyze and secure Industrial Control Systems (ICS), including SCADA, PLCs, RTUs, HMIs, DCS, and industrial communication protocols.
• Work with OT security technologies such as Nozomi Networks, Claroty, Tenable OT, SIEM, SOAR, NAC, Firewalls, and Threat Intelligence platforms.
• Prepare assessment reports, risk registers, executive summaries, remediation plans, and technical documentation.
• Develop OT cybersecurity policies, standards, procedures, and governance frameworks.
• Support OT cyber incident investigations, threat hunting, malware analysis, and incident response activities.
• Recommend containment, eradication, and recovery strategies for OT security incidents.
• Conduct customer workshops, technical presentations, and solution demonstrations.
• Gather customer requirements and recommend appropriate OT cybersecurity solutions.
• Collaborate with OEMs, system integrators, customer engineering teams, and internal stakeholders to ensure successful project delivery.
• Provide technical leadership, mentor junior analysts, and support project execution.