OT Security Analyst – ICS Security & Network Segmentation

Cognizant; New York (NY); On-site; USD 134,000 - 155,000; Full time

Benefits offered by this job

Medical/Dental/Vision/Life Insurance

Paid holidays plus PTO

401(k) plan and contributions

Long-term/Short-term Disability

Paid Parental Leave

Employee Stock Purchase Plan

Job summary

Cognizant's Cloud Infrastructure & Security Services Practice seeks an experienced OT Security Analyst to assess and strengthen cybersecurity across industrial sites in the Americas. You will map OT assets, evaluate networks, and help close security gaps while coordinating with IT, OT, and Network teams.

The role emphasizes OT reference architectures, asset inventories, and segmentation planning, with a focus on safety constraints and production impact.

Qualifications

• 5+ years of experience in IC CS/OT Security or related fields.
• Strong knowledge of industrial network architecture and OT security principles.
• Experience with ISA/IEC 62443 or NIST SP 800-82.
• Familiarity with OT monitoring platforms such as Dragos, Claroty, Nozomi Networks.
• Experience in regulated manufacturing environments is preferred; relevant certifications are desirable.

Responsibilities

• Conduct OT site security assessments, building inventories of assets, topology, connectivity, and controls.
• Assess sites against OT Reference Architecture and document gaps and improvements.
• Support OT network segmentation by reviewing zones, conduits, and firewall needs.
• Analyze OT network traffic and telemetry to support segmentation and security assessments.
• Collaborate with Network teams on segmentation and firewall guidance.
• Support sensor placement, pre-cutover and post-cutover monitoring for Tier 1 sites.
• Assess new sites for security gaps and coordinate monitoring and sensor deployment.
• Maintain risk registers, findings, remediation actions, and evidence with closure tracking.
• Coordinate with plant IT, OT, engineering, and Threat Detection teams within safety and production constraints.

Skills

IC CS/OT Security

Industrial Cybersecurity

Network Security

OT Infrastructure

Education

ISA/IEC 62443

NIST SP 800-82

GICSP / GRID / GCIA

CCNA / Security+

Tools

Dragos

Claroty

Nozomi Networks

Job description

Practice - CIS - Cloud, Infrastructure, and Security Services

About Cloud Infrastructure & Security Services: Cognizant’s Cloud, Infrastructure, and Security Services Practice (CIS), is all about embracing digital transformation by driving core modernization holistically across layers. We help customers transform infrastructure and workplace to meet the rapidly evolving needs of the digital era. Our holistic approach delivers key results for our customers by achieving cloud driven modernization and workplace and operational transformation to run the business in a secure environment.

Job Summary

We are seeking an experienced OT Security Analyst to assess and strengthen cybersecurity across industrial and manufacturing sites throughout the Americas. This role will focus on OT asset discovery, industrial network topology, security assessments, sensor coverage, and network segmentation support. The analyst will evaluate sites against the enterprise OT Reference Architecture and work closely with Network, OT, IT, and security teams to identify and address security gaps. The ideal candidate will combine strong IC CS/OT Security, Industrial Cybersecurity, Network Security, or OT Infrastructure environments.

In This Role, You Will

• Conduct OT site security assessments, building accurate inventories of industrial assets, network topology, connectivity, and security controls.
• Assess manufacturing sites against the OT Reference Architecture and document security gaps, sensor coverage, risks, and recommended improvements.
• Support OT network segmentation initiatives by reviewing zones, conduits, application flows, firewall requirements, and proposed network designs.
• Analyze passive OT network traffic and security telemetry using platforms such as Dragos, Claroty, or Nozomi Networks to support segmentation and security assessments.
• Partner with Network teams on segmentation activities while providing security guidance on firewall rules, connectivity requirements, and production impacts.
• Support sensor placement planning, pre-cutover assessments, post-cutover monitoring, and validation of security coverage for Tier 1 sites.
• Assess newly acquired or onboarded sites, identify OT security gaps, and coordinate with platform teams on security monitoring and sensor deployment.
• Maintain OT risk register entries, assessment findings, remediation actions, and supporting evidence while tracking security gaps through closure.
• Collaborate with plant IT, OT engineering, infrastructure, Network, and Threat Detection & Response teams while respecting operational safety and production constraints.
• Develop site assessment documentation, network diagrams, segmentation records, runbooks, operational reports, and security status updates.

What You Need To Have To Be Considered

• 5+ years of experience in IC CS/OT Security, Industrial Cybersecurity, Network Security, or OT Infrastructure environments.
• Strong knowledge of industrial network architecture, including the Purdue Model, zones and conduits, network segmentation, and OT security principles.
• Solid networking fundamentals including VLANs, SPAN, routing, switching, firewall concepts, network diagrams, and firewall rule analysis.
• Experience building OT asset inventories and network topology documentation using data from multiple technical and operational sources.
• Experience conducting OT security assessments against reference architectures or standards such as ISA/IEC 62443 or NIST SP 800-82.
• Familiarity with OT network monitoring and asset visibility platforms such as Dragos, Claroty, or Nozomi Networks is highly preferred.
• Experience supporting OT network segmentation programs within manufacturing, industrial, or other production-sensitive environments.
• Strong understanding of industrial production and safety constraints with the ability to collaborate effectively with plant IT, OT engineers, and Network teams.
• Experience with ServiceNow or similar ITSM platforms, risk tracking, technical documentation, and security reporting.
• Experience in regulated manufacturing environments such as pharmaceuticals, life sciences, or medical devices is preferred; GICSP, GRID, GCIA, ISA/IEC 62443, CCNA, Security+, or CISSP certifications are desirable.

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Applications will be accepted until 16 Nov 2026.

Salary And Other Compensation

The annual salary for this position is between $[134,000 - 154,500depending on experience and other qualifications of the successful candidate.

This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.

Benefits

• Medical/Dental/Vision/Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan