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OT/ICS Security Lead

Jobs :: PeopleNTech LLC

Alexandria, VA • On-site

$80 - $85/hr

Full-time

Re-posted 13 days ago

Job description

Indent : SF_OP_203802-1-4
Role : OT/ICS Security Lead
Location : Boston, MA (Hybrid)
Rate : $80/hr – $85/hr
About the position
  • Lead and execute OT/ICS cybersecurity activities across multiple industrial sites ( customer sites)
  • Focus on industrial security assessment, segmentation, and risk reduction
  • Ensure OT environments are:
    • Secure
    • Stable
    • Aligned to IEC 62443 and NIST standards
  • Work closely with plant operations, engineering teams, and IT security teams
  • Deliver practical, implementable solutions without impacting production
What you'll do
Key Responsibilities
1. OT/ICS Security Assessment
  • Site visit and Conduct end-to-end OT security assessments across plants / operational sites ( apprx.10 sites)
  • Perform:
    • Asset discovery (PLCs, SCADA, HMI, network devices)
    • Network architecture reviews
    • Vulnerability identification
  • Identify:
    • Control gaps
    • Exposures and attack surfaces
    • Legacy system risks
  • Perform gap analysis aligned to IEC 62443 / NIST SP 800-82 frameworks
  • Deliver:
    • OT baseline reports
    • Risk findings and recommendations
2. OT Network Architecture & Segmentation
  • Design OT network segmentation using Purdue Model (zones & conduits)
  • Define:
    • IT–OT DMZ architecture
    • Secure communication pathways
    • Trust boundaries between systems
  • Recommend:
    • Firewall placement
    • Network isolation strategies
  • Ensure:
    • Industrial safety is not impacted
    • uptime and operational continuity are maintained
3. Industrial Cyber Risk Management
  • Identify risks across:
    • PLCs
    • SCADA systems
    • Industrial protocols
    • Vendor remote access
  • Analyze:
    • Operational impact
    • Safety risks
    • Business criticality
  • Maintain and update:
    • OT risk register
    • Risk prioritization matrix
  • Provide:
    • Risk mitigation strategies
    • Residual risk recommendations
4. Security Controls & Hardening
  • Define and recommend OT-specific security controls, including:
    • Network segmentation
    • Access control (RBAC, vendor access)
    • Monitoring & logging
  • Design compensating controls for:
    • Legacy PLC/SCADA systems
    • Systems that cannot support endpoint agents
  • Ensure controls are:
    • Practical
    • Deployable with minimal disruption
5. OT Monitoring & Threat Detection
  • Deploy and tune OT monitoring tools:
    • Claroty
    • Nozomi
    • Dragos
  • Perform:
    • Network traffic analysis
    • Protocol-level inspection
  • Detect:
    • Anomalies
    • Lateral movement risks
    • Unauthorized access
  • Integrate OT monitoring insights with IT security systems where feasible
6. Remediation & Technical Debt Reduction
  • Develop OT remediation roadmap based on findings
  • Define:
    • Short-term mitigations
    • Long-term improvements
  • Track:
    • Remediation actions
    • Owners and timelines
  • Support:
    • Technical debt reduction
    • Migration to secure baseline architecture
7. Site-Level Engagement & Coordination
  • Work closely with:
    • Plant managers
    • OT engineers
    • Maintenance and automation teams
  • Align security solutions with:
    • Operational processes
    • Maintenance windows
    • Safety requirements
  • Conduct:
    • Workshops
    • Site walkthroughs
    • Stakeholder discussions
8. Industrial Security Standards & Compliance
  • Ensure alignment with:
    • IEC 62443
    • NIST SP 800-82
  • Support:
    • Compliance assessments
    • Audit readiness
  • Map controls to:
    • Industry standards
    • Organizational security baselines
Key Deliverables
  • OT asset discovery and baseline report
  • Industrial risk assessment and mitigation plan
  • Purdue-based segmentation design
  • Security control recommendations
  • Remediation roadmap and tracking
  • Reduced OT cybersecurity risk across sites
What you'll bring
Core OT Security Skills
  • Hands-on experience with:
    • PLC, SCADA, DCS, ICS systems
  • Strong knowledge of:
    • Industrial network protocols
    • OT attack vectors and threats
Technical Expertise
  • Frameworks:
    • IEC 62443
    • NIST CSF / SP 800-82
  • Architecture:
    • Purdue Model
    • Zone–conduit segmentation
  • Tools:
    • Armis / Claroty / Nozomi / Dragos
    • OT monitoring & network visibility tools
Industrial Domain Knowledge
  • Experience in:
    • Healthcare / pharma /
    • Manufacturing / process plants
  • Understanding of:
    • Safety systems
    • Production-critical operations
Soft & Functional Skills
  • Strong problem-solving and analytical thinking
  • Ability to work with cross-functional OT + IT teams
  • Strong communication skills for:
    • Technical and non-technical stakeholders
Preferred Certifications
  • GICSP (Global Industrial Cyber Security Professional)
  • ISA/IEC 62443 Certification
  • CISSP / CISM (optional but beneficial)

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