Operational Technology (OT) Security Analyst / ICS Penetration Tester

Port San Antonio
Port San Antonio

IT

San Antonio, TX, USA

Posted on Oct 7, 2026
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Position: Operational Technology (OT) Security Analyst / ICS Penetration Tester
Location: JBSA - Lackland, TX
Job Id: 902
# of Openings: 1
Operational Technology (OT) Security Analyst / ICS Penetration Tester – TS/SCI Clearance Required – JBSA Lackland – San Antonio, TX
Job Description
We are seeking a highly skilled Operational Technology (OT) Security Analyst to evaluate, attack, and strengthen the security posture of our critical industrial control systems (ICS). Unlike standard IT penetration testing, this role requires a deep understanding of physical safety constraints, legacy industrial protocols, and the unique challenges of testing live production environments without causing downtime.
Job Responsibilities
  • The candidate will be responsible for conducting hands-on safety-first security assessments, documenting vulnerabilities, and collaborating with plant engineers to mitigate physical and digital risks.
  • Vulnerability Testing: Conduct active and passive security assessments on OT environments, including SCADA, PLCs, RTUs, and HMI systems.
  • Protocol Analysis: Analyze and test proprietary and open industrial protocols (e.g., Modbus, DNP3, Ethernet/IP, PROFINET, BACnet).
  • Architectural Review: Evaluate network segmentation designs (Purdue Model) and identify unauthorized IT-to-OT bridging.
  • Risk Mitigation: Deliver clear, actionable remediation reports to both highly technical engineering teams and non-technical plant managers.
  • Safety First Execution: Design customized, non-disruptive testing methodologies specifically tailored to avoid triggering physical system failures or emergency shutdowns .
Basic Qualifications
Security Clearance: Active TS/SCI
Education: Bachelor's degree in Information Technology, Computer Science, Cybersecurity, Information Systems, Engineering, or related discipline. Equivalent experience may be substituted.
Certification: Candidate must meet applicable IAT II certification requirements (ex: Security+).
Experience:
  • Minimum of 3–5 years of dedicated experience in cybersecurity testing, with at least 2 years focused specifically on OT/ICS environments.
  • Industrial Protocols: Solid working knowledge of industrial network architecture and the Purdue Model.
  • Safety Awareness: Proven track record of performing vulnerability assessments in operational environments where physical safety is the highest priority.
Preferred Qualifications
Certifications:
  • Global Industrial Cyber Security Professional (GICSP)
  • GIAC Response and Industrial Defense (GRID)
  • Certified Information Systems Security Professional (CISSP)
  • Offensive Security Certified Professional (OSCP/OSCP+) (as evidence of core ethical hacking capabilities)
Benefits
Medical, Dental, Vision, Unlimited Vacation, Sick Leave, Paid Federal Holidays, Education and Certification Reimbursement Program, 401(k) retirement plan with safe harbor employer match after 3 months, Prepaid Legal Plan and Identity Protection Plan available, Accident Insurance, Critical Illness Insurance, and Hospital Indemnity Insurance available.
EEOC Statement
IPSecure does not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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