Operational Technology (OT) Security Analyst / ICS Penetration Tester

IPSecure, Inc.; San Antonio (TX); On-site; USD 125,000 - 180,000; Full time

Benefits offered by this job

Medical, Dental, Vision

401(k) with match

Education and Certification Reimb

Paid holidays

Sick leave

Identity protection

Disability insurance

Job summary

IPSecure, Inc. seeks an Operational Technology Security Analyst to evaluate, attack, and strengthen industrial control system security at JBSA Lackland, San Antonio.

You will perform hands-on, safety-first assessments of OT networks, with focus on Purdue Model segmentation and critical protocols, while communicating risk to engineers and plant leadership. The role requires a TS/SCI clearance, a bachelor’s degree in a related field, and experience in OT/ICS vulnerability testing.

Qualifications

• 3–5 years of cybersecurity testing experience with at least 2 years focused on OT/ICS environments.
• Solid working knowledge of industrial network architecture and the Purdue Model.
• Active TS/SCI clearance is required.
• Bachelor's degree in Information Technology, Computer Science, Cybersecurity, Information Systems, Engineering, or related discipline; equivalent experience accepted.
• IAT II certification (e.g., Security+) preferred.

Responsibilities

• Conduct hands‑on, safety‑first security assessments of OT environments (SCADA, PLCs, RTUs, HMIs).
• Document vulnerabilities and collaborate with plant engineers to mitigate risks.
• Test Modbus, DNP3, Ethernet/IP, PROFINET, BACnet and other industrial protocols.
• Review network designs (Purdue Model) for IT‑OT segmentation and bridging risks.
• Deliver clear remediation reports to engineers and plant managers.
• Design non‑disruptive testing methodologies to avoid downtime or safety incidents.

Job description

Operational Technology (OT) Security Analyst / IC 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. Equivalentexperiencemay 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)

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.

IPSecure is an Equal Opportunity affirmane action Employer.

EOE, Minorities, Females, Vet, Disabled, Sexual Orientation, Gender Identity or any other protected class. All qualified job seekers are encouraged to apply. IPSecure is committed to America's veterans by providing opportunities for them to continue contributing after service to our nation. We also work to provide reasonable accommodations to individuals with disabilities.
EEO Is The Law

Disability Accessibility Accommodation

- If you have a disability and require assistance with our online application process, please tell us how we can help.
E-mail [e-mail] or call 210-877-1111.

Note:

Pay Transparency - The company will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant.