Operational Technology (OT) Security Analyst / ICS Penetration Tester

Cyberjobs; San Antonio, Northern (TX, KY); Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Paid time off

Education reimbursement

401(k) retirement plan

Prepaid Legal Plan

Identity protection plan

Accident Insurance

Critical Illness Insurance

Hospital Indemnity Insurance

Job summary

IPSecure is seeking an OT Security Analyst / ICs Penetration Tester to assess and strengthen security for critical ICS environments, including SCADA, PLCs, RTUs, and HMIs. You will perform vulnerability testing with safety-first methods in live production settings at JBSA Lackland,San Antonio, TX.

Requirements include TS/SCI clearance, a relevant Bachelor's degree, and IAT II certs. Expect collaboration with engineers and plant managers to implement risk mitigations.

Qualifications

• Bachelor's degree in IT/CS/Cybersecurity or related discipline.
• Active TS/SCI security clearance.
• IAT II certification (e.g., Security+) is required.

Responsibilities

• Conduct hands-on OT/ICS vulnerability testing in industrial environments.
• Perform protocol analysis on Modbus, DNP3, Ethernet/IP, PROFINET, BACnet.
• Evaluate Purdue Model network segmentation and OT-to-IT bridging.
• Deliver actionable remediation reports to engineers and plant managers.
• Design non-disruptive testing methodologies prioritizing safety.

Skills

OT/ICS security testing

Vulnerability assessment

Protocol analysis

Risk communication

Safety-first approach

Education

Bachelor's degree in IT/CS/Cybersecurity

Tools

Purdue Model

Modbus/DNP3/Ethernet/IP/PROFINET/BACnet

Job description

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. 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)

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.