OT Security Analyst & Pen Tester – Live ICS Safety Testing

Cybersecurity Jobs

San Antonio (TX)

On-site

USD 120,000 - 180,000

Full time

3 days ago

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Benefits offered by this job

Medical benefits

Unlimited vacation

Paid federal holidays

Education and certification reimburse

401(k) with employer match

Prepaid Legal Plan

Identity Protection Plan

Accident Insurance

Critical Illness Insurance

Hospital Indemnity Insurance

Job summary

IPSecure, Inc. is seeking an onsite Senior OT/ICS cybersecurity specialist for Lackland AFB, TX. You will perform hands-on testing to strengthen OT/ICS security while prioritizing safety and plant reliability.

You’ll analyze protocols like Modbus, DNP3, Ethernet/IP, PROFINET, and BACnet, review Purdue Model-based segmentation, and craft actionable remediation reports for engineering teams and plant managers.

Qualifications

Active TS/SCI security clearance required.
Bachelor’s degree in IT, CS, Cybersecurity, Information Systems, Engineering, or related discipline.

Responsibilities

Perform hands-on safety-first security assessments, document vulnerabilities, and work with plant engineers to reduce risks.
Conduct active and passive security assessments across OT environments (SCADA, PLCs, RTUs, HMI).
Analyze and test industrial protocols (Modbus, DNP3, Ethernet/IP, PROFINET, BACnet).
Review network segmentation designs using the Purdue Model; identify IT-to-OT bridging.
Produce clear remediation reports for engineers and plant managers.
Design customized, non-disruptive testing methods to avoid triggering failures.