Senior OT Security Engineer — DHS RMF & ATO Expert

onezerollc; Washington (District of Columbia); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health/dental/vision/life insurance

401K with company match

PTO & paid holidays

Employee referral program

Educational assistance

Job summary

OneZero Solutions, LLC seeks a Sr. Operational Technology (OT) Security Engineer to support DHS mission systems under FISMA/RMF and the ATO process.

The role emphasizes OT security engineering design reviews, vulnerability assessments, and incident response planning, with TS/SCI clearance. You will provide technical guidance on OT services security, identify threats and risks, and perform hands-on OT assessments while helping to integrate secure OT practices into the infrastructure.

Qualifications

• 12+ years of OT engineering and security experience in DoD or Federal Government.
• Experience in Intelligence Community and Law Enforcement is a strong plus.
• Expertise in OT systems and security technologies incl. ICS and related networks.
• Familiarity with NIST SP 800-82 and ISA/IEC 62443 frameworks.
• Ability to communicate complex technical concepts to non-technical audiences.
• Excellent written and verbal communication; able to work independently and in teams.

Responsibilities

• Serve as Cybersecurity Assessment Team's principal OT SME.
• Lead OT security engineering design reviews, vulnerability assessments, pen testing, and incident response planning.
• Provide technical guidance to DHS on OT security matters, threat analysis and risk mitigation.
• Perform hands-on OT system assessments identifying in-scope tech and vulnerabilities.
• Develop and implement secure OT policies and assessment procedures for regulatory compliance.
• Collaborate with engineering and government stakeholders to integrate OT security.
• Stay current with threats and technologies to continually enhance assessments.

Skills

OT security

Vulnerability assessment

Penetration testing

Incident response

NIST 800-82

ISA/IEC 62443

CISA alerts

Technical communication

Education

Bachelor's degree in Cyber Security

CRISC

GISP

CISSP

CASP

Job description

OneZero Solutions, LLC seeks a Sr. Operational Technology (OT) Security Engineer to support DHS mission systems under FISMA/RMF and the ATO process.

The role emphasizes OT security engineering design reviews, vulnerability assessments, and incident response planning, with TS/SCI clearance. You will provide technical guidance on OT services security, identify threats and risks, and perform hands-on OT assessments while helping to integrate secure OT practices into the infrastructure.