Operational Technology (OT) Security Engineer
Fairfax, VA - USA
Job Summary
Operational Technology (OT) Security Engineer
Location: Government site and/or off-site
Clearance: DoD Secret (IT-II / Tier 3 eligible)
Position Summary
Nationwide IT Services NIS is seeking an Operational Technology (OT) Security Engineer to perform project tasks supporting information assurance for OT systems. To integrate OT processes with IT systems to resolve cybersecurity and system challenges. Analyze security requirements and supports planning design development testing and integration of OT systems.
Key Responsibilities
Our benefits package includes medical dental and vision insurance life and disability insurance 401(k) plan with employer match paid holidays PTO (sick/vacation) commuter benefits employee assistance program (EAP) and educational reimbursement along with Pet Insurance.
Nationwide IT Services Inc. provides equal employment opportunities (EEO) to all qualified applicants regardless of race color religion sex national origin sexual orientation gender identity genetics disability or protected veteran status.
Location: Government site and/or off-site
Clearance: DoD Secret (IT-II / Tier 3 eligible)
Position Summary
Nationwide IT Services NIS is seeking an Operational Technology (OT) Security Engineer to perform project tasks supporting information assurance for OT systems. To integrate OT processes with IT systems to resolve cybersecurity and system challenges. Analyze security requirements and supports planning design development testing and integration of OT systems.
Key Responsibilities
- Manage POA&M entries (track findings remediation milestones)
- Develop cybersecurity artifacts (STIGs TCGs IAVMs RMF documentation)
- Generate audit-ready reports (vulnerabilities compliance risk)
- Translate technical findings into actionable recommendations
- Build automated workflows for remediation compliance and reporting
- Recommend risk-based mitigation strategies for OT environments
- Develop and maintain cybersecurity documentation and artifacts
- Implement OT-specific incident response plans
- Stay current on emerging OT threats and best practices
- Use tools such as Excel Access Power BI and Power Platform
- 7 years of cybersecurity policy experience
- Active DoD Secret clearance (IT-II / Tier 3 eligible)
- Experience with OT protocols (Modbus EtherNet/IP IEC 61850 ICCP DNP3 BACnet)
- Knowledge of OT systems (SCADA ICS DCS PLCs HMIs RTUs)
- Understanding of secure OT architectures (segmentation firewalls IDS/IPS)
- Experience with secure remote access and OT patch/update processes
- Familiarity with frameworks (NIST CSF ISA/IEC 62443 NERC CIP)
- Experience preparing for DoD cybersecurity inspections
- Knowledge of compliance and regulatory requirements
- Experience with vulnerability assessments and tools (ACAS Nessus Qualys Forescout EyeInspect)
- OT risk assessment experience (threats vulnerabilities impacts)
- Knowledge of hardening baselines and compliance enforcement
- Experience with monitoring solutions anomaly detection threat intelligence
- Familiarity with OT forensics and incident analysis
- Understanding of patch and change management processes
- Ability to produce analytics and trend reports from security tools
- Knowledge of vendor/supply chain security practices
- Experience aligning IT and OT cybersecurity requirements
- Strong analytical research and communication skills
- Ability to work independently and collaboratively
- Experience with DoD cybersecurity policies and processes
- ICS300 or equivalent OT/ICS training
- DoD 8570 IAT Level II (current); DoD 8140E (future)
- Forescout certification
- DLA Computing Environment (M Account Access)
- Work Role: ISSM (722) Intermediate
Why Join Nationwide IT Services
Nationwide IT Services is a trusted government contractor supporting Department of Defense customers. We offer the opportunity to work on high-impact cybersecurity missions alongside experienced professionals in a collaborative and growth-focused environment.Our benefits package includes medical dental and vision insurance life and disability insurance 401(k) plan with employer match paid holidays PTO (sick/vacation) commuter benefits employee assistance program (EAP) and educational reimbursement along with Pet Insurance.
Nationwide IT Services Inc. provides equal employment opportunities (EEO) to all qualified applicants regardless of race color religion sex national origin sexual orientation gender identity genetics disability or protected veteran status.
Required Experience:
Manager