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.
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
Required Qualifications
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
Certifications / Training
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.
