Operational Technology Security Engineer - Lead

We are seeking an Operational Technology Security Engineer - Lead who performs a variety of routine project tasks applied to specialized information assurance problems with Operational Technology (OT) systems. Tasks involve integration of OT processes or methodologies with information systems to resolve total system problems, or technology problems as they relate to Cybersecurity requirements.

*This position is contingent upon contract award.*

Responsibilities

• Analyzes information security requirements.
• Applies analytical and systematic approaches in the resolution of problems of workflow, organization, and planning.
• Provides security engineering support for planning, design, development, testing, demonstration, and integration of OT systems.
• Performs other related duties as assigned.

Qualifications

• Years of Experience: 7
• Education Level: N/A
• Clearance Requirements: Must possess a DoD Secret Clearance and meet IT-II Non-Critical Sensitive (Tier 3/T3) requirements.
• Certification Requirements:
  • Required training certifications in ICS300 or relevant Operational Technology (OT) or Industrial Control System (ICS) Cybersecurity certifications
  • Forescout
  • Current Requirement: DoD 8570 - IAT Level II
• Computing Environment: DLA-approved Computing Environment (M Account Access)
• Experience with OT communication protocols such as Modbus/TCP, EtherNet/IP, IEC 61850, ICCP, DNP3, BACnet, and similar industrial protocols
• Strong understanding of OT systems including SCADA, ICS, DCS, PLCs, HMIs, RTUs, and field devices
• Knowledge of secure OT network architectures, including segmentation, firewalls, IDS/IPS, and network monitoring solutions
• Proficiency with OT relevant cybersecurity frameworks such as NIST CSF, ISA/IEC 62443, and NERC CIP
• Understanding of compliance requirements for OT environments and industry specific regulatory obligations
• Proficiency in conducting vulnerability assessments across networks, databases, applications, and OT/IT systems
• Knowledge of vulnerability scanning and asset visibility tools (ACAS, Nessus, Qualys, Forescout, EyeInspect)
• Ability to recommend risk based mitigation strategies tailored to OT constraints
• Experience deploying and tuning security monitoring solutions for OT environments, including anomaly detection and threat intelligence integration
• Understanding of vendor and supply chain security practices for OT equipment and services
• Experience bridging IT and OT cybersecurity requirements to ensure aligned policies and protections
• Ability to translate technical findings into actionable recommendations for engineers, operators, and leadership
• Commitment to staying current on emerging OT threats, vulnerabilities, and best practices

About Us

Diné Development Corporation (DDC) is a Navajo Nation owned family of companies that provides government agencies and commercial organizations with high-quality IT, professional, environmental, and research and development services. DDC is dedicated to empowering the Navajo Nation and communities we serve.

Benefits

Eligible full-time employees receive a comprehensive benefits package, including medical, dental, vision, life and disability coverage, retirement savings with company match, paid time off, voluntary supplemental benefits, and access to an employee assistance program. The package also includes educational assistance, with tuition reimbursement.

EEO Statement

This contractor and subcontractor shall abide by the requirements of 41 CFR 60-1.4(a), 60-300.5(a) and 60-741.5(a). These regulations prohibit discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities, and prohibit discrimination against all individuals based on their race, color, religion, sex, sexual orientation, gender identity, national origin, or for inquiring about, discussing, or disclosing information about compensation, or any other basis prohibited by law. We participate in E-Verify.