Cybersecurity Engineer II

Mirion is hiring an Engineer II, Cybersecurity Engineering to deliver secure command-and-control systems for nuclear and other critical infrastructure environments using a V-Model approach.

Responsibilities

• Translate customer cybersecurity requirements into traceable component-level specifications using the Standard V-Model, partnering with Project Engineering Leads
• Maintain requirements and traceability records for assigned scope; identify and flag gaps, conflicts, or ambiguities for resolution
• Provide effort estimates for assigned tasks
• Contribute to cybersecurity architecture for AIM SCS and COTS-based command-and-control solutions, including:
  • Network segmentation
  • Access control
  • Encryption and secure communications
• Apply established designs and baselines traceable to NEI 08-09 and CIS benchmark controls
• Develop and maintain design documentation for assigned scope, including:
  • Network diagrams
  • Configuration specifications
  • Cybersecurity control mapping matrices
• Stand up, configure, and deploy platform environments of 20–30 Windows servers and workstations, including virtualized infrastructure
• Deploy and configure Linux-based security appliances, network switches, and firewalls within an Active Directory domain
• Apply Group Policy-based security controls and hardening standards following approved procedures and design documentation
• Perform COTS integration tasks including system hardening, vulnerability analysis, patching, and documentation of results
• Diagnose and resolve integration issues using a systematic analytical approach; escalate complex or cross-discipline issues as needed and document resolution paths
• Maintain configuration management records throughout the build, documenting changes and deviations to preserve an audit trail
• Verify assigned product feature sets meet functional and cybersecurity acceptance criteria prior to formal test completion
• Support cybersecurity test procedures mapped through a Requirements Traceability Matrix (RTM) to validate compliance with applicable requirements
• Support Acceptance Testing by conducting vulnerability assessments and security scans; document and track findings through disposition
• Support onsite deployment at customer sites: physical installation, network commissioning, Active Directory integration, and system configuration per site-specific cybersecurity commissioning procedures
• Assist with Site Acceptance Testing (SAT) with customer security, IT/OT, and operations staff; communicate technical status and test results to the project team
• Assist with training facility personnel and preparing turnover packages
• Capture lessons learned from system deliveries and recommend improvements to build, integration, and test procedures
• Follow and help maintain team standards, playbooks, and technical library content to support consistent engineering processes and solutions
• Build proficiency in nuclear regulatory and cybersecurity standards through on-the-job experience, training, and mentoring from senior team members
• Other duties as required

Requirements

• Bachelor’s degree in Cybersecurity, Systems Engineering, Computer Science, Electrical Engineering, Information Technology, or a related discipline
• 2 to 4 years of hands-on experience in cybersecurity, systems, or network engineering
• Working knowledge of Windows Server and Active Directory, virtualization, and networking fundamentals (switching, routing, and firewalls)
• Familiarity with system hardening, vulnerability scanning, and patch management
• Clear verbal and written communication skills; ability to produce technical documentation and report status
• Familiarity with systems engineering lifecycle practices such as the V-Model
• U.S. citizenship or permanent resident status required; ability to obtain site access credentials at nuclear power plants and government facilities

Preferred

• Experience in project-based work with requirements-driven deliverables
• Experience with Linux-based appliances and virtualized clusters
• Exposure to nuclear power, defense, or other NRC/DOE/DOD-regulated environments, including nuclear communications systems and terminology
• Familiarity with NEI 08-09, NIST SP 800-82, NIST SP 800-53, IEC 62443, and NRC 10 CFR 73.54
• Security+, GICSP, or equivalent certification (or progress toward one)

Technology

• Standard V-Model, V-Model
• Windows Server, Active Directory, Group Policy
• Linux, network switches, firewalls, virtualization
• Requirements Traceability Matrix (RTM)
• NEI 08-09, CIS benchmark controls
• AIM SCS, COTS, IT/OT

Travel

• Up to 25% travel

Physical Requirements

• Required to sit or stand, bend, type and reach while performing daily functions
• Daily work with office equipment and materials

Work Environment

• Job tasks performed sitting at a desk or standing to perform other tasks
• Reasonable accommodation may be made for individuals with disabilities to perform essential functions
• Duties, responsibilities, and activities may change at any time with or without notice

Location: Carrollton, TX (onsite)

Job Type: contract

Minimum Experience: 2 years