Command And Control Security Engineer Jobs

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Cybersecurity Engineer II

Mirion Carrollton, TX

Carrollton, TX

Today

Contract Command And Control Security Identity and Access Management Industrial It/ot Security

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Job Description

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

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