Mirion

Sr. Engineer, Cybersecurity Engineering

Mirion  •  $113k - $136k/yr  •  Carrollton, TX (Onsite)  •  2 hours ago
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Job Description

The Senior Engineer, Cybersecurity Engineering owns the end-to-end delivery of secure command-and-control systems for critical infrastructure environments. Responsibilities span requirements, design, integration, validation, and deployment within a V-Model framework, working across multidisciplinary teams. Success in this role requires both disciplined systems engineering and deep technical expertise.

JOB RESPONSIBILITIES, DUTIES & CORE FUNCTIONS
Requirements
Definition & Analysis
• Translate customer cybersecurity needs into traceable system-level and component-level specifications using the Standard V-Model, while collaborating with Project Engineering Leads.
• Contribute to engineering cost estimates based on project requirements and communicate requirements-related issues and risks clearly to program leadership and customers.
System Design & Architecture
• Design cybersecurity architectures for AIM SCS and COTS-based command-and-control solutions, encompassing network segmentation, access control, encryption, secure communications, and integration of physical security subsystems, with all design decisions traceable to applicable NEI 08-09 and CIS benchmark controls.
• Architect platform environments of 20–30 Windows servers and workstations within an Active Directory domain—defining Group Policy-based security controls, virtualized cluster layouts, storage systems, Linux-based security appliances, network switches, and firewalls.
• Produce and maintain design documentation—including virtual and network design plans, network architecture diagrams, configuration specifications, and cybersecurity control mapping matrices—with full traceability to system requirements.
Integration & Build
• Stand up, configure, and deliver environments of 20–30 servers and workstations within an Active Directory domain.
• Perform server and network deployment through the entire product delivery lifecycle to prioritize deliverables, validate product feature sets, and maintain schedule and budget alignment.
• Execute COTS solution integrations by applying system hardening, vulnerability analysis, documentation, and patching.
• Bring systematic, analytical thinking to the diagnosis and resolution of integration issues drawing on creative and innovative problem-solving and documenting resolution paths.
• Maintain configuration management records throughout the build, documenting all decisions, changes, and deviations to provide a complete audit trail.
Verification & Validation
• Verify product feature sets to confirm that functional and cybersecurity capabilities meet acceptance criteria prior to formal test completion.
• Collaborate on development and execution of cybersecurity test procedures mapped through a Requirements Traceability Matrix (RTM), validating component and system-level compliance with all applicable requirements.
• Support Acceptance Testing, conducting vulnerability assessments and security scans, dispositioning all findings.
Onsite Customer System Turn-Up & Support
• Support onsite deployment at customer sites performing physical installation, network commissioning, Active Directory integration, and system configuration in accordance with site-specific cybersecurity commissioning procedures.
• Conduct Site Acceptance Testing (SAT) in coordination with customer security, IT/OT, and operations staff —to diagnose and resolve site-specific integration challenges in real time and communicate technical status, test results, and issue dispositions to applicable stakeholders.
• Train facility personnel on system operation, cybersecurity maintenance, and configuration management practices. Deliver thorough turnover packages.
• Travel up to 25%.
Mirion

About Mirion

Mirion (NYSE: MIR) is a global leader in radiation safety, science and medicine, with a diverse portfolio of products and services that protects people and the planet from the harmful effects of ionizing radiation and accelerates innovation across a diversity of end markets. The Mirion Technologies group provides proven radiation safety technologies that operate with the highest levels of precision – from R&D labs, to critical nuclear facilities, and on the front lines. The Mirion Medical group solutions enhance the delivery and ensure the safety of healthcare, powering the fields of Nuclear Medicine, Radiation Therapy QA, Occupational Dosimetry, and Diagnostic Imaging. In collaboration with our customers, Mirion empowers innovations that deliver vital protection and harness the transformative potential of ionizing radiation to shape our future world. 

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Industry
Manufacturing & Production
Company Size
1,001-5,000 employees
Headquarters
Atlanta, Georgia
Year Founded
Unknown
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