Network & Security Engineer
On-site · Dallas, Texas, United States
Job Summary
Own the design, operation, and security of Citadel’s network and identity infrastructure across multiple sites, including firewalls, switching, wireless, VOIP, and endpoint identity; serve as the internal technical counterpart to the SOC/MDR provider; lead network design and upgrades, ensure secure connectivity between sites, the cloud, and remote users; manage vulnerability management, incident response, and security policy across Microsoft 365 (Defender for Endpoint, Entra ID, Intune); collaborate with IT leadership, vendors, and external partners; travel between sites during standardization/turn-up phases and for ongoing site support.
Required Qualifications
- Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, Network Engineering, or a related technical discipline. Equivalent professional experience considered in lieu of degree.
- 7+ years of progressive experience in enterprise network engineering and information security.
- Hands-on experience designing, deploying, and operating enterprise networks, including next-generation firewalls (Palo Alto or comparable), enterprise switching (Cisco or comparable), and wireless (Meraki or comparable).
- Hands-on experience with endpoint security platforms, including Microsoft Defender for Endpoint and modern identity and access management (Microsoft Entra ID, conditional access, multi-factor authentication).
- Experience operating in partnership with a managed detection and response (MDR) provider or security operations center (SOC).
- Experience with vulnerability management, including scanning tooling (Tenable Nessus or comparable), prioritization, and driving remediation across an organization.
- Experience operating in an environment with regular external security assessments (penetration testing, cyber insurance reviews, customer security audits) and remediating findings under deadline.
- Experience supporting multi-site operations or production environments where uptime, security, and consistency of service are operational requirements.
- Experience delivering IT projects from scope through completion, including scheduling, vendor coordination, and budget tracking.
- Demonstrated ability to communicate technical concepts clearly to non-technical business stakeholders and to senior leadership.
- Demonstrated experience adhering to and enforcing security best practices across network, endpoint, and identity domains.
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