Cybersecurity Network Administrator

Position Summary

As the Information Systems Security Manager (ISSM), I’m seeking a highly skilled Network Administrator to join our contractor team in supporting the design, implementation, and sustainment of our classified SIPRNet infrastructure. This role is mission-critical and focused on maintaining system integrity, security compliance, and operational availability for sensitive network environments.

CLEARANCE REQUIREMENT :

Active Secret Clearance : U.S. Citizenship is required

Duties And Responsibilities

• Evaluate cybersecurity requirements and implement into necessary processes and systems.
• Characterize cyberattacks surface.
• Administer, monitor, and maintain SIPRNet systems, including switches, routers, firewalls, and encrypted communication devices.
• Implement, configure, and troubleshoot network hardware and software aligned with DoD standards.
• Apply STIGs and security controls for SIPRNet systems in compliance with RMF and DoD cybersecurity guidance.
• Ensure proper access controls, audit logs, and system hardening procedures are enforced.
• Maintain network documentation including diagrams, change logs, and security reports.
• Provide Tier II / III support and respond to system outages or anomalies swiftly.
• Collaborate with cybersecurity staff to support continuous monitoring, vulnerability remediation, and risk assessments.
• Coordinate with the Defense Information Systems Agency (DISA) and other agencies for connectivity, accreditation, and compliance issues.
• Assisting with forensic investigation.
• Identify and analyze cooperative vulnerability.
• Develop system cross-functional cyber analysis.
• Advise on RMF compliance tasks / documents (security assessment plan, etc.).
• Security configuration management (assess planned services for risk and impact).
• Design, develop, and implement system security measures that meets technical requirements.
• Develop approaches to mitigate system vulnerabilities.
• Additional duties as assigned.

Qualifications