Senior Network Engineer with Security Clearance
Job in
San Antonio, Bexar County, Texas, 78201, USA
Listed on 2026-08-21
Listing for:
Anonymous Employer
Full Time
position Listed on 2026-08-21
Job specializations:
-
IT/Tech
Cybersecurity, Network Engineer, Network Security, Systems Engineer
Job Description & How to Apply Below
We are seeking an experienced Network Engineer I to support the design, implementation, operation, and sustainment of complex enterprise and mission-critical networks. This role requires a strong background in network architecture, cybersecurity, systems administration, and troubleshooting within highly secure environments.
The ideal candidate will serve as a technical leader responsible for network design, integration, optimization, and security while collaborating with cross-functional engineering and cybersecurity teams. Responsibilities
• Design, implement, and maintain secure enterprise network infrastructures.
• Provide network architecture designs, implementation plans, and technical documentation.
• Develop and maintain network schematics, addressing plans, routing strategies, and configuration baselines.
• Install, configure, and troubleshoot routers, switches, firewalls, VPNs, and other networking technologies.
• Conduct testing, validation, performance analysis, and failover assessments.
• Monitor and optimize network performance, reliability, and security.
• Support network modernization efforts, migrations, and infrastructure upgrades.
• Implement cybersecurity controls and secure network configurations aligned with industry best practices.
• Collaborate with systems, cybersecurity, software, and test engineering teams to support mission objectives.
• Evaluate emerging technologies and recommend solutions that enhance network capabilities.
• Participate in troubleshooting and incident response activities across Layers 1–7.
Required Qualifications
• Bachelor's degree in Science, Technology, Engineering, Mathematics (STEM), Information Technology, or a related field and 8+ years of relevant experience; OR
• Master's degree and 6+ years of relevant experience; OR
• PhD and 4+ years of relevant experience.
• Active U.S. Top Secret clearance with SCI eligibility/access.
• DoD 8570 IAT Level II certification (Security+ CE or equivalent).
• Hands-on experience planning, implementing, operating, and troubleshooting routed and switched IP networks.
• Experience supporting: ○ IPv4 networking ○ OSPF routing ○ VLANs ○ VPN technologies ○ Firewalls
• Experience administering Microsoft and Linux-based systems.
• Knowledge of cybersecurity principles, system hardening, and secure network operations.
Preferred Qualifications
• Cisco CCNP, CCIE, or equivalent advanced networking certification.
• Experience serving as a lead network engineer or network design authority.
• Expertise with: ○ Cisco routing and switching ○ Enterprise firewalls ○ VMware vSphere, ESXi, and NSX ○ IDS/IPS technologies ○ Network Access Control (NAC)
• Experience with: ○ DNS, DHCP, NTP ○ RADIUS and TACACS+ ○ Active Directory integration
• Knowledge of DISA STIGs, RMF, ATO processes, and security compliance frameworks.
• Experience designing segmented and multi-domain network architectures.
• Network automation experience using: ○ Ansible ○ Python ○ Bash ○ Power Shell
• Experience with Infrastructure as Code and configuration management.
• Background supporting Network Operations Centers (NOCs) and complex operational environments.
• Experience working with high-availability, real-time, or mission-critical systems.
Knowledge of VoIP, SIP, QoS, and converged voice/data networks. Compensation: $110,000 - $155,000, commensurate on experience.
Position Requirements
10+ Years
work experience
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