Telecommunications Network Engineer Jobs in California

Position Title: Lead Telecommunications / Network Infrastructure Engineer
Location: San Diego, CA (100% Onsite)
Clearance Requirements: Active Secret Clearance (Required)
Position Status: Full Time
Pay Rate: $160,000 – $170,000 annually
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Position Description:
We are seeking a Lead Telecommunications / Network Infrastructure Engineer to drive mission-critical network infrastructure initiatives in a secure DoD environment. This role blends physical network infrastructure leadership (Inside Plant / Outside Plant) with enterprise Layer 2–4 network engineering, supporting high-availability systems in classified environments.
This is a hands-on technical leadership role ideal for a senior network engineer who thrives overseeing structured cabling operations while architecting secure VLAN, routing, and segmentation strategies. Key Responsibilities:
Physical Infrastructure Leadership (Primary Focus)
• Lead and direct ISP/OSP structured cabling teams supporting enterprise and classified environments
• Oversee fiber backbone and copper distribution design, installation, and certification
• Develop and enforce structured cabling standards (TIA/EIA, NEC compliance)
• Validate termination, labeling, testing (OTDR, fiber certification, copper analyzers), and documentation
• Review as-built drawings, cable schedules, and infrastructure diagrams
• Coordinate outage windows, cutovers, and infrastructure upgrades with minimal operational disruption
• Ensure compliance with DoD security standards, DISA STIGs, and RMF controls
Network Engineering (Layers 2–4)
• Design and implement VLAN architectures and network segmentation strategies
• Configure Layer 2 switching, trunking, spanning tree, and QoS
• Develop IP addressing schemes, subnetting, and Layer 3 routing configurations
• Troubleshoot across OSI Layers 1–4 (physical through network layer)
• Configure routing protocols, ACLs, and secure traffic flows
• Perform network performance analysis and infrastructure capacity planning
Operational & Compliance Oversight
• Serve as the technical authority for network infrastructure and cabling environments
• Support vulnerability remediation and secure configuration baselines
• Maintain accurate network documentation and change management records
• Support incident response and root cause analysis for infrastructure outages
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Required Skills/Education:
• Active Secret clearance
• IAT Level II Certification (Security+, CySA+, CCNA-Security, GSEC, SSCP, or equivalent)
• 8+ years of enterprise network engineering experience
• Extensive leadership experience managing ISP/OSP structured cabling teams
• Deep knowledge of fiber optic and copper infrastructure standards (TIA/EIA)
• Strong hands-on experience with VLAN design, Layer 2 switching, and Layer 3 routing
• Proven ability to troubleshoot across physical and logical network layers Preferred Qualifications:
• Cisco CCNP or higher (Enterprise or equivalent)
• Experience supporting classified or secure DoD enclaves
• Fiber backbone design and data center infrastructure buildout experience
• Experience with network monitoring, infrastructure documentation, and capacity planning tools
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About Seneca Resources
At Seneca Resources, we are more than just a staffing and consulting firm — we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.
When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.
Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.