Network Engineer (TS/Q Clearance required)

Network Engineer GDIT is seeking an experienced Network Engineer to support mission‑critical operations for the Department of Energy’s National Nuclear Security Administration (NNSA). In this role you will design, implement, maintain, and troubleshoot complex Cisco network systems to ensure optimal performance, security, reliability, and scalability. Responsibilities Infrastructure Design & Implementation: design, build, and implement network systems for LAN, MAN, and WAN environments, ensuring they meet performance and scalability requirements. System Monitoring & Troubleshooting: monitor and diagnose network issues, performing root‑cause analysis to address connectivity problems and optimize operations. Traffic Analysis & Capacity Planning: analyze network traffic patterns and provide capacity planning solutions to support infrastructure growth and performance improvements. Vendor Coordination: interface with vendor support services to ensure timely resolution of issues and proper escalation during outages or performance degradations. System Configuration: perform system‑level design and configuration, determining hardware, operating systems, and platform specifications to meet operational requirements. Quality Assurance: evaluate and test new and existing network products and technologies, ensuring they align with organizational standards and quality protocols. Network Operations Oversight: provide technical assistance and oversight across all network operations, including LAN/MAN/WAN administration, security protocols, and systems integration. Policy Input: contribute to policy discussions by providing insights on standards, technical constraints, and budget considerations impacting network operations. Testing & Optimization: conduct routine testing and analysis of network hardware, communications systems, and connectivity components. Performance Enhancements: identify opportunities for network optimization and implement improvements to maximize system performance and security. Documentation: create and maintain detailed documentation for network configurations, processes, and procedures to support operational consistency. Minimum Qualifications Education: bachelor’s degree or equivalent years of experience. Experience: 12 or more years of professional experience in network engineering, infrastructure design, and circuit troubleshooting involving routing & switching protocols. Security Clearance: DOE Q or TS clearance required. Technical Expertise: deep knowledge of Cisco routers, switches, firewalls, wireless technologies, and network design principles; experience with Juniper and Palo Alto is a plus. Protocols: proficiency in BGP, OSPF, EIGRP, STP, RSTP, VXLAN, and LACP; understanding of network security practices, including system hardening and compliance with organizational standards. Preferred Qualifications DOE Experience: previous experience working with the Department of Energy or similar federal agencies. DNS & Configuration Expertise: familiarity with Microsoft DNS and Unix BIND systems. Compliance Standards: experience with DISA STIGs and other security frameworks required for federal compliance. Cisco Certification: CCNA, CCNP, CCDA, CCIE, or other Cisco certification. Work Locations Onsite at client sites in Germantown, MD; Albuquerque, NM; and Denver, CO. Compensation Salary range: $110,500 - $149,500, subject to experience, geographic location, and contractual requirements. Benefits Competitive compensation and performance‑based pay. Health, dental, and vision plans with optional Health Savings Account. 401(k) plan with company match. Paid time off, including vacation, sick leave, holidays, and family leave. Short‑ and long‑term disability, life, accidental death and dismemberment, and travel insurance. Full‑flex work weeks where possible. Equal Opportunity Employer GDIT is an Equal Opportunity Employer. We value diversity and inclusion and encourage individuals with disabilities and veterans to apply. #J-18808-Ljbffr General Dynamics Information Technology