Senior Network Engineer L3 | TS/SCI Poly Required

Emtakllc; Maryland; On-site; USD 110,000 - 150,000; Full time

Job summary

Emtakllc is seeking a Network Engineer L3 to support full lifecycle enterprise network operations—design, implementation, maintenance, and modernization. The ideal candidate will translate mission needs into scalable, secure network solutions and work across LAN/WAN environments.

Required TS/SCI with Polygraph clearance, and hands-on experience with Arista EOS, Cisco IOS/NX-OS, and network hardening. This role demands strong analytical skills and cross-site coordination.

Qualifications

• BS degree with 12+ years of relevant experience, or ND with 16+ years.
• TS/SCI clearance with polygraph is required.
• Strong knowledge of LAN/WAN design and secure network protocols.

Responsibilities

• Design, implement, maintain, and upgrade network services across the full lifecycle.
• Analyze network designs, specifications, and engineering documents.
• Administer LAN/CAN/WAN networks to ensure stable and secure operations.
• Schedule and execute migrations and cutovers; coordinate with sites and stakeholders.
• Translate mission requirements into robust telecommunications solutions.

Skills

Arista EOS

Cisco IOS

NX-OS

Network hardening

VPN

QoS

Network slicing

Segmentation

Wireshark

Tcpdump

NetFlow

Education

BS Degree

ND Degree

Tools

Wireshark

Tcpdump

NetFlow

Job description

Emtakllc is seeking a Network Engineer L3 to support full lifecycle enterprise network operations—design, implementation, maintenance, and modernization. The ideal candidate will translate mission needs into scalable, secure network solutions and work across LAN/WAN environments.

Required TS/SCI with Polygraph clearance, and hands-on experience with Arista EOS, Cisco IOS/NX-OS, and network hardening. This role demands strong analytical skills and cross-site coordination.