Senior Network Engineer

ECS Tech Inc•Fairfax, VA

1d•Remote

About The Position

ECS is seeking a highly skilled Network Engineer to support and maintain enterprise network infrastructure across corporate office environments and three geographically distributed data centers. This role is responsible for designing, implementing, securing, and optimizing network systems that support mission-critical operations. The ideal candidate brings strong experience in multi-site networking, data center architecture, and enterprise-grade routing/switching, along with a proactive approach to reliability, security, and performance.

Requirements

Ability to pass background checks comparable to DoD Secret
5+ years of experience in enterprise network engineering
Strong expertise in routing and switching (BGP, OSPF, EIGRP)
Experience with enterprise networking vendors (Cisco, Palo Alto, SonicWall, etc.)
Hands-on experience supporting multi-site WAN environments
Knowledge of data center networking concepts and architectures
Experience with network monitoring and troubleshooting tools
Solid understanding of network security principles

Responsibilities

Design, implement, and maintain network infrastructure across ECS corporate offices and data centers
Manage core networking components, including routers, switches, firewalls, and load balancers
Ensure high availability and performance of WAN/LAN connectivity between sites
Support data center networking, including spine-leaf architecture, VLANs, VXLAN, and segmentation strategies
Monitor network performance and troubleshoot issues across multiple environments
Implement and maintain network security controls (ACLs, firewalls, VPNs, IDS/IPS)
Collaborate with systems, cloud, and cybersecurity teams to support hybrid infrastructure
Perform capacity planning, upgrades, and lifecycle management of network hardware/software
Maintain documentation for network topology, configurations, and standard operating procedures
Support incident response and root cause analysis for network outages