On-Site Senior Network Engineer: Data Center & Cisco ACI

Leidos; Bethesda (MD); On-site; USD 116,000 - 210,000; Full time

Job summary

Leidos is seeking a Senior Network Engineer to join the team on-site at the Intelligence Community Campus in Bethesda, MD. The role focuses on planning, implementing, and sustaining high-availability data center and enterprise networks, including spine-leaf topologies, fabric networks, and secure connectivity across on-premises and cloud environments.

Responsibilities include leading Cisco ACI configurations, firewall/load balancer optimization, performance analysis, and cross-team collaboration

Qualifications

• Proven experience designing, implementing, and maintaining data center network architectures with a focus on scalability, redundancy, and security.
• Hands-on experience with Cisco ACI, Nexus, and Catalyst platforms, including configuration, monitoring, and troubleshooting.
• Strong understanding of TCP/IP, DNS, DHCP, OSPF, BGP, VLANs, HSRP, SNMP, and multicast protocols.
• Proficiency with network monitoring and ITSM tools such as ServiceNow, SolarWinds, and NetBox.
• In-depth knowledge of network security principles, including firewall rules, ACLs, VPNs, and secure remote access.

Responsibilities

• Provide senior-level technical expertise in the design, implementation, and sustainment of highly available, scalable, and secure data center and enterprise network environments.
• Support the planning and integration of LAN/WAN infrastructure, ensuring seamless and secure connectivity among on-premises systems, cloud environments, and external mission networks.
• Provide technical leadership in the configuration, optimization, and troubleshooting of Cisco ACI, routers, switches, firewalls, and load balancers in support of mission-critical operations.
• Analyze and optimize network connectivity and performance across servers, storage, hypervisors, and data center interconnects to support network throughput, availability, and reliability requirements.
• Oversee the use of network monitoring and ITSM tools such as ServiceNow, SolarWinds, NetBox, and PRTG to monitor network health, availability, performance, and incident resolution.

Skills

Cisco ACI

Nexus & Catalyst

TCP/IP & routing protocols

Network security principles

ITSM concepts

Education

Bachelor’s degree and 12+ years of relevant experience

Tools

ServiceNow

SolarWinds

NetBox

PRTG

Job description

Leidos is seeking a Senior Network Engineer to join the team on-site at the Intelligence Community Campus in Bethesda, MD. The role focuses on planning, implementing, and sustaining high-availability data center and enterprise networks, including spine-leaf topologies, fabric networks, and secure connectivity across on-premises and cloud environments.

Responsibilities include leading Cisco ACI configurations, firewall/load balancer optimization, performance analysis, and cross-team collaboration