Senior Network Engineer: Data Center & Security (On-Site)

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

Job summary

Leidos is seeking a Senior Network Engineer to support the National Digital Exploitation & OSINT Center (NDOC) at the Intelligence Community Campus in Bethesda, MD. You will design, implement, and sustain highly available data center and enterprise networks.

This on-site role requires DoD 8140/8570.11 IAT Level II certification (Security+ CE, CCNA Security, GSEC, or SSCP), TS/SCI with poly, a Bachelor’s degree, and 12+ years of applicable experience.

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.
• Familiarity with network asset lifecycle management, capacity planning, and hardware procurement processes.
• Experience leading teams and managing performance under shifting operational priorities.
• Excellent written and verbal communication skills, with the ability to brief senior leadership and government stakeholders.
• Candidate must meet DoD 8140/8570.11‑ IAT Level II certification requirements (Security+ CE, CCNA Security, GSEC, or SSCP) with a valid Computing Environment (CE) certification.

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.
• Lead technical troubleshooting and incident resolution for complex network and data center issues, coordinating root cause analysis, corrective actions, and recovery activities as appropriate.
• Develop and maintain contingency and continuity plans and procedures to support network resilience and minimize service disruptions during outages, maintenance events, and other operational activities.
• Provide technical oversight of network infrastructure standards and practices, including cabling, patch management, structured wiring, equipment configuration, documentation, and data center operations.
• Analyze network segmentation, performance, capacity, and latency requirements and recommend optimization strategies across physical and virtual environments.
• Coordinate with IT, Systems Engineering, Cybersecurity, and Application teams to support cross-functional projects and ensure network implementations align with established security, technical, and mission requirements.

Skills

Data center networking

Cisco ACI/Nexus/Catalyst

TCP/IP routing protocols

Network monitoring tools

Network security fundamentals

Capacity planning

Team leadership

Effective communicator

DoD 8140/8570 II cert

Education

Bachelor’s degree

Tools

ServiceNow

SolarWinds

NetBox

Job description

Leidos is seeking a Senior Network Engineer to support the National Digital Exploitation & OSINT Center (NDOC) at the Intelligence Community Campus in Bethesda, MD. You will design, implement, and sustain highly available data center and enterprise networks.

This on-site role requires DoD 8140/8570.11 IAT Level II certification (Security+ CE, CCNA Security, GSEC, or SSCP), TS/SCI with poly, a Bachelor’s degree, and 12+ years of applicable experience.