Senior Network Engineer

# Senior Network Engineer Leidos Full  Time senior Bethesda, Maryland, USPosted Yesterday##

Role Overview Leidos is hiring a Senior Network Engineer. This is a full-time role in Bethesda. Part of Leidos's Security hiring, posted yesterday. Full responsibilities, required qualifications, and the apply link are listed in the description below.## Salary Context Salary is not disclosed in this posting. Market median for Senior-level Security roles is $130k-$175k (based on 108 comparable listings). Many employers share specifics during the interview process or after an initial screen.##

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Job Description ### Description Leidos is looking to fill a Network Engineer position to support the National Digital Exploitation & OSINT Center (NDOC). The Network Engineer supports the planning, coordination, and execution of major computer network initiatives.

This is a 100% on-site position. All work must be performed at the customer site in Bethesda at the Intelligence Community Campus.### Primary Responsibilities
* Design, implement, and maintain highly available, scalable, and secure data center and enterprise network architectures, including spine-leaf topologies, virtualized environments, and fabric networks.
* Plan, integrate, and sustain LAN/WAN infrastructure with seamless connectivity between on-premises systems, cloud environments, and external mission networks.
* Configure and maintain Cisco ACI, routers, switches, firewalls, and load balancers in support of mission-critical operations.
* Manage connectivity and performance across servers, storage, hypervisors, and data center interconnects to ensure optimal network throughput and reliability.
* Utilize network monitoring and ITSM tools such as Service Now, Solar Winds, Net Box, and PRTG to track network health, availability, and incident resolution metrics.
* Lead troubleshooting and incident resolution for complex network and data center issues, including root cause analysis and recovery planning.
* Develop and execute contingency and continuity plans to ensure network resilience and minimal downtime during outages or maintenance events.
* Oversee network cabling standards, patch management, and structured wiring practices to support consistent data center operations.
* Implement network segmentation, performance tuning, and latency optimization strategies across physical and virtual environments.
* Coordinate closely with IT, Systems Engineering, Cybersecurity, and Application teams to support cross-functional projects and ensure network compliance with security and mission requirements.
* Manage and assign work through Service Now ITSM, ensuring incidents and change requests are properly documented and resolved within SLA.
* Provide status reports, incident summaries, and performance metrics to program and executive leadership.
* Lead or support network modernization and data center consolidation initiatives, ensuring projects meet technical, budgetary, and schedule requirements.
* Evaluate and recommend emerging network technologies that improve data center efficiency, scalability, and cybersecurity posture.
* Supervise and mentor network engineers and technicians, providing technical leadership and professional development.
* Assist leadership with planning schedules and ensure proper personnel coverage for support activities.
* Responsible for evaluating resumes for vacancies and serving as a key component during candidate interviews.
* Manage work performance for subordinates, provide periodic feedback, and document performance against employee's goals and corporate guidelines.
* Review and approve timesheets for assigned subordinates in compliance with corporate standards.
* Maintain flexibility to provide after-hours or on-call support in the event of critical outages.### Basic 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 Service Now, Solar Winds, and Net Box.
* 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-…