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Senior Network Systems Engineer

Leidos

Posted Friday, August 1, 2025

Posting ID: R-00163610

Ft Meade, MD
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Description

Leidos is seeking an experienced Senior Network Engineer to provide network operations and engineering sustainment support to a mission critical IP messaging and communications transport network. A successful candidate will develop an understanding of the services offered to external organizations, provide lifecycle systems engineering support to development and operations on the program, and use a combination of technical and functional expertise to recommend solutions to satisfy customer requirements.

Primary Responsibilities:
  • Network integration, testing, security engineering, and implementation configuration support.
  • Collaborate with network architects to define and/or continuously improve STIG compliant configuration baselines, versioning, and compliance tracking.
  • Test and validate automation and best practice insertion opportunities.
  • Lead development of SOPs/TTPs.
  • Support Continuous Service Improvements (CSI).
  • Support system performance tuning and enhancements.
  • Create and maintain Engineering Implementation Plans (EIP).
  • Support tier escalation of incident management support tasks.
  • Active participation in Root Cause Analysis (RCA) for Problem Management activities.
  • Participate in engineering meetings to bridge the gap between operations and engineering providing operational readiness for new solutions projected to be deployed into production.
  • Perform highly technical maintenance involving firewalls, VPNs, IPS, and load balancers.
  • Provide expert knowledge of network engineering and operations, large scale enterprise network solution implementation and transition to Network Operations, as well as test and evaluation activities. Perform highly technical maintenance involving network devices routers, switches, security solutions, and WANX.
Core Qualifications:
  • BS degree and 8 to 12 years of prior relevant experience or a Masters with 6 to 10 years of prior relevant experience. (Additional years of related work experience may be substituted for a degree at the Hiring Manager's discretion).
  • Effective written and oral communication and problem-solving skills
  • Active DoD clearance at the Top-Secret level with SCI eligibility
  • Security+ Certification or other DOD 8570 IAT Lvl II Certification within a certain timeframe after starting if not starting with one when hired.
  • Extensive knowledge of defense-in-depth principles, Network and Security architecture, network topology, IT device integrity, and common security elements.
  • 8+ years' experience engineering and troubleshooting networks, including extensive routing and switching experience such as one or more of the following: MPLS, VPNs, routing protocols i.e. BGP, OSPF, IS-IS, switching protocols i.e. Spanning Tree Protocol, VLANs, LLDP, VoIP, Multicast protocols and emerging network technologies.
  • Strong understanding and in-depth knowledge of IP network/subnet addressing.
    Experienced and adept at developing and maintaining technical documents, analyses, and reports.
  • Experience developing and presenting technical information to senior customer management, customer stakeholders, and company management.
  • Hands-on experience deploying, configuring and troubleshooting Cisco enterprise network routing, switching and firewall/security devices.
  • Ability to travel up to 10% OCONUS travel.
Preferred Qualifications:
  • Extensive SME level knowledge of network engineering and operations, integration, test and evaluation activities, as well as implementation and transition to Network Operations processes and concepts
  • Cisco CCNP Route/Switch and/or CCNP Security
  • Experience and with and practical understanding of enterprise WAN principles.
  • Experience with change, configuration and performance management NetOps concepts.
  • IAT Level III Certification (i.e. CISSP or equivalent).
Come break things (in a good way). Then build them smarter.

We're the tech company everyone calls when things get weird. We don't wear capes (they're a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for how it's always been done."

Original Posting:
July 30, 2025
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $89,700.00 - $162,150.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
On-Site
Communication
Performance Management
Operations
Automation
Security Engineering
Root Cause Analysis
Certified Information Systems Security Professional
Customer Relationship Management
Systems Engineering
Problem Solving
Troubleshooting (Problem Solving)
Performance Tuning
Verbal Communication Skills
Virtual Private Networks (VPN)
Firewall
Network Switches
Integration Testing
Incident Management
Problem Management
Network Routing
Top Secret-Sensitive Compartmented Information (TS/SCI Clearance)
Market Data
Virtual Local Area Network (VLAN)
Equities
Service Improvement
Wide Area Networks
Network Engineering
Open Shortest Path First (OSPF)
IT Security Architecture
Defense In Depth
Cisco Certified Network Professional
Network Topology
Border Gateway Protocol
Routing Protocols
Spanning Tree Protocols
Multiprotocol Label Switching
Multicasting
Laminated Veneer Lumber (LVL)
Internet Protocols Suite
Voice Over IP
Link Layer Discovery Protocol
Software Versioning
Transport Networks
Security Solutions

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