Network Systems Engineer

Overview

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the Department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services.

The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract — Leidos is seeking an experienced Network Systems 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.

• Network integration, testing, security engineering, and implementation configuration support.
• Collaborate with network architects to define and 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 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.

• Active DoD clearance at the Top-Secret level with SCI eligibility.
• Security+ Certification or other DoD 8570 IAT Level II Certification within a timeframe after starting if not already held at hire.
• Extensive knowledge of defense-in-depth principles, network and security architecture, network topology, IT device integrity, and common security elements.
• 8+ years of experience engineering and troubleshooting networks, including extensive routing and switching experience (e.g., MPLS, VPNs, BGP, OSPF, IS-IS, Spanning Tree Protocol, VLANs, LLDP, VoIP, Multicast) and emerging network technologies.
• Strong understanding of IP network/subnet addressing. Experience 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.
• Effective written and oral communication and problem-solving skills.

• 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 with and practical understanding of enterprise WAN principles.
• Experience with change, configuration and performance management Net Ops concepts.
• IAT Level III Certification (e.g., CISSP or equivalent).

Requires BS and 4-8 years of prior relevant experience or Master’s with 2-6 years of prior relevant experience (or equivalent combination of education and/or experience).

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, Leidos employs a global workforce. For more information, visit

Pay range: $73,450.00 – $. The pay range for this job level is a general guideline and not a guarantee of compensation. Benefits details are available at

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.