Network Systems Engineer

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 Sytems 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

• 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. 4+ 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. Effective
• written and oral communication and problem-solving skills 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). Required Education & Experience:
• Requires BS and 4-8 years of prior relevant experience or Masters with 2-6 years
• of prior relevant experience. (Or equivalent combination of education and/or
• experience.) GSMO If you're looking for comfort, keep scrolling. At Leidos, we
• outthink, outbuild, and outpace the status quo — because the mission demands it.
• We're not hiring followers. We're recruiting the ones who disrupt, provoke, and
• refuse to fail. Step 10 is ancient history. We're already at step 30 — and
• moving faster than anyone else dares. Original Posting: May 5, 2026 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 $73,450.00 - $132,775.00 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. Leidos Leidos is an industry and technology leader serving government and
• commercial customers with smarter, more efficient digital and mission
• innovations. Headquartered in Reston, Virginia, with 47,000 global employees,
• Leidos reported annual revenues of approximately $17.2 billion for the fiscal
• year ended January 2, 2026. For more information, visit www.Leidos.com. Pay and

Benefits

Pay and benefits are fundamental to any career decision. That's why we

craft compensation packages that reflect the importance of the work we do for

our customers. Employment benefits include competitive compensation, Health and

Wellness programs, Income Protection, Paid Leave and Retirement. More details

are available here. Securing Your Data Leidos will never ask you to provide

payment-related information at any part of the employment application process.

And Leidos will communicate with you only through emails that are sent from a

Leidos.com email address. If you receive an email purporting to be from Leidos

that asks for payment-related information or any other personal information,

please report the email to [email protected]. Commitment and Diversity All

qualified applicants will receive consideration for employment without regard to

sex, race, ethnicity, age, national origin, citizenship, religion, physical or

mental disability, medical condition, genetic information, pregnancy, family

structure, marital status, ancestry, domestic partner status, sexual

orientation, gender identity or expression, veteran or military status, or any

other basis prohibited by law. Leidos will also consider for employment

qualified applicants with criminal histories consistent with relevant laws.