The Digital Modernization Sector at Leidos has an opening for a senior Network Engineer on the DISA Defense Red Switch Network team in support of an enterprise VoIP management system – GSM-O II contract at Fort Meade, MD. To be successful in this role, you have a Network Engineering background responsible for the design, document, test, deployment and maintenance of the IP network solutions within an enterprise environment on a high-paced, fast-moving program. This position requires U.S. citizenship and an active Top Secret with SCI eligibility.
As a Network Engineer, the successful candidate will be a part of a team that interacts with both technical and non-technical stakeholders, including customers and vendors but primarily with subject matter expert teammates. In this role, the candidate will be a subject matter expert (SME) in all things related to the IP Network technologies, ensuring optimal performance, security, and scalability of WAN and LAN infrastructure across multiple environments (DEV/TEST and Production). The candidate will also provide technical assistance, administer configurations, upgrade software, develop and/or update related documentation, ensure applicable STIGs are applied and documented, conduct and support testing on work performed, recommend enhancements, and troubleshoot and resolve issues associated with the various network components.
Responsibilities:
Work closely with DRSN engineers and site personnel for coordinating deployments and maintenance actions.
Evaluate system network requirements and make appropriate technical recommendations.
Proficiency with Juniper networking devices to include establishing remote management connectivity, updating the operating systems, coordinating and performing verification test (BER or "burn-in" tests) configuring alarm and system profiles, and configuring/testing various layers of the OSI model.
Assist IA personnel regarding network security and SSP maintenance. Ensure that the network configuration meets all IA requirements.
Perform installation test and acceptance (IT&A) of network components both directly through the various GUI/CLI or interface systems, by directing and/or facilitating remote testing with on-site field engineering support.
Monitor network performance.
Support deployments as required.
Expert Knowledge of IP principles
Required Skills:
Bachelor's degree and 8+ years of overall related experience or Master with 12+ years. Specific experience, education and training may be considered in lieu of degree.
Experience in remotely configuring networking or transport devices.
Ability to map IP addresses and subnets for networking devices or ability to establish in-band/out of band management connections on transport devices.
Ability to interpret network topology diagrams and proposed device configuration changes.
Knowledge of configuring, deploying and supporting HAIPE (KG-175D)- especially with GD GemOne.
Security+
Must possess an active Top Secret with SCI eligibility clearance.
Must possess current DoD 8750 certification at IAT level II, Security +ce
Proficiency with Juniper IOS or other IP/transport specific management tools (EMS) and general practices.
Basic Linux Administration or command line interface (CLI) and scripting skills.
Desired Skills:
Experience managing configurations with JunOS space
Expertise in IP technologies, i.e. Networking architectures and methodologies and Voice Services
Proficiency in at least two or more of the following devices: SONUS SBC, Juniper MX5 routers, Juniper SRX firewalls, Juniper EX switches, SONUS SBCs, KG175
Proficiency in at least one of the following tools: SolarWinds or Junos Space
JNCIA or JNCIP
Proficiency with RADIUS, SNMP, and NTP protocols
General knowledge of TLS and PKI
GSMO
At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”
If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.
Original Posting:October 23, 2025For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
