Our customer is the Defense Information Systems Agency (DISA) and acts as the provider of GIG/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 GIG capabilities and services in the 24x7 DISA Global Operations Center (DGOC). Shift work to include nights and weekend duty is required. Position may include extended periods of sitting while on a computer or phone and speaking with customers.

The Leidos Digital Modernization Sector and DoD Enterprise and Cyber Operations (DECO) have an opening in our Defense Red Switch Network (DRSN) Support Technician III at Scott AFB, IL.

This position requires U.S. citizenship with an active Top Secret clearance.

Job Responsibilities:

Responsible for performing, training team and developing processes for the following duties:

• Create/update/resolve unclear problems and issues faced, utilizing a broad knowledge of the network architect, utilizing the Service Now platform

• Notify necessary points of contacts based on essential or heightened awareness networks, circuits or location incidents

• Execute network operations to include configuration and analysis of customer circuits across Time Division Multiplexing (TDM) and Session Initiated Protocol (SIP) trunks.

• Work directly with customers, UC stakeholders, and leaders internal and external to the organization across multiple areas to ensure maximum network availability to minimize or eliminate mission and operational impact.

• Proactively monitor network alarms across platform specific network management tools.

• Support all customers to include providing global situational awareness support.

• Verify that service has been restored upon resolution of all customer-initiated tickets

• Provide timely situational awareness to leadership and the impacted community within discovery and ticket creation using approved communication methods as outlined

• Proactively monitor network alarms across platform specific network management tools.

• Record, assess, track, and monitor incident tickets escalated to operational infrastructure.

• Utilize incident management applications to document all aspects of reported outages/degradations, isolations, escalations, and resolutions during the lifecycle of a service impacting network incident.

• Perform configuration maintenance on route plans, route lists device profiles, calling search spaces, and route partitions.

• Utilize incident management applications to document all aspects of reported outages/degradations, isolations, escalations, and resolutions during the lifecycle of a service impacting network incident.

• Assess, identify and recommend resolutions to various network incidents and/or configuration deficiencies

• Develop and/or recommend solutions and processes pertaining to UC and DRSN operations.

Minimum Qualifications:

• Hold DoD-8570 IAT Level 2 baseline certification (Security+ CE or equivalent) prior to start date.

• Able to work in a 24x7 shift work environment.

• Must have an active DoD Top Secret security clearance.

• Requires general understanding of both voice infrastructure and IP network topologies.

Desired Qualifications:

• Tech control facility or cyber transport experience

• Circuit actions experience

• Experience with MS Office suite, i.e. Outlook, Excel, Word, Access, PowerPoint, TEAMs.

• Experience with one or more of the following: alarm surveillance, call routing, session initiated protocol, media call flow, packet capture analysis, Juniper IP technologies

• Knowledge in one or more of following: routers, switches, crypto devices, CISCO, Juniper, video teleconferencing (VTC), voice services, EVoIP/ECVoIP, VoSIP, fly-away kits, Defense Red Switch Network (DRSN), DSN Core.

Required Education & Experience:

• Typically requires high school diploma or equivalent and 2 – 4 years of prior relevant experience.

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Original Posting:

April 10, 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 $48,100.00 - $86,950.00

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.