Defense Red Switch Network (DRSN) Support Technician III

Leidos LLC; Illinois; On-site; USD 65,000 - 75,000; Full time

Job summary

Leidos is seeking a DRSN Support Technician III to join the DGOC at Scott AFB, IL. You will perform network operations, monitor alarms, and coordinate with customers to maintain mission-critical availability. The role requires a TS clearance and DoD-8570 IAT Level 2 certification, with rotation to include nights and weekends.

Responsibilities include incident handling, ServiceNow ticketing, and collaboration across UC and DoD domains to minimize operational impact and restore services promptly.

Qualifications

• DoD-8570 IAT Level 2 baseline certification (Security+ CE or equivalent) prior to start date.
• Able to work in a 24x7 shift work environment.
• Active DoD Top Secret security clearance.
• General understanding of voice infrastructure and IP network topologies.

Responsibilities

• Create/update/resolve issues using network knowledge and ServiceNow.
• Notify contacts based on incidents affecting networks, circuits or locations.
• Operate and analyze customer circuits (TDM, SIP trunks).
• Collaborate with UC stakeholders and leaders to maximize network availability.
• Monitor network alarms using management tools and provide global situational awareness.
• Document outages, escalations and resolutions through incident lifecycle.

Skills

ServiceNow platform

Network monitoring

UC/DRSN operations knowledge

DoD-8570 IAT Level 2

Shift work readiness

Education

High school diploma or equivalent

2–4 years of relevant experience

Tools

ServiceNow

MS Office Suite

Cisco/Juniper networking

Job description

Job Overview

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. Our anticipated salary range for this role is $65,000 - $75,000* This position requires U.S. citizenship with an active Top Secret clearance.

Job Responsibilities

• 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.
• 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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About Leidos

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

August 14, 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

$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.

Company Overview

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 $17.2billion 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 [e-mail].

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.