Transport Network Engineer Intern

Leidos; Shiloh (IL); On-site; USD 48,000 - 87,000; Full time

Job summary

Leidos, a leading defense, intelligence, and technology company, offers a Summer 2027 Internship Program for aspiring engineers. As a Transport Network Engineer Intern, you will join the GSM-O II contract at Scott AFB, IL, gaining hands-on experience with the DISN transport infrastructure.

You will learn to troubleshoot optical platforms, monitor traffic, and assist in fault isolation across SONET, DWDM, and TDM, while documenting work in ServiceNow ITSM and supporting ASI activities.

Qualifications

• Foundational understanding of TCP/IP and OSI model.
• Strong analytical problem-solving and attention to detail.
• Collaborative team player with good written and verbal communication.

Responsibilities

• Assist senior engineers in design, development, and modification of network management systems.
• Support deployment of new network hardware on operational nodes.
• Learn to monitor changes, analyze traffic, and assess impacts on network stability.
• Assist fault isolation and troubleshooting across transport platforms (SONET, DWDM, TDM).
• Develop documentation in ServiceNow ITSM.
• Support ASI activities by collecting site and device data for maintenance scheduling.

Skills

Networking basics

Analytical thinking

Teamwork & communication

Education

Network Engineering or related field

Tools

ServiceNow ITSM

Optical transport systems

Job description

Leidos, a leading defense, intelligence, and technology company, is seeking motivated and aspiring engineering students for our Summer 2027 Internship Program (Starts May 2027). As a Transport Network Engineer Intern, you will join our Digital Sector on the Global Solutions Management – Operations II (GSM-O II) contract at Scott AFB, IL. This is a unique opportunity to gain hands‑on experience supporting the core transport layer of the Defense Information System Network (DISN) in direct support of the Defense Information Systems Agency (DISA).

Your Opportunity:

Are you interested in the hardware and optical systems that form the backbone of a global network? As a member of our Operational Engineering team, you will be embedded directly with the engineers responsible for the health and performance of the DISN’s transport infrastructure. You will learn how to troubleshoot complex optical platforms, support network upgrades, and analyze traffic to ensure the reliability of critical military communications.

What You’ll Do (Potential Projects & Learning Opportunities):

• Assist senior engineers in the design, development, and modification of network management systems.
• Gain hands‑on experience by supporting the deployment of new network hardware (shelves, cards) on operational nodes.
• Learn to monitor network changes, analyze traffic behavior, and identify potential impacts to network stability.
• Assist in performing fault isolation and troubleshooting across various transport platforms (e.g., SONET, DWDM, TDM).
• Develop skills in maintaining accurate and detailed documentation in ServiceNow ITSM.
• Support Authorized Service Interruption (ASI) activities by helping to collect site and device data to schedule maintenance.

What You’ll Bring (Required):

• Citizenship & Clearance:Must be a U.S. citizen andeligible to obtain a DoD Secret security clearance.
• Education:Currently pursuing a degree in a relevant field such as Network Engineering, Computer Engineering, Information Technology, or a related discipline.
• Technical Foundation:A foundational understanding of basic networking concepts (e.g., TCP/IP, OSI model) and a strong desire to learn about optical transport systems.
• Analytical Mindset:A proactive approach to problem-solving, a keen attention to detail, and strong analytical skills.
• Teamwork:A collaborative attitude with excellent written and verbal communication skills.
• Location:This internship is basedon-site at Scott AFB, Illinois.All work must be performed on site – no teleworking opportunities. Candidates must be in the St. Louis Metro area and have their own transportation.

What We Want (Desired):

• Certifications:Obtaining aCompTIA Security+certification (or any certification that aligns with DoD 8570 IAT Level II) before the start date isstrongly encouraged.
• Hands-On Experience:Experience from home labs, class projects, or prior internships involving network hardware or troubleshooting.
• Familiarity with:
  • Optical networking concepts (e.g., SONET, DWDM).
  • Using ITSM or ticketing systems like ServiceNow.
  • Working in a team-based, operational environment.

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:

August 26, 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 onlyand 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.