Demo

Network Systems Administrator

Oak Ridge National Laboratory
Oak Ridge, TN Full Time
POSTED ON 6/28/2026
AVAILABLE BEFORE 7/28/2026
Requisition Id 16637

Overview:

The Information Technology Services Directorate (ITSD) in the Digital Services Infrastructure and Operations Division at the Oak Ridge National Laboratory (ORNL) is seeking qualified applications for the position of Network Engineer. The position's primary work duties are network engineering, system administration, and providing technical consulting to various work-for-others projects.

Major Duties/Responsibilities:
  • Management Cisco Identify Service Engine (ISE), Networking operations.
  • Network design, configuration and troubleshooting.
  • Lead daily secure operations of the network enclaves.
  • Provide coordination, notification, escalation and documentation to resolve events/issues, efficiently minimizing customer impact.
  • Interface with and provide outage reports to various levels of management.
  • Assist with other tasks as needed or as assigned by management.
  • Ensure systems are configured and maintained per cyber security common control requirements so that accreditation is retained.
  • Create and maintain infrastructure documentation as it relates to infrastructure systems design, configuration, support, and processes.
  • Identify, create, communicate, and implement process engineering for technologies to create end-to-end service offerings.
  • Conduct research, cost-benefit and return-on-investment analysis on proposed hardware, software and systems to justify recommendations, support purchasing efforts, and aid management in making infrastructure design and architecture decisions.
  • Manage capacity and performance of the WAN/LAN network platforms, ensuring the integrity of the infrastructure.
  • Proactively monitor, test, collect and analyze system performance statistical data to improve quality of the network environment.
  • Diagnose and resolve complex configuration and troubleshooting issues within a multi-vendor infrastructure.
  • Mentor and train junior-level staff on network design, configuration and troubleshooting.
  • Adhere to a customer service focused culture.
  • Deliver ORNL's mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace - in how we treat one another, work together, and measure success.

Basic Qualifications:
  • BS degree in engineering, computer science, or a related field with a minimum of 8 years of relevant experience. An equivalent combination of education and experience may be considered.
  • Experience with routing protocols (OSPF, BGP, etc.).
  • ISE Experience Required.
  • Experience in Microsoft Visio.

Preferred Qualifications:
  • Demonstrated problem-solving skills and the ability to visualize a problem or situation and think abstractly to solve it.
  • Cisco and Arista Data Center switching experience highly desired.
  • Knowledgeable in the use of network and configuration management. Working knowledge of Cisco IOS, Arista, JUNOS, routers, multilayer switch, and layer 2 & 3 switch configuration and deployments.
  • Knowledge of Cisco, Arista and Juniper Routers/Switches including Catalyst, Nexus, MX, EX, SRX.
  • Knowledge of Python, REST-API, Shell Scripting and other scripting languages highly desired.
  • Ability to handle constantly changing work priorities, to be able to multitask effectively during busy times, and to exercise patience and professionalism during stressful situations.
  • Ability to work responsibly with or without supervision.
  • Familiarity with JSON and YAML data structures.
  • Network Security knowledge, including familiarity with Zero Trust.
  • Design, implement, and operate a multi-datacenter network.
  • Familiarity with IPv6 implementations.
  • Experience with vulnerability scanning.
  • Effective oral communication and technical writing skills.

Special Requirements:
  • Visa sponsorship: Visa sponsorship is not available for this position.
  • Q Clearance: This position requires the ability to obtain and maintain a clearance from the Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program.

About ORNL:

As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation's most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.

ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well-being of you and your family. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also available for added convenience.

Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.

If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email:

This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer.

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