Unleash Your Potential! At Leidos, we deliver innovative solutions by leveraging our diverse and talented workforce who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.
Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Click here to learn more about how this program "Delivers Mission Success!"
Your Main Objective: Provide network and systems administrator support to the Defensive Network Operations (DNO) program for the development and maintenance of the Innovation and Training Center for mission customers. The DNO program provides trained and equipped remote and deployed teams and operations mangers to conduct cybersecurity assessments in support of intelligence customers, the Defense Industrial Base and Critical Networks and Systems sectors. As well as conducting the following types of assessments in support of the mission customer: Strategic Vulnerability Assessment (Blue Team), Adversary Emulation (Red Team), Target Hunt, Incident Response, Joint COMSEC Monitoring and Operations Management. We are looking for a network engineer to support Cyber Security Defensive Operations with configuration of Cyber Range consisting of 10s to 100s of VMs, physical and virtual network devices, and firewalls utilizing Infrastructure as Code (IaC), Terraform, Ansible, VMWare and other automation technologies. You will work closely with Hunt, Red and Blue Team operators to understand their desired configurations for the Cyber Security Range to support training, force on force exercises, and mimicking of customer infrastructures. You will work with a team of other Software Engineers, System Administrators, Network Engineers and Systems Engineers supporting the Cyber Range and develop innovative solutions to complex problems.
You will be part of a larger development team supporting the Cyber Security Directorate's Defensive Network Operations organization with direct mission support activities when not working on the Cyber Range.
Additional expected tasks include:- Providing Tier 1/2/3 technical services to perform daily monitoring and troubleshooting of the Innovation and Training Center components.
- Provide maintenance and support for active usage of the Innovation and Training Center, this includes building physical and virtual instances for lab, exercise, training, and other use, tearing down the instances after use is completed, and preparing Innovation and Training Center for the next use.
- End user support and troubleshooting during all uses of the Innovationa and Training Center.
- Provide installation, upgrade, maintenance and support, patching, troubleshooting and removal of Innovation and Training Center hardware including servers, switches, routers, and firewalls.
- Configure and administer next generation firewalls (e.g. Palo Alto, McAfee) and suggest new rules, routines, and indicators of compromise.
- Lead network engineering efforts through subject matter expertise and understanding of the system.
- Build and maintain complex Linux systems hardened to meet operational standards. Provide installation, upgrade, maintenance and support, patching, troubleshooting and removal of all Innovation and Training Center software.
- Enable orchestration and automation of the Innovation and Training Center utilizing automation systems such as Puppet, Kickstart, Packer, Terraform, Ansible and Bash/Python scripts.
- Implement a health and status monitoring solution and, Setup and assist with Microsoft Environments (e.g. Group Policy, Active Directory, etc.), container technologies like Docker and Gluster/libvirt Linux knowledge/abilities and similar technologies.
What Sets You Apart:- Bachelor's degree plus 8-years of relevant experience, or master's degree plus 6-years of relevant experience or an associate's degree plus 10-years of relevant experience or high school diploma/GED plus 12-years of relevant experience may be considered.
- Degree must be in Network Engineering, Systems Engineering, Information Technology, or related field.
- Relevant experience must be in computer or information systems design/development, programming, information/cyber/network security, vulnerability analysis, penetration testing, computer forensics, information assurance and/or systems engineering. Additionally, must have experience in network or system administration.
- Current experience with management of virtualized infrastructure, to include multi-node and multi-site networks
- Experience with networking and virtualization
- Experience with building and maintaining networks consisting of physical and virtual equipment
- Experience with standard network services - DNS, DHCP, NTP, Syslog, etc.
- Experience configuring and administering next-generation firewalls (e.g. Palo Alto, McAfee)
- Experience with Infrastructure as Code (IaC)
- Experience with scripting languages such as Bash, PowerShell, Batch, and Python
- Experience with Terraform and Ansible
- Experience with Puppet, Kickstart, Packer
- Experience with cybersecurity tools, network configurations, and operational tools
- Knowledge of operating systems, including Windows and Linux, application behaviors, and network traffic analysis
- Experience in a fast-paced environment and working with flexible customer requirements.
Security Clearance requirement:- Candidates must possess an active TS/SCI with polygraph to be considered for this role.
You Might Also Have:- Experience operating in an agile development environment and DevOps
- Experience with container technologies such as Kubernetes and Docker
- Knowledge of penetration testing or red team operations
- Experience utilizing and development with Splunk
- Experience with Nutanix
- Defensive Cyber Security Operations
Careers.leidos.comconmdAt 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:November 3, 2025
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 $89,700.00 - $162,150.00
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.
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