<p>Leidos has an immediate need for a <span>Senior RONIN Network Security Engineer on our AGUN Program.</span></p><p></p><p><b>PROGRAM SUMMARY:</b></p><p>The AGUN program is a highly demanding mission requiring expert technical and professional management to support the Army’s global wide area network and security infrastructure. The RONIN (Resilient Operations Network Integration Node) initiative provides a secure, resilient, and adaptive networking environment that ensures mission continuity and assured communications across all Army network domains. This position supports the RONIN engineering and operational teams to sustain and enhance the AGUN enterprise through resilient design, secure integration, and agile response capabilities.</p><div></div><div>​<b>Location:</b> 100% Remote (with limited travel as required)</div><div></div><p><b>CLEARANCE REQUIREMENT:</b></p><ul><li>Must currently possess and be able to maintain an active <b>DoD SECRET</b> security clearance.</li></ul><div></div><p><b>PRIMARY RESPONSIBILITIES:</b></p><ul><li>Engineer, operate, and maintain secure <b>RONIN network security solutions</b> within the AGUN enterprise, ensuring mission assurance and network resilience across distributed Army environments.</li><li>Partner with AGUN stakeholders and technical teams to integrate RONIN capabilities into existing and emerging network architectures to enhance operational continuity.</li><li>Analyze and optimize complex firewall and segmentation policies supporting secure, dynamic node-to-node interconnectivity under contested or degraded conditions.</li><li>Support implementation of <b>Zero Trust Network Access (ZTNA)</b> frameworks and adaptive routing technologies that enhance RONIN node performance and survivability.</li><li>Lead troubleshooting and mitigation of high-impact network and security events affecting RONIN operations, coordinating with the AGUN Cybersecurity Service Provider (CSSP).</li><li>Integrate <b>resilient network design, load balancing, and recovery mechanisms</b> into operational processes and capacity planning.</li><li>Conduct <b>network anomaly detection, security forensics, and performance monitoring</b> to ensure optimal RONIN node integrity and operational readiness.</li><li>Ensure compliance with <b>DoD STIGs</b>, <b>Army cybersecurity policy</b>, and other applicable directives for secure network operations.</li><li>Develop and maintain technical documentation, topology diagrams, and configuration baselines using collaborative platforms and version-controlled repositories.</li></ul><div></div><p><b>BASIC QUALIFICATIONS:</b></p><ul><li>Bachelor’s degree with <b>12+ years of experience</b>, or Master’s degree with <b>10+ years of experience</b> (additional directly applicable experience may substitute for degree).</li><li>Active <b>DoD IAT Level II (e.g., Security+)</b> certification or equivalent prior to start.</li><li>Expert understanding of <b>network security, segmentation, and virtualization</b> technologies, including VSYS and multi-tenant environments.</li><li>Demonstrated experience with <b>LAN, WAN, BGP, TCP/UDP, IPSec, VPN, L2/L3 routing</b>, and firewall operations within hybrid or virtualized infrastructures.</li><li>Experience with one or more enterprise management platforms such as <b>Palo Alto Panorama, Cisco ISE, Tenable Security Center, VMWARE vSphere, Redhat Openshift, Cisco Prime, Cisco DNA, or Junos Space</b>.</li><li>Proven ability to apply <b>DoD STIGs</b> and system hardening standards to enterprise network environments.</li><li>Experience with two or more of the following vendor technologies: <b>Cisco, Juniper, Palo Alto, Dell, RAVPN, GlobalProtect, or AppGate</b>.</li><li>Working knowledge of <b>SFTP, SSH, SCP, MPLS, SNMP, and NTP</b>.</li><li>Ability to work collaboratively in a <b>high-tempo, mission-driven environment</b>, executing complex troubleshooting and resolution efforts.</li><li>Strong written and verbal communication skills.</li><li>Willingness to work non-standard shifts to support mission operations.</li><li>Ability to travel up to <b>10%</b>.</li></ul><div></div><p><b>PREFERRED QUALIFICATIONS:</b></p><ul><li>Experience supporting <b>Army or DISA network modernization/migration</b> programs.</li><li>Hands-on experience with <b>Palo Alto Next-Generation Firewalls (NGFW)</b> and advanced rule-base design.</li><li>Familiarity with <b>NetSecOps tools</b> such as Git, GitLab CI/CD, Ansible, Terraform, and Puppet.</li><li>Scripting experience in <b>Python</b> for automation and configuration management.</li><li>Expertise in <b>resilient and distributed enterprise network architecture design</b>.</li><li>Comprehensive understanding of <b>U.S. Army network security and compliance standards</b>.</li></ul><p></p><p></p><p>At 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.”</p><p></p><p>If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.</p><h2></h2><h2></h2><h2><u><b>Original Posting:</b></u></h2>October 30, 2025<div><div><div><div><div><div><div><p></p><p>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.</p></div></div></div></div></div></div></div><div></div><p></p><h2><b><u>Pay Range:</u></b></h2>Pay Range $112,450.00 - $203,275.00<p></p><p><span>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.</span></p>

Leidos Holdings

Senior RONIN Network Security Engineer

Leidos Holdings