li>Technical Proficiency: Be able to read, interpret, and provide network designs for various types of presentation both technical and high-level informative; thorough knowledge of STE/STN and RMF to ensure system compliance; troubleshoot network performance issues, analyze net traffic and provide capacity planning solutions; analyze and understand complex firewall security zones and policies with the ability to transform policies between multiple vendor firewall devices while meeting mission requirements; utilize application security tools (i.e. Nessus, NMAP) to identify vulnerabilities and weaknesses. April 13, 2026For 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.