4256 Senior Network Security Engineer with Security Clearance

OVERVIEW: We are seeking a highly skilled and experienced Sr. Network Security Engineer to support a federal law enforcement customer in Washington, D.C. The ideal candidate will provide hands-on engineering, administration, and security for the customer's network infrastructure. GENERAL DUTIES: * Engineer, secure, and administer enterprise network infrastructures, including routers, switches, firewalls, VPNs, and IDS/IPS solutions. * Architect and deploy network solutions using a variety of technologies (e.g., Cisco, Palo Alto, Linksy, Dell). * Design, develop and document secure network architectures; integrate security throughout the system and network lifecycle, aligning with compliance requirements and organizational mission needs. * Perform network administration duties: configuration updates, firmware management, access reviews, routing/switching optimization, and log/audit management. * Conduct vulnerability scanning, remediation, patching, and hardening of network devices. * Troubleshoot complex network and security issues; provide incident response and recovery support. * Ensure technical compliance with applicable security frameworks, standards, and regulations (e.g., DISA SITGs, NIST 800-53, RMF). * Collaborate with ISSOs, Assessors, System Owners, and other stakeholders to implement security controls. * Support security assessments, audits, and accreditation/authorization (ATO) activities. * Document security configurations, engineering solutions, and compliance evidence. * Troubleshoot and resolve security-related technical issues in a timely manner. * Promoting information security awareness across the program, ensuring security controls and processes are implemented. * Maintain awareness of new technologies and trends and bring solutions to the client. * Able to work independently with minimal guidance. * Other related duties assigned by the program manager and government leadership. REQUIRED QUALIFICATIONS: * 8+ years of experience in network engineering, administration, and security. * 8+ years of experience in control implementation and secure system engineering or design. * Excellent communication skills. * Technical Expertise: * Strong hands-on experience with Cisco routing and switching. * Expertise in configuring and managing Palo Alto firewalls. * Experience with other networking technologies such as Linksys, Dell etc. * Strong scripting skills for automation (e.g., Python, PowerShell). * Knowledge of network protocols, packet analysis, and advanced persistent threats (APTs). * Able to deliver and present security compliance to a wide range of audiences (i.e., system owners, division leadership). * Strong desire to learn, grow and is highly motivated. * Certifications: Professional network and security certifications (e.g., CCNP Security, PCNSA, PCNSE, CISSP) are highly preferred. DESIRED QUALIFICATIONS: * Experience configuring and operating enterprise storage area networks (SAN). * Understanding of cloud systems and security tools. * Proficiency with security tools such as Splunk, Tenable, CrowdStrike, Panorama. * Education: Bachelor's degree in Engineering, Computer Science, or Information Systems. CLEARANCE: * US Citizenship required