Senior Network Engineer

Senior Network Engineer Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction. Title: Senior Network Engineer Location: Washington, DC (Fully Onsite) Terms: Full-time Clearance: Active TS/SCI Travel: 0-20% Position Description Harmonia is seeking an experienced Senior Network Engineer with expertise in Palo Alto Networks and Cisco technologies to support the Department of State in Washington, DC. The ideal candidate will bring deep technical knowledge in firewall management, routing protocols, and enterprise networking while providing leadership in technology modernization, network security, and systems integration. This position requires an active TS/SCI clearance and U.S. citizenship. Responsibilities Design, deploy, configure, and maintain enterprise network systems, including Palo Alto Networks and Cisco firewalls, routers, and switches. Utilize the Panorama Firewall Management platform for centralized configuration, monitoring, and troubleshooting. Provide Tier-III firewall and network support, including advanced troubleshooting of complex security and connectivity issues. Conduct technical analysis in network planning, engineering, design, and performance optimization. Integrate and secure enterprise applications across interconnected systems. Monitor, document, and maintain network performance, configurations, SOPs, and technical documentation. Ensure compliance with Department of State security policies, DHS standards, and industry best practices. Install, configure, and maintain LAN/WAN infrastructure, servers, SANs, and related network devices. Lead efforts in requirements gathering, test planning, and certification/accreditation activities. Provide escalation support, training, and mentorship to junior network engineers. Conduct research and development for emerging technologies to enhance the network security posture. Requirements Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent work experience). Active TS/SCI security clearance. CCNA or CCNP is required. Minimum 810 years of enterprise IT systems and network administration experience. Strong expertise with Cisco networking technologies (switches, routers, firewalls). Hands-on experience with Panorama Firewall Management and Palo Alto Networks products. Proficiency in routing protocols (OSPF, static routes, VLANs, ACLs, QoS, multicast). Experience with Windows OS, Active Directory, Linux, VMware virtualization, and SAN/RAID storage solutions. Proven experience developing and implementing network security solutions. Excellent troubleshooting, communication, and leadership skills. Desired Palo Alto Networks certification (PCNSE) is highly desired. Prior experience supporting the Department of State or other federal agencies. Strong knowledge of federal compliance standards, C&A activities, and security frameworks. Demonstrated ability to lead modernization projects and mentor junior engineers. Harmonia is an Equal Opportunity Employer providing equal employment opportunity to all employees and applicants for employment without regard to race, color, religion, national origin, age, gender, gender identity, sexual orientation, disability, or genetics. Harmonia does and will take affirmative action to employ and advance in employment individuals with disabilities and protected veterans. If you are in need of an accommodation, please contact HR@harmonia.com.