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.

Harmonia is seeking an experienced Senior Network Engineer with expertise in Palo Alto Networks or Cisco technologies to support a mission‑critical environment at 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.

Veterans are encouraged to apply.

• 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.

• Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent work experience).
• Active TS/SCI security clearance with SCI elibigibility
• CCNA or CCNP is required.
• 8 years of enterprise IT systems and network administration experience.
• Strong expertise with Cisco networking technologies (switches, routers, firewalls).
• 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.

• Palo Alto Networks certification (PCNSE) is highly desired.
• Hands‑on experience with Panorama Firewall Management and Palo Alto Networks products.
• 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.

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Here at Harmonia we are pleased to have been repeatedly recognized for our outstanding work culture, the innovative work we do, and the employees on our team who make a difference each day. Some of these recognitions include:

• Recognized as a Top 20 "Best Place to Work in Virginia"
• Recipient of Department of Labor's Hire Vets Gold Medallion
• Great Place to Work Certification for five years running
• A Virginia Chamber of Commerce Fantastic 50 company
• A Northern Virginia Technology Council Tech 100 company
• Inc. 5000 list of fastest growing companies for eleven years
• Two‑time SBA SBIR Tibbett's Award winner
• Virginia Values Veterans (V3) Certification

We recognize that every bit of our success is the result of our teams of hard‑working, motivated, and innovative professionals who are proud to call themselves part of the Harmonia family! In addition to competitive compensation, a family‑focused culture, and a dynamic, productive work environment, we offer all full‑time employees a variety of benefits including, but not limited to

• Traditional and HSA‑eligible medical insurance plans
• 100% employer‑paid dental and vision insurance options
• 100% employer‑sponsored STD, LTD, and life insurance
• 5% 401(k) company matching
• Flexible‑schedules and teleworking options
• Paid holidays and PTO Accrual Plans
• Professional development and career growth opportunities
• Team and company‑wide events, recognition, and appreciation—and so much more!