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JCS Solutions LLC is seeking an experienced and motivated Senior Network Engineer to support the Defense Threat Reduction Agency (DTRA) on the Integrated Information Technology Support Services (I3TS) contract. This contract is a critical initiative to modernize and operate DTRA's enterprise IT systems. The successful candidate will play a key role in enhancing IT efficiency, security, and mission effectiveness by designing, implementing, and maintaining a resilient and secure network infrastructure. This role will be instrumental in supporting the agency's mission to counter and prevent emerging global threats.

What you will do:

• Design, deploy, and maintain robust network infrastructure to support enterprise systems and data pipelines.
• Configure and optimize network hardware including routers, switches, firewalls, load balancers, and VPN solutions to ensure secure and reliable connectivity.
• Manage and support Unified Communications, including Cisco Call Manager (CUCM), to ensure seamless voice and video collaboration.
• Lead complex network engineering projects, including system upgrades, migrations, and new deployments.
• Implement and manage network access control (NAC) using Cisco Identity Services Engine (ISE), including device profiling, posture assessment, and policy enforcement to support a Zero Trust architecture
• Monitor network performance, troubleshoot latency and bandwidth issues, and implement changes to improve stability and throughput.
• Implement and manage routing protocols such as BGP and OSPF.
• Configure, and maintain TACLANE high-assurance cryptographic encryptors, including the implementation of Agile VLAN for Layer 2 security.
• Troubleshoot and support portable, deployable "fly-away kits" for remote and tactical communications needs.
• Create and maintain comprehensive documentation, including detailed network diagrams, system engineering plans, and technical standards.
• Ensure the network design complies with all security policies, supports scalability, and aligns with operational and mission requirements, including the implementation of Zero Trust principles.
• Collaborate with government partners, engineers, and other stakeholders to translate operational and strategic requirements into scalable, production-ready solutions.
• Mentor and guide junior network engineers, providing technical oversight and sharing knowledge.

What you will bring:

• Security Clearance: Active Top Secret with SCI eligibility.
• Bachelor’s degree in computer science, Electrical/Network Engineering, Information Systems, or a related technical discipline with 8-12 years of relevant experience, OR a master’s degree with 6-10 years of relevant experience.
• Current DoD 8570/8140 baseline certification (Security+ and CCNA).
• Proven experience in engineering and sustaining enterprise network infrastructure in DoD or other federal environments.
• Hands-on experience with routing and switching protocols (BGP, OSPF), network security (NGFW, IDS/IPS), and load balancing.
• Experience with configuring routers, switches, firewalls, load balancers, and VPN solutions from vendors like Cisco, and Palo Alto.

How you will wow us:

• Advanced networking certifications such as Cisco CCNP or CCIE.
• Experience with high-assurance cryptographic devices, specifically TACLANE (KG-175).
• Experience with Cisco Unified Communications Manager (CUCM).
• Experience with network automation and Infrastructure as Code (IaC) tools like Ansible .
• Familiarity with Zero Trust network segmentation and micro-segmentation.
• Experience supporting large-scale enterprise data, analytics, or platform services in secure environments.
• Experience with Remedy or ServiceNow ticketing systems.
• Familiarity with TACLANE management (e.g. GemOne, CHIMERA, VINE)
• Experience with Cisco Nexus switching platforms and expertise in software-defined networking (SDN) solutions, particularly Cisco ACI, for data center automation and micro-segmentation.

JCS Solutions (JCS) is a premier technology firm providing innovative solutions and high-quality services in defense, national security, and civilian sectors. JCS offers enterprise-wide solutions including cloud computing, software development, cybersecurity, digital modernization, and management consulting for the federal government. At JCS, we elevate our customers’ mission through the application of technology and professional services. Our commitment to investing in our workforce drives innovation and progress for our clients, employees, and communities. JCS is both a Great Place to Work and a Washington Post’s Top Places to Work certified company.

Our employees embody our core values, and we are looking for others who do too!

• Customer Experience: Strive for excellence and delight our clients
• Innovation: Embrace creative thinking to enable continual growth and powerful solutions
• Accountability: Take ownership of and pride in our actions and service delivery
• Inspire: Be inspired to be your best self and have fun in the process
• Integrity: Do the right thing, the right way, every time!
• Stewardship: The careful and responsible management of something entrusted to our care.

Commitment to non-discrimination: All qualified applicants will receive consideration for employment without regard to any status protected by applicable federal, state, or local laws.