Senior Network Administrator

Overview

Senior Network Administrator
Gaithersburg, MD
Active TS (SCI eligibility) clearance and eligibility to obtain a CI poly

At Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed because of the expertise, collaboration, and agility of our teams. Our Mission Services division combines enterprise IT, cloud solutions, Dev Sec Ops , systems engineering, software development, and operational support. Bcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions.

Do you want to join a team that is building tailored technical solutions to modernize our government’s mission and our client’s business? Do you have a desire to change how people work? Are you interested in helping to protect our nation’s cyber interests? Join our growing team as a Senior Network Administrator, supporting the NGA customer mission.

What you get to do every day:

• Design, configure, administer, and maintain complex enterprise LAN, WAN, WLAN, VPN, and data center network environments.
• Install, configure, and support Cisco routers, switches, firewalls, load balancers, and other network infrastructure components.
• Collaborate with Agile Scrum teams to deliver infrastructure enhancements supporting continuous integration and rapid capability delivery.
• Participate in sprint planning, backlog refinement, daily stand-ups, reviews, and retrospectives as the networking subject matter expert.
• Monitor network performance, capacity, and availability while proactively identifying opportunities for optimization.
• Troubleshoot complex network issues, perform root cause analysis, and implement long-term corrective actions.
• Implement and maintain secure network architectures in accordance with Intelligence Community security requirements and best practices.
• Support cloud connectivity, hybrid networking, and infrastructure modernization initiatives.
• Develop and maintain network documentation, topology diagrams, standard operating procedures, and configuration baselines.
• Coordinate hardware refreshes, software upgrades, maintenance windows, and patch management activities.
• Partner with cybersecurity teams to address vulnerabilities, implement security controls, and support audits and accreditation activities.

Clearance Required:

Active TS clearance (with SCI Eligibility) and eligibility to obtain CI Poly

Certification

Required:

CompTIA Security+, and Cisco Certified Network Associate (CCNA) or Network Professional (CCNP), or equivalent certification.

Education/

Experience:

• Requires Bachelor s degree in Computer Science, Engineering, Information Technology or related field
• 8-12 years of prior relevant experience or Master’s with 6-10 years of prior relevant experience
• 8+ years of network administration experience

Required Skills:

• Experience supporting large-scale, mission-critical network environments.
• Strong expertise with Cisco routing and switching technologies.
• Thorough understanding of:
• TCP/IP
• OSPF, BGP, EIGRP
• VLANs
• DNS/DHCP
• VPN technologies
• NAT
• QoS
• Multicast
• Experience administering enterprise firewalls such as Cisco ASA, Palo Alto, or Fortinet.
• Experience with network monitoring and performance management tools.
• Strong troubleshooting, analytical, and problem-solving skills.
• Excellent communication skills and the ability to collaborate across technical disciplines.
• Experience working in Agile or Scrum environments.

• Cisco CCNP, CCIE, or equivalent certification
• CompTIA Security+ CE (or DoD 8570/8140 compliant certification)
• Experience supporting Intelligence Community or Department of Defense customers
• Experience with AWS, Azure, or hybrid cloud networking
• Knowledge of Software Defined Networking (SDN)
• Experience with network automation using Python, Ansible, or Power Shell
• Familiarity with Zero Trust Architecture and micro-segmentation
• Experience with Dev Sec Ops  and Infrastructure as Code (IaC)
• Experience with VMware NSX or Cisco ACI
• ITIL…