The Defense Sector at Leidos is seeking a motivated TS/SCI cleared Network Administrator to support the installation, configuration, and day-to-day management of enterprise network infrastructure. This role is an excellent opportunity for an early-career network professional to gain hands-on experience with routing and switching platforms, including Session Smart Router (SSR) / 128 Technology SD-WAN solutions, in a structured and security-conscious environment. The ideal candidate demonstrates a solid foundation in networking fundamentals, a willingness to learn vendor-specific technologies, and the discipline to operate within DoD network standards. The job duties will be performed daily on site at Langley Air Force Base, VA. Roles and Responsibilities: Assist in the configuration, deployment, and ongoing management of routers, switches, and Session Smart Router (SSR) appliances across enterprise and edge network environments. Support the design and implementation of routing policies, service policies, and traffic steering configurations on SSR/128 Technology platforms under senior engineer guidance. Perform LAN switching administration — including VLAN configuration, spanning tree, trunking, and port security — on Juniper EX Series and/or Cisco Catalyst platforms. Assist with the configuration and troubleshooting of routing protocols including OSPF and BGP (eBGP and iBGP) across enterprise WAN and data center environments. Monitor network health, availability, latency, and throughput using network management tools; escalate anomalies and assist in root cause analysis. Support configuration and maintenance of firewall rules, access control lists (ACLs), IPsec VPN tunnels, and other network security controls. Execute software and firmware upgrades, patch management, and lifecycle maintenance activiti
Role overview
Job description
For over 20 years, Smartsheet has empowered teams to manage work seamlessly and scale solutions smarter. Now, in our most ambitious chapter yet, we are uniting human teams with AI agents. By orchestrating the work agents do best, automating manual tasks and uncovering insights at scale, we create the space for people to focus on what truly matters: judgment, creativity, and big thinking. That is magic at work, and it’s what we show up for every day. The Solution Lifecycle team is looking for a curious, growth-minded Senior Software Engineer II to work on building the next generation of our platform while tackling meaningful distributed systems challenges alongside a talented engineering team. You will collaborate closely with product managers and fellow engineers through code reviews and architectural discussions, and you will have the opportunity to mentor other engineers. You will also
…What they are looking for
Skills & requirements
Qualification
A BS or MS in Computer Science, Engineering, or a related field (or equivalent practical industry experience) US Work
Department · Engineering - Developers

Hiring company
Smartsheet
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