Sr. Tier II Network Technician

The Digital Modernization Sector at Leidos is seeking a Tier II Network Technician to support various WAN and LAN networks.  Will provide incident resolution, routing changes, firewall changes; act as subject matter expert in WAN and LAN technologies; support intra- and inter- net and other data communications systems or segments of networked system. The job duties of the Tier II Network Technician are as follows: The Tier 2 Nework Technician will support the installation and maintenance of the client LAN/WAN devices. Respond to and resolve incident tickets Draft and implement standard network change requests Provide support to Tier III network engineers for incident management and projects (site surveys, Technical Exchange Meetings (TEMs), and coordinate and install new equipment) Perform configuration management functions such as update topology drawings, ensure asset management records are accurate, and conduct inventory Coordinate network operations, maintenance, repairs, or upgrades. Configure and troubleshoot layer 2 switching (Virtual Local Area Networks (VLANs), Port Security, and Thin Configurations) Perform COMSEC custodian duties, ensuring the proper handling, storage, and safeguarding of cryptographic materials in compliance with U.S. Government Polices. Maintain accountability and inventory control of COMSEC equipment, keying material, and related documentation. Support the installation, configuration, and troubleshooting of encryption devices, including TACLANEs and other secure communication equipment. Support network security operations, ensuring COMSEC integration aligns with overall cybersecurity requirements. Requirements TS SCI with Poly Candidate must have 16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years, master’s and 10 years, bachelor’s and 12 years, associates and 14 years or HS diploma and 16 years.  Compliance with Department of Defense (DoD) 8570 Information Assurance Technical (IAT) Level 2. Working knowledge of basic routing fundamentals Working knowledge of layer 2 switching concepts Knowledge of CISCO/Juniper Return Material Authorization (RMA) processes Layer 1 and Layer 2 network experience (CAT5, Single Mode (SM)/Multimode (MM) Fiber, Serial cables, Small Form-factor Pluggable (SFP) Knowledge of Transmission Control Protocol/Internet Protocol (TCP/IP) and Open Systems Interconnection (OSI) models Knowledge of Cisco Internetworking Operating System (IOS), Juniper JUNOS, and the Brocade and Foundry Operating System (OS) Familiarity (doesn’t need to be a SME) with Layer 3 protocols such as Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), Virtual Router Redundancy Protocol (VRRP), Hot Standby Router Protocol (HSRP), Multiprotocol label switching (MPLS), Language Server Protocol (LSP), and Generic Routing Encapsulation (GRE)  Familiarity with Microsoft Visio, ServiceNow, and Atlassian Confluence Working knowledge of Service Now or similar IT Service Management (ITSM) products Up to 25% travel  If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: June 24, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $92,300.00 - $166,850.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.