Senior Network Operations Engineer – Tier III

Leidos; South Dakota; On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Sr. Tier III O&M engineer to support WAN/LAN networks, incident resolution, routing/firewall changes, and act as SME in WAN/LAN technologies. The role involves managing projects across OSPF/BGP/VRF/MPLS, troubleshooting, and performance optimization.

Expect extensive collaboration with configuration and implementation teams, after-hours support, and adherence to DoD IAT Level 2 and 8570 standards. TS/SCI with Poly is required.

Qualifications

• TS SCI with a Poly.
• 16 years of experience via work history and education.
• Must comply with DoD 8570 Information Assurance Technical (IAT) Level 2.
• Experience configuring and troubleshooting boundary protection technologies (Palo Alto, Cisco ASA, Forcepoint).
• Experience with Juniper and Cisco routers and switches.
• Experience with OSPF, BGP, VPNs, VRFs, MPLS.
• Knowledge of boundary protection best practices.
• Understanding of routing, switching, IP, NAT and security technologies.
• Ability to modify rulesets for new customer requirements.
• Ability to read and develop schematics and documentation.
• Working knowledge of Service Now or ITSM products.
• Superior verbal and written communication skills.
• MS Office (Word, Excel, PowerPoint, Visio).

Responsibilities

• Support operations and maintenance; administer LAN/WAN technologies (OSPF, BGP, VRFs, VLANs, VRRP, MPLS).
• Monitor performance of systems and networks.
• Configure and test hardware, networking software and OS software.
• Assess user requests for upgrades; advise on technical approaches.
• Perform long-term O&M and tier 3 troubleshooting.
• Prepare troubleshooting procedures for network restoration.
• Provide fault and performance management; respond to issues.
• Coordinate with configuration management and implementation teams.
• Analyze network characteristics and recommend changes to components.
• Optimize network topologies and site configurations.
• Coordinate requirements with users; document current configurations.
• Maintain systems, software, data bases, tools; ensure open systems compliance.

Skills

WAN/LAN engineering

Network troubleshooting

Routing protocols

Network security concepts

Documentation & reporting

Communication

Tools

Palo Alto

Cisco ASA

Forcepoint

Juniper routers

Cisco switches

VPNs

Job description

Leidos is seeking a Sr. Tier III O&M engineer to support WAN/LAN networks, incident resolution, routing/firewall changes, and act as SME in WAN/LAN technologies. The role involves managing projects across OSPF/BGP/VRF/MPLS, troubleshooting, and performance optimization.

Expect extensive collaboration with configuration and implementation teams, after-hours support, and adherence to DoD IAT Level 2 and 8570 standards. TS/SCI with Poly is required.