Senior Network Engineer T4

Koniag IT Systems, LLC a Koniag Government Services company, is seeking a Senior Network Engineer T4 to support KITS and our government customer Washington, DC. This position requires the candidate to be able to obtain a Public Trust.

Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement.

The Senior Network Engineer T4 provides expert-level network engineering support in CLIENT's enterprise IT environment. Working under the direction of the Network Engineer T4 (Lead), this individual independently handles complex network engineering tasks, serves as a senior escalation resource within the network team, and contributes to the design, integration, and operations of CLIENT's enterprise network infrastructure. This role requires deep technical expertise, the ability to work autonomously on complex problems, and the capacity to serve as a qualified backup to the Network Engineer T4 (Lead) when needed.

• Provide Tier 4 network engineering support across CLIENT's enterprise environment, including LAN/WAN, routing, switching, wireless, SD-WAN, and network security fabric
• Independently diagnose and resolve complex, cross-domain network incidents and problems without requiring escalation to government personnel
• Execute enterprise network changes and integrations in accordance with ITIL 4 change management practices
• Support the Network Engineer T4 (Lead) in planning and executing complex network projects and integrations
• Contribute to 24x7 NOC operations through on-call availability and documented escalation procedures

• Ensure all network work aligns with FISMA, NIST SP 800-53, and Zero Trust Architecture principles (NIST SP 800-207, OMB M-22-09)
• Apply least-privilege and separation-of-duties principles in all network engineering activities
• Support FedRAMP compliance for cloud-connected network components
• Adhere to CLIENT cybersecurity policies and procedures at all times

• Support integration and operations of on-premises and cloud network infrastructure across AWS commercial, AWS Gov Cloud, Microsoft Azure Government, and Microsoft 365 environments
• Assist in SD-WAN operations and optimization across CLIENT's geographically distributed enterprise
• Collaborate with infrastructure, platform, and cloud teams to ensure reliable connectivity and performance

• Maintain and update network documentation, diagrams, and configurations in the ITSM platform and knowledge base
• Develop and maintain standard operating procedures for network tasks and escalation paths
• Support cross-training efforts to ensure coverage continuity and team depth
• Contribute to after-action reviews and Sprint Retrospectives with actionable improvement recommendations

• Minimum 6–8 years of hands-on enterprise network engineering experience
• Demonstrated experience in a Federal or private-sector enterprise environment of comparable scale, complexity, and security posture
• Proven ability to independently resolve complex, cross-domain network problems at the enterprise level
• Experience supporting hybrid on-premises and cloud network environments
• Experience executing enterprise network changes in accordance with formal change management processes
• Ability to obtain a Public Trust

• Advanced proficiency in:
• Enterprise LAN/WAN architecture and operations
• Routing protocols (BGP, OSPF, EIGRP)
• Switching technologies (VLANs, STP, port aggregation)
• Wireless enterprise networking
• SD-WAN design and operations
• Network security…