Senior Network Engineer

Leidos

. Serve as a senior technical and escalation resource for complex network engineering and operational issues .

Posted 10/16/2026full-timeRemote • United StatesSenior💰 $92,300 - $166,850 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in designing, implementing, and troubleshooting complex enterprise network infrastructures, with a strong focus on security, performance, and reliability. Proficient in leading network modernization efforts and collaborating with cross-functional teams to enhance network capabilities.

Highest-signal resume keywords

Network EngineeringCisco Firepower EngineeringAWS Hybrid Cloud ConnectivityRouting Protocols ExpertiseNetwork Troubleshooting

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

BGPOSPFVLANsVRFsRouting RedundancyNetwork FailoverEnterprise FirewallsVPN ConnectivityNetwork AutomationTechnical Documentation

Soft Skills

Strong Communication SkillsCollaboration with CustomersMentorship and Guidance

Tools & Technologies

Cisco ISEJuniper EX/QFXCisco ISRAWS VPCVMware/vSphereCisco AnyConnectCisco CUCM/UC

Certifications & Qualifications

Public Trust ClearanceCCNACCNPJNCIP-ENT8140 Certification (IAT Level II)

Industry Keywords

Network InfrastructureIncident ManagementSecurity RemediationNetwork Performance EvaluationAccess Control Policies

Tech Stack

Tools & technologies

AWSCloudCyber SecurityFirewallsiOSServiceNowSwitchingVMware

About the role

Key responsibilities & impact

Serve as a senior technical and escalation resource for complex network engineering and operational issues
Lead planning, design, implementation, and optimization of complex network infrastructure across distributed, multi-vendor environments
Analyze technical challenges and implement corrective actions improving network reliability, performance, and security
Design, configure, maintain, and troubleshoot enterprise routing and switching infrastructure
Engineer and support Cisco Firepower, FMC, ASA, firewall policies, access controls, and security hardening
Design, implement, and sustain site-to-site and remote-access VPN solutions
Engineer hybrid cloud connectivity between on-premises infrastructure and AWS services
Support enterprise wireless networking and network access control technologies including Cisco ISE
Lead infrastructure upgrades, modernization, lifecycle replacements, and security remediation
Evaluate network performance, availability, capacity, and emerging requirements; recommend improvements
Lead complex incident investigations and root cause analysis
Collaborate with customers, program leadership, cybersecurity teams, vendors, and service providers
Develop network architecture documentation, configuration standards, implementation plans, and operational procedures
Support incident, problem, change, and service request management processes
Provide mentorship, peer review, and engineering guidance to junior and mid-level engineers
Identify opportunities for network automation, standardization, and process improvement

Requirements

What you’ll need

Must have or be able to obtain a Public Trust clearance
Must be a US Citizen
Bachelor's degree in Information Technology, Computer Science, Engineering, or a related technical field with 8+ years of relevant network engineering experience; additional education and experience equivalencies may be considered
Advanced hands-on experience designing, implementing, administering, and troubleshooting complex enterprise network infrastructure in production environments
Expert-level knowledge of BGP, OSPF, VLANs, VRFs, routing redundancy, and network failover
Experience with complex network problem-solving across multiple systems, technologies, or engineering disciplines
Experience with enterprise firewalls, access control policies, and VPN connectivity
Experience with Cisco and/or Juniper enterprise networking platforms
Experience with hybrid cloud connectivity between on-premises infrastructure and AWS
Experience leading complex network troubleshooting, root cause analysis, and corrective actions
Experience planning and executing network changes, upgrades, and security remediation in production environments
Experience developing technical recommendations and collaborating with customers, engineering teams, vendors, and service providers
Experience producing network diagrams, technical documentation, configuration standards, and implementation procedures
Strong communication skills and direct collaboration with customers, vendors, and ISPs
Hands-on experience with Juniper EX/QFX and Junos OS; Cisco ISR and IOS; ASA; Firepower and FMC
Experience with routing/switching protocols and core infrastructure services
Experience managing AWS VPC, Direct Connect, Transit Gateway, and load balancers
Experience with Cisco AnyConnect/Secure Client remote-access VPN
Experience with VMware/vSphere as related to network design and connectivity
Experience with wireless infrastructure and NAC solutions such as Cisco ISE
Experience with Cisco CUCM/UC voice solutions
Able to obtain a baseline 8140 certification (IAT Level II: CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP) within 90 days
Preferred: Cisco CCNA
Preferred: Cisco CCNP or Juniper JNCIP-ENT
Preferred: Cisco Meraki wireless, Cisco ISE, Dell switches and OS10, ServiceNow, and Security+ CE experience/certification