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Apex Systems

Network Engineer - Network Engineer III

Apex Systems, Redmond, Washington, United States, 98052

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Senior Network Engineer

We are seeking a highly skilled and experienced Senior Network Engineer to join our team. This role is ideal for a candidate with deep expertise in IP networking, routing protocols, and network automation, who thrives in a dynamic and highly available infrastructure environment. You will be responsible for designing, implementing, and maintaining complex network systems that support mission-critical operations. Key Responsibilities: Architect, deploy, and maintain enterprise-grade network infrastructure. Configure and troubleshoot IP protocols (IPv4/IPv6) and routing protocols such as BGP and OSPF. Manage and support routing and switching platforms including Cisco Catalyst, Cisco Nexus, and Juniper SRX/QFX/MX. Perform advanced network analysis and troubleshooting using tools like Netflow, SNMP, and syslog. Support and optimize network services including LAN/WAN Ethernet, MSTP, VRRP, GSLB, anycast, multicast, MPLS, VPN, IPSEC, and TACACS. Maintain core network technologies including TCP/IP, ACLs, DNS, DHCP, and IPAM. Develop and maintain automation scripts using Python, Perl, or Bash. Collaborate with cloud teams to support AWS networking using Terraform or CDK. Participate in an on-call rotation and work flexible hours as needed. Lead process improvements and identify opportunities for operational enhancements. Required Qualifications: Minimum 7+ years of industry experience in network engineering. Strong understanding of IP networking fundamentals and TCP/IP stack across layers 14. Hands-on experience with Linux/Unix environments. At least 2 years of experience with major internet routing protocols. At least 1 year of experience in network automation scripting. Experience designing and supporting highly available networks. Familiarity with packet forwarding architectures and modern network design. Proven experience with IPv6/IPv4 implementations. Preferred Qualifications: Industry certifications such as CCNP, CCIE, JNCIP, or JNCIE. Experience in hybrid cloud environments and cloud-native networking. Strong communication and documentation skills.