Job Title: Principal Network Engineer / Architect Company Name: iOPEX Technologies Job Url: https://app.loxo.co/job/MzE4MjMtajUyYmxkOXp5dHVtamtveg==?source_type=linkedin&jr_id=69afb518749500645094aaa9 Job Description: verview We are seeking a Principal Network Engineer / Architect to join a high-performance Managed Services engineering team supporting complex enterprise network environments. This role is designed for engineers operating at CCIE-level technical depth who specialize in advanced troubleshooting, escalation engineering, and architecture guidance across large-scale Cisco and Arista environments. The Principal Engineer will serve as the senior technical authority across multiple enterprise clients simultaneously, supporting production networks that span large-scale campus, data center, and WAN infrastructures. Success in this role requires the ability to context switch across multiple enterprise environments, diagnose complex networking issues quickly, and provide expert-level technical leadership to both internal teams and client engineering organizations. This is a hands-on engineering role focused heavily on deep technical troubleshooting and escalation support, not a NOC or ticket-processing position. Key Responsibilities: Serve as the Principal escalation engineer across multiple enterprise client environments Perform advanced troubleshooting across complex Cisco and Arista production networks Lead root cause analysis for high-severity network incidents impacting enterprise environments Operate as the technical authority supporting several enterprise infrastructures simultaneously Provide architectural guidance across campus, data center, and WAN network designs Troubleshoot advanced routing, switching, and overlay networking architectures Serve as an internal escalation resource for complex TAC-level networking issues Partner directly with enterprise client engineering teams and infrastructure leadership Develop documentation, standards, and best practices across managed environments Technical Requirements - Cisco & Arista Focus Expert-level networking depth across: BGP, OSPF, advanced routing policy and traffic engineering EVPN / VXLAN overlay architectures Large-scale Layer 2 and Layer 3 troubleshooting Enterprise data center networking and spine-leaf fabrics High-availability network architecture and multi-site design Cisco Expertise Deep hands-on experience with Cisco enterprise and data center networking including: Cisco Nexus 9000 platforms Cisco Catalyst 9000 campus environments Cisco ACI fabric architectures SD-WAN (Viptela or similar) Complex enterprise routing and switching environments Arista Expertise Experience designing and troubleshooting modern Arista environments including: Arista EOS switching platforms EVPN / VXLAN spine-leaf data center fabrics Large-scale Arista data center deployments Troubleshooting distributed leaf-spine architectures Experience with Arista CloudVision is a plus Ideal Candidate Background 10+ years of enterprise networking experience Engineers operating at CCIE-level depth (certification not required) Strong experience in Managed Services, MSP, VAR, or consulting environments Proven ability to support multiple enterprise clients simultaneously Track record of solving complex production networking issues Experience supporting large-scale enterprise or Fortune 500 infrastructure environments Ability to operate independently as a senior technical authority Role Highlights: -Fully remote within the United States -Principal-level engineering role with high technical autonomy -Heavy focus on advanced troubleshooting and escalation engineering -Work across multiple enterprise environments simultaneously -Exposure to complex Cisco and Arista production networks -Competitive compensation aligned with top-tier engineering talent