Sr. Engineer - Network Administration

1. Role Purpose: Provides senior-level network administration, operational support, and technical troubleshooting to maintain secure, resilient, and high-performing enterprise connectivity across LAN, WAN, wireless, firewall, and remote-access environments. The role ensures network availability, supports planned changes and upgrades, drives incident resolution and root-cause analysis, and contributes to documentation, compliance, and continuous improvement of network operations. 2. Key Responsibilities: Administer, monitor, and support enterprise network infrastructure to ensure availability, performance, and secure connectivity across business locations and supported environments. Configure, maintain, and troubleshoot routers, switches, firewalls, VPNs, wireless controllers, load balancers, and related network services in line with approved standards. Implement network changes, upgrades, patching, backups, and configuration updates through approved change-management processes while minimizing service risk. Investigate and resolve network incidents and service degradations, perform root-cause analysis, document corrective actions, and escalate complex issues when required. Maintain accurate network documentation, including topology diagrams, device inventories, configuration records, operational procedures, and incident/change logs. Monitor performance indicators such as bandwidth utilization, latency, packet loss, device health, capacity, and availability; recommend improvements where trends indicate risk. Coordinate with NOC, infrastructure, security, service delivery, vendors, and managed service providers to support incident resolution, planned maintenance, and service improvements. Ensure adherence to SLAs, operational controls, security policies, compliance requirements, and audit readiness for supported network environments. Support network resilience activities, including failover validation, backup and recovery checks, vulnerability remediation, and implementation of security hardening actions. Contribute to knowledge base articles, SOP updates, audit responses, service reviews, automation opportunities, and process improvement initiatives; provide guidance to junior team members where applicable. CBTS serves enterprise and midmarket clients in all industries across the United States and Canada. CBTS combines deep technical expertise with a full suite of flexible technology solutions--including Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, CBTS delivers comprehensive technology solutions for its clients' transformative business initiatives. For more information, please visit . OnX is a leading technology solution provider that serves businesses, healthcare organizations, and government agencies across Canada. OnX combines deep technical expertise with a full suite of flexible technology solutions—including Generative AI, Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, OnX delivers comprehensive technology solutions for its clients’ transformative business initiatives. For more information, please visit .