Sr. Engineer – Network

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 http://www.cbts.com. Role Summary Sr. Engineer – Network is a senior technical engineer responsible for 24×7 operational support, troubleshooting, and optimization of complex enterprise network environments within a Managed Services (MS) organization. This role serves as a Tier 3 escalation engineer, supporting customer networks built on Palo Alto, Fortinet, Cisco, Meraki, Aruba, and F5 Load Balancing platforms across hybrid, cloud, and global infrastructures. The engineer maintains strong multi‑vendor networking fundamentals, drives incident resolution, and supports adjacent technologies as required. The Network Engineer III directly influences customer satisfaction, service quality, and incident outcomes, and collaborates closely with Managed Services Network, Managed Services Security, Engineering, Presales Architecture, Product, and Service Management teams. Key Responsibilities 24×7 Operations & Tier‑3 Escalation Participate in a 24×7 on‑call rotation as a Tier‑3 escalation engineer.Troubleshoot and resolve complex network issues across:Palo Alto and Fortinet firewallsCisco IOS/XE, Nexus, and Meraki environmentsAruba switching and wireless infrastructuresF5 LTM/GTM load balancing platforms Lead high‑severity incident response, including:Technical troubleshootingCustomer communicationsRoot cause analysis (RCA) and corrective actions Act as a senior technical escalation point during major outages and service-impacting events. Enterprise Network Engineering & Lifecycle Management Provide senior‑level support for enterprise network architectures, including:Campus, WAN, and data center networkingFirewall and security enforcementLoad balancing and application delivery Own the full managed service lifecycle, including:Customer onboarding and service readinessChange management and risk assessmentHardware and software upgradesPlatform migrations and decommissioning Validate and enforce:Network security policies and segmentationRouting and traffic flow designHigh availability, redundancy, and resiliency standards Routing, WAN & Cloud Connectivity Support advanced routing implementations, including:BGP (required) – policy control, filtering, and failoverOSPF Troubleshoot and support hybrid and cloud connectivity, including:AWS (VPC, Transit Gateway)Azure (vNET, vWAN, ExpressRoute)Google Cloud Platform (VPC) Ensure optimized:Traffic flow and path selectionApplication performance and availabilitySLA adherence and fault isolation Security & Firewall Operations Support enterprise firewall and security platforms, including:Palo Alto Networks NGFWFortinet FortiGate Troubleshoot and maintain:Security policies and rulebasesNAT, VPN (IPsec/SSL), and remote accessHigh availability firewall clusters Partner with security teams to align network enforcement with enterprise security posture. Load Balancing & Application Delivery Support and troubleshoot F5 Load Balancers, including:LTM and GTM configurationsApplication availability and traffic distributionSSL offloading and persistence Assist in identifying and resolving application performance and availability issues related to network design. Automation, Tooling & Operational Maturity Contribute to automation and standardization efforts using:APIs, Python, Ansible, or Terraform (preferred) Improve observability using:Network monitoring platforms (e.g., SNMP, API‑based telemetry, LogicMonitor) Develop and maintain:SOPs and operational runbooksTier‑3 troubleshooting and escalation guidesService readiness documentation for new platforms Mentor and provide technical guidance to Tier‑1 and Tier‑2 engineers.Collaborate with Architecture, Product, and Service Management teams to continuously improve managed network offerings. Required Technical Skills Core Networking Technologies Strong hands‑on experience with:Palo Alto Networks firewallsFortinet FortiGateCisco routing and switchingCisco MerakiAruba switching and wirelessF5 Load Balancers Deep understanding of:TCP/IP, routing, and switching fundamentalsNAT, firewalling, and VPN technologiesHigh availability and redundancy designQoS and application‑aware networking Routing & WAN Fundamentals BGP (required) – design, troubleshooting, and policy enforcementOSPFExperience supporting enterprise WAN and hybrid network designs Multi‑Vendor Enterprise Networking Ability to translate architectures and concepts across vendorsStrong troubleshooting skills in mixed‑vendor customer environmentsExperience supporting both hardware‑based and cloud‑connected network platforms Qualifications & Experience 7+ years of hands‑on network engineering experience.Strong experience supporting:Routers, switches, firewalls, load balancers, and WAN infrastructure Experience working in a Managed Services or enterprise operations environment.Proficiency with:Network monitoring and performance analysis toolsVisio or similar tools for detailed network diagrams Familiarity with:Wireless technologies and site deploymentsSecurity intelligence and vulnerability awareness Prior experience in network design or presales engineering is a plus. Certifications Cisco Certified Network Associate (CCNA) – RequiredCisco Certified Network Professional (CCNP) – Highly RecommendedVendor certifications (Palo Alto, Fortinet, F5, Aruba) are a strong plus. Education Bachelor’s degree in a related field, or equivalent practical experience. Supervisory Responsibilities None. #LI-PK1 #LI-REMOTE #LI-CBTS Due to U.S. Government requirements applicable to foreign-owned telecommunications providers, non-US citizens may be required to submit to an extensive government agency background check which will necessitate disclosure of sensitive Personally Identifiable Information. Locations: Remote (United States)