Summary: Seeking an experienced Senior Network Engineer to design, implement, and maintain advanced network infrastructure with a strong focus on security, connectivity, and cloud technologies, providing tier 3 global support. Highlights: 1. Design and deploy LAN/WAN network infrastructure 2. Provide tier 3 troubleshooting and support for network issues 3. Implement security tools and procedures with cybersecurity team We are seeking an experienced **Senior Network Engineer** to join our team. In this role, you will design, implement, and maintain advanced network infrastructure with a strong focus on security, connectivity, and cloud technologies. You will provide tier 3 global support, troubleshoot complex issues, and ensure the reliability and performance of the organization's network systems. **Responsibilities** * Design, develop, and deploy LAN/WAN network infrastructure to meet organizational needs * Provide tier 3 troubleshooting and support for all LAN/WAN\-related issues and alerts * Maintain monitoring and reporting systems to ensure optimal network performance * Create and manage technical documentation for all deployed systems and configurations * Perform on\-call duties to support network operations during non\-business hours * Manage administrative tasks related to time tracking and status reporting * Configure and install network devices and services, including routers, switches, firewalls, load balancers, VPNs, and QoS configurations * Perform regular network maintenance and system upgrades, including patches, service packs, and security configurations * Monitor system resource utilization, ensure availability, and plan for capacity needs * Work within established configuration and change management policies to ensure successful network updates * Implement security tools, policies, and procedures in collaboration with the cybersecurity team * Troubleshoot routing loops, asymmetric routing issues, and STP loop problems * Conduct technical training sessions for internal teams to enhance operational knowledge * Collaborate with vendors and IT personnel to resolve complex network challenges **Requirements** * At least 3 years of experience as a Network Engineer with hands\-on expertise in network troubleshooting and design * Advanced knowledge of network technologies, including SDWAN (Silver Peak preferred), next\-generation firewalls (Cisco Firepower preferred), and wireless networks (Cisco WLC preferred) * Experience configuring and troubleshooting routing protocols, including EIGRP, OSPF, and BGP * Proficiency in LAN switching technologies such as VLAN, VTP, STP, and EtherChannel * Expertise in configuring and troubleshooting TCP/IP protocol suite and application protocols like HTTP, HTTPS, FTP, SMTP, SNMP, and SSL * Knowledge of network security protocols, including IPSec/SSL VPN, AAA architecture, TACACS\+, RADIUS, and 802\.1x * Experience with Cisco Catalyst and Nexus switches, including Nexus 9K/7K series and ACI environments * Familiarity with firewall cloud services like Zscaler and configuring Cisco ASA and IPS systems * Ability to analyze network tools and outputs, such as identifying high CPU utilization on core devices at data centers * Fluent English communication skills, both written and spoken, at a B2 level or higher **Nice to have** * CCNP certification to demonstrate advanced networking expertise * Experience with AWS, GCP, or Azure cloud services * Familiarity with Citrix NetScaler load balancers, Cisco FTD firewalls, Aruba SD\-WAN, and Azure cloud solutions