Senior Network Engineer

Job Summary (in List Format) - Senior Network Engineer

• Role: Senior Network Engineer
• Department: Network Services
• Location: Onsite (Preferred: Purchase, NY; Morristown, NJ; Garden City, NY; New York City, NY; Dallas, TX; Houston, TX; Lubbock, TX) - Locals only
• Client: Sompo International
• Visa: USC, GC (strong consultants considered)

• Design, implement, and support LAN/WAN network infrastructure across global environments.
• Provide Tier 3 operational support and advanced troubleshooting for network issues.
• Install, configure, and maintain network devices and services (routers, switches, firewalls, load balancers, VPNs, QoS).
• Perform network maintenance, upgrades, and security configurations.
• Monitor and analyze network performance, availability, and capacity.
• Maintain comprehensive network documentation.
• Ensure compliance with change and configuration management policies.
• Implement and enforce network security tools, policies, and procedures.
• Collaborate with vendors and IT teams to resolve escalated issues.
• Participate in 24x7 on-call rotation for after-hours support.
• Conduct technical training for internal IT resources.
• Handle administrative tasks such as time entry, reporting, and incident/change management participation.

• 5-8 years of hands-on enterprise network engineering/support experience.
• CCNP certification (required).
• Expertise in routing/switching protocols (EIGRP, OSPF, BGP, VLAN, VTP, STP, EtherChannel).
• Strong security experience (Cisco ASA, Firepower, IPS, Cisco ISE, VPN, AAA, TACACS+, RADIUS, 802.1x).
• Experience with wireless (Cisco WLC preferred) and load balancing (Citrix NetScaler or similar).
• Knowledge of cloud/data center technologies (AWS, Azure, GCP, Cisco Nexus, ACI preferred).
• Familiarity with SD-WAN (Silver Peak preferred) and cloud firewall services (Zscaler preferred).
• Proficiency with various network protocols (TCP/IP, FTP, SMTP, SNMP, SSL, QoS).
• Experience with Cisco Catalyst and Nexus devices, NX-OS, IOS.
• Supporting enterprise applications (SAP, Citrix, portals).
• Strong analytical and troubleshooting skills.

• Excellent communication and presentation skills.
• Strong collaboration and documentation abilities.
• Self-motivated, proactive, and quick to resolve issues.
• Adaptable and eager to learn new technologies.
• Ability to manage multiple tasks under tight deadlines.

• Bachelor's degree in Computer Science, IT, or related field.
• CCNP certification (required).
• Additional certifications (CCIE, AWS/Azure) are a plus. Argyll Infotech, Inc.