Senior Network Engineer

Candidate must be comfortable working 1 OR 2 days onsite at San Antonio, TX Office Location

Job Title
- Level 3 Network Engineer/Technical Network Lead

Location
- San Antonio, Austin, Houston Texas

We are seeking a highly skilled Level 3 Network Engineer/Technical Network Lead with strong hands‑on experience in Viptela SD‑WAN, Cisco Wireless (Catalyst 9800), and Enterprise LAN/WAN environments. The role requires deep expertise in routing, switching, and wireless technologies, with the ability to handle complex incidents, drive root cause analysis, and support large‑scale enterprise network operations. The candidate should also demonstrate strong ownership, proactive troubleshooting, and stakeholder communication skills.

• Technical Operations & Support
  • Act as L3 escalation point for critical network incidents (P1/P2 issues).
  • Troubleshoot complex issues across WAN, LAN, SD‑WAN, and Wireless networks.
  • Ensure quick restoration of services (RTS) within SLA targets.
  • Provide advanced troubleshooting for:
    • Viptela SD‑WAN fabric (Control/Data plane issues)
    • Cisco LAN switching (VLANs, STP, Ether Channel)
    • Cisco Wireless (Catalyst 9800 WLC, AP onboarding, policy tags)
    • WAN circuits and routing instability
• SD‑WAN & WAN Management
  • Deploy, configure, and troubleshoot Cisco Viptela SD‑WAN (vManage, vEdge/cEdge).
  • Handle Overlay/underlay routing integration, policy‑based routing & application‑aware policies, VPN segmentation and secure connectivity.
• Troubleshoot WAN issues such as:
  • Packet loss, latency, circuit flaps, routing issues
• Routing & Switching Expertise
  • Strong hands‑on experience with BGP (IBGP/EBGP), OSPF, route redistribution, route‑maps, prefix‑lists.
  • Deep knowledge of Spanning Tree Protocol (STP, RSTP, BPDU Guard, Root Guard, Loop prevention).
  • Expertise in VLAN design, inter‑VLAN routing, Ether Channel configuration and troubleshooting.
• Wireless Network (Cisco 9800)
  • Manage and troubleshoot Cisco Catalyst 9800 Wireless Controllers: WLAN, Policy, Site, and RF profiles, AP provisioning (DHCP Option 43 / DNS).
  • HA‑SSO configuration and failover validation.
  • Client connectivity, roaming issues, RF interference, Incident & Problem Management.
• Lead Major Incident Management (MIM) calls and technical bridges; drive end‑to‑end ownership of incidents until closure; perform detailed Root Cause Analysis (RCA) and implement permanent fixes.
• Ensure compliance with:
  • Proactive Problem Management - analysis and identification of chronic issues in Network Infra and suggestions for improvements.
  • SLA / KPI targets.
  • Incident documentation and reporting standards.
• Support and execute:
  • Network migrations (LAN/WAN/Wireless/SD‑WAN)
  • Technology upgrades and refreshes.
  • As‑built documentation and SOPs.
• Coordinate with ISPs, OEM vendors, and internal teams; provide technical updates to client stakeholders; participate in client calls, reviews, and audits.

• Service Now (or equivalent ITSM tools).
• Monitoring tools (Solar Winds, Thousand Eyes – good to have).
• Automation knowledge:
  Python/Ansible (good to have).

• Bachelor’s degree in Engineering / Computer Science (or equivalent).
• 10–15 years of experience in Enterprise Network Operations.
• CCNP / CCIE (Routing & Switching / Enterprise).

HCL is an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, color, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, or any other protected classification, in accordance with federal, state, and/or local law. Should any applicant have concerns about discrimination in the hiring process, they should provide a detailed report of those concerns to  for investigation.

A candidate’s pay within the range will depend on their work location, skills, experience, education, and other factors permitted by law. This role may also be eligible for performance‑based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program;

401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need‑based leave with no designated number of leave days per year); and 10 paid holidays per year.