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Sr Network Administrator

HCL Global Systems

Position Overview
We are seeking a skilled Network Administrator to support and maintain enterprise network infrastructure, ensuring the stability, integrity, and efficient operation of data networks and services. This role involves deploying, managing, and optimizing both on-premise and cloud-based network environments. The ideal candidate will thrive in a collaborative, fast-paced environment and play a key role in supporting critical business operations.

Key Responsibilities
  • Design, deploy, and maintain network infrastructure across LAN, WAN, and cloud environments (Azure/AWS)
  • Configure and support network hardware, firewalls, and third-party cloud connectivity solutions
  • Troubleshoot complex network issues using packet capture analysis, logs, and performance metrics
  • Collaborate with internal teams and external vendors to design and optimize network topology, routing, and service levels
  • Develop and implement monitoring, alerting, and response runbooks to ensure optimal network performance
  • Adhere to Incident, Problem, and Change (CAB) management processes
  • Perform capacity planning and support disaster recovery initiatives to ensure business continuity
  • Assist project teams with network architecture and solution design for new implementations
  • Coordinate installation and upgrades of network hardware and software across enterprise environments
  • Evaluate and recommend network technologies, products, and standards
  • Manage lifecycle of network devices, including patching, upgrades, and hardware refreshes
  • Deploy and maintain security infrastructure including firewalls, intrusion detection/prevention systems, and antivirus solutions
  • Design and implement Wireless LAN (WLAN) solutions
  • Engage with vendors and service providers for procurement and support of network services
  • Maintain accurate and up-to-date network documentation

Required Qualifications & Experience
  • 2-4 years of hands-on experience in network administration or a related role
  • Strong experience with:
    • Palo Alto Firewalls
    • Cisco Catalyst & Nexus switches
    • Cisco Wireless solutions (Client, Prime Infrastructure)
    • F5 BIG-IP (various modules)
  • Experience with public cloud networking (Azure and/or AWS)
  • Proficiency with Windows and Linux operating systems
  • Familiarity with automation tools and frameworks such as Ansible, Nornir, Python, Terraform, or Go
  • Solid understanding of networking protocols, routing, switching, and security principles
  • Experience supporting data center environments or working with managed data center providers
  • Strong troubleshooting, analytical, and problem-solving skills
  • Excellent written and verbal communication skills

Preferred Qualifications
  • Experience with monitoring and network management tools such as:
    • LogicMonitor
    • NetScout
    • NetBox
    • Temporal
  • Exposure to infrastructure automation and DevOps practices

Additional Requirements
  • Willingness to provide off-hours and weekend support as needed
  • Ability to participate in a 24/7 on-call rotation
  • Occasional travel may be required
Vacancy posted 4 days ago
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