System Administrator

System Administrator

10+yrs

Kondapur, Hyderabad

Job description

• Monitor network performance, availability, and security to ensure optimal functionality.
• Troubleshoot and resolve network connectivity issues across LAN, WAN, and wireless networks.
• Respond to and manage incoming support tickets, escalating issues as necessary.
• Manage firewall configurations, security profiles, IPsec VPNs, and intrusion prevention measures.
• Configure, maintain and troubleshoot routers, switches, and firewalls (Cisco, SonicWall, Juniper SRX, Palo Alto).
• Provide technical support to internal teams and external clients via email, chat, and phone in a 24/7 environment.
• Ensure compliance with SLAs by addressing incidents and outages promptly.
• Conduct network audits and apply necessary patches, updates, and firmware upgrades.
• Maintain and optimize network monitoring tools to proactively detect and address performance bottlenecks.
• Implement and refine security measures, including access controls and endpoint protection.
• Analyze and troubleshoot network logs to detect potential threats and performance issues.
• Configure and manage wireless networks, particularly with Aruba Wireless products.
• Document network changes, update network diagrams (HLD/LLD), and maintain accurate system records.
• Design, implement, and scale network infrastructure to support business growth and operational needs.
• Assist in evaluating and integrating new networking technologies, protocols, and hardware.
• Research and recommend network improvements, including upgrades to LAN, WAN, MPLS, and cloud networks.
• Train employees on network best practices, security policies, and safe data handling procedures.
• Participate in vendor negotiations and manage contracts related to networking services.
• Support video conferencing systems and provide training for staff on usage and security.
• Assist with disaster recovery planning, including data backup and network failover strategies.

Key requirements

As a candidate for the Network Administrator role, you must fulfill the following skill and qualification requirements:

• Bachelors degree in IT, Computer Science, or a related field (Masters degree preferred).
• Minimum CCNP certification or equivalent knowledge in networking.
• Any graduation or B.E. degree with relevant technical experience.
• 5+ years of hands-on technical experience in network administration, troubleshooting, switching, and routing.
• Strong understanding of computer network infrastructure, LAN, and WAN administration.
• Experience with network security, firewall management, and VPN implementations.
• Proven ability to implement, administer, and troubleshoot network infrastructure devices such as routers, switches, and firewalls.
• In-depth knowledge of network infrastructure protocols (TCP/IP, DNS, DHCP, BGP, MPLS, VLANs, and QoS).
• Experience with network monitoring tools and performance optimization.
• Ability to analyze network issues, visualize solutions, and resolve problems efficiently.
• Hands-on experience with common industry frameworks and troubleshooting methodologies.
• Ability to create network diagrams and documentation for design and planning.
• Ability to work with all levels of IT staff and external vendors.
• Effective problem-solving skills, adaptability, and a strong safety record in network operations.

Good-to-have skills & experience:

• Experience with BGP, software-defined networking (SDN) using Cisco ACI, and NSX.
• Hands-on experience with Checkpoint/Cisco Firepower firewalls and F5 load balancers.
• Experience with software automation for network configuration and management.
• Strong background in large-scale network management and enterprise-level troubleshooting.
• Any othe relevant certifications around network administration, like Cisco Certified Network Associate (CCNA), Microsoft Certified: Azure Administrator Associate, and CompTIA Security+.