Network Administrator - CISCO/VOIP

Responsibilities : - Design, implement, and maintain complex network infrastructures, including LAN, WAN, and WLAN. - Configure and manage CISCO routers, switches, and other network devices. - Monitor network performance and troubleshoot network issues. - Implement and maintain network security policies and procedures. - Design, implement, and maintain CISCO VOIP systems, including CUCM (Cisco Unified Communications Manager), Unity Connection, and related technologies. - Configure and manage VOIP endpoints, gateways, and call routing. - Troubleshoot VOIP issues and ensure high-quality voice communication. - Implement and maintain VOIP security best practices. - Design, implement, and manage Azure virtual networks, subnets, and network security groups (NSGs). - Configure and manage Azure VPN gateways and ExpressRoute connections. - Troubleshoot Azure network connectivity issues. - Integrate on-premises network infrastructure with Azure cloud services. - Configure and manage firewalls (CISCO ASA, Palo Alto) to secure network perimeters. - Implement and maintain firewall rules and policies. - Monitor firewall logs and identify security threats. - Perform regular firewall audits and vulnerability assessments. - Implement and maintain network security best practices and policies. - Conduct security audits and vulnerability assessments. - Ensure compliance with relevant industry standards and regulations. - Develop and maintain network security documentation. - Create and maintain detailed network documentation, including diagrams, configurations, and procedures. - Prepare regular reports on network performance, security, and availability. - Maintain accurate inventory of network hardware and software assets. - Collaborate with other IT professionals to design and implement network solutions. - Provide technical support and guidance to end-users. - Communicate effectively with team members and stakeholders. - Participate in on-call rotations and provide after-hours support as needed. Key Skills and Expertise : - Extensive experience in network administration, including LAN, WAN, and WLAN management. - Strong understanding of networking protocols (e.g., TCP/IP, DNS, DHCP, BGP, OSPF). - Expert-level knowledge of CISCO routers, switches, and other network devices. - Proficiency in CISCO IOS and NX-OS. - CCNA/CCNP/CCIE certification is highly desirable. VOIP : - Extensive experience with CISCO VOIP systems, including CUCM, Unity Connection, and related technologies. - Deep understanding of SIP, H.323, and other VOIP protocols. - Experience with VOIP troubleshooting and performance tuning. - Strong experience with Azure virtual networks, subnets, NSGs, and VPN gateways. - Knowledge of Azure ExpressRoute and hybrid networking. - Experience with configuring and managing firewalls (e.g., CISCO ASA, Palo Alto). - Knowledge of firewall rules, policies, and security best practices. - Strong understanding of network security principles and best practices. - Experience with security audits and vulnerability assessments. - Excellent problem-solving and troubleshooting skills. - Strong communication and interpersonal skills. - Ability to work independently and as part of a team. Qualifications : - Bachelor's degree in Computer Science, Information Technology, or a related field. - 8-12 years of experience as a CISCO Network Administrator, with a focus on VOIP. - Relevant CISCO certifications (CCNA, CCNP, CCIE) are highly desirable. - Experience with Azure certifications (AZ-700) is also a plus. - Candidates must be ready to join within 0-30 days. (ref:hirist.tech)

Location: bangalore, IN

Posted Date: 5/1/2025