NOC Engineer

Role Overview

We are looking for a NOC Engineer responsible for monitoring, managing, troubleshooting, and maintaining the availability and performance of our network, servers, telephony, and production infrastructure. The candidate will work closely with the DevOps, SIP/VoIP, CTI, Development, and QA teams to identify incidents, troubleshoot infrastructure and connectivity issues, and ensure timely resolution of production-impacting problems.

Responsibilities

• Monitor production infrastructure, servers, networks, applications, and telephony services 24×7.
• Monitor CPU, memory, disk, network utilization, latency, packet loss, and system health.
• Monitor SIP/VoIP infrastructure, including SIP trunks, channels, and call connectivity.
• Troubleshoot network connectivity issues involving TCP/IP, DNS, HTTP/HTTPS, VPN, firewalls, and routing.
• Monitor AWS infrastructure including EC2, ECS, RDS, and CloudWatch.
• Perform first-level troubleshooting and escalate incidents to appropriate teams with technical details.
• Analyze logs and network-level information to identify root causes using tools like Wireshark and TCPDump.
• Maintain incident logs, escalation records, and documentation.

Requirements

• Strong understanding of TCP/IP, UDP, DNS, DHCP, HTTP/HTTPS, VPN, and NAT.
• Good working knowledge of Linux (Ubuntu/CentOS) and command-line troubleshooting.
• Working knowledge of AWS infrastructure and services.
• Understanding of SIP signaling, call flows, and VoIP parameters like jitter and packet loss.
• Experience with monitoring tools such as Grafana, Prometheus, or Zabbix.

Skills

• AWS
• Linux
• TCP/IP
• SIP/VoIP
• Network Monitoring