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.
Key Responsibilities
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Monitor production infrastructure, servers, networks, applications, and telephony services 24×7 as per the defined shift schedule.
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Monitor CPU, memory, disk, network utilization, latency, packet loss, service availability, and system health.
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Monitor SIP/VoIP infrastructure, SIP trunks, channels, call connectivity, registration, call failures, and related telephony services.
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Troubleshoot network connectivity issues involving TCP/IP, DNS, HTTP/HTTPS, VPN, firewalls, routing, and ports.
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Monitor AWS infrastructure, including EC2, ECS, RDS, Load Balancers, CloudWatch, and other relevant services.
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Identify production incidents proactively through monitoring and alerting systems.
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Perform first-level troubleshooting and determine whether an issue is related to network, server, application, database, SIP/telephony, or third-party services.
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Escalate incidents to the appropriate DevOps, Development, SIP/VoIP, Database, or third-party team with complete technical details.
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Maintain incident logs, escalation records, and resolution documentation.
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Perform health checks before and after production deployments.
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Monitor service uptime, system performance, and infrastructure capacity.
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Coordinate with telecom/SIP providers for issues related to SIP trunks, channels, numbers, call routing, connectivity, and call quality.
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Analyze logs and network-level information to identify the root cause of incidents.
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Support troubleshooting using tools such as Ping, Traceroute, Telnet/Netcat, nslookup/dig, curl, SSH, TCPDump, Wireshark, and similar utilities.
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Monitor alerts and ensure incidents are acknowledged and resolved within defined SLA/response timelines.
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Prepare daily/weekly operational reports covering incidents, outages, recurring issues, and system health.
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Maintain proper documentation for infrastructure, monitoring, escalation matrices, and standard operating procedures.
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Participate in incident management, problem management, and post-incident RCA activities.
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Support infrastructure capacity planning by identifying trends in resource utilization and service demand.
Required Technical Skills
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Networking
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Strong understanding of TCP/IP, UDP, DNS, DHCP, HTTP/HTTPS, VPN, NAT, routing, and firewalls.
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Understanding of network troubleshooting and connectivity diagnostics.
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Knowledge of LAN/WAN and network monitoring.
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Basic understanding of load balancing and reverse proxies.
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Linux & Servers
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Good working knowledge of Linux/Ubuntu/CentOS environments.
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Comfortable with SSH and Linux command-line troubleshooting.
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Understanding of processes, services, disk, memory, CPU, and network troubleshooting.
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Basic shell scripting knowledge is an advantage.
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AWS / Cloud
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Working knowledge of AWS infrastructure.
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Familiarity with EC2, ECS, RDS, CloudWatch, IAM, VPC, Security Groups, Load Balancers, and related services.
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Ability to troubleshoot basic AWS connectivity and infrastructure issues.
SIP / VoIP / Telephony
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Experience with SIP/VoIP or telecom environments will be highly preferred.
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The candidate should have an understanding of
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SIP signaling and call flow
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SIP registration
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INVITE / BYE / ACK / CANCEL / OPTIONS
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SIP response codes
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RTP and media flow
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SIP trunking
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Concurrent channels
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Call routing
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Caller ID
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Call failures and disconnects
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Basic VoIP call-quality parameters such as latency, jitter, and packet loss
Monitoring & Troubleshooting
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Experience with monitoring/logging tools such as -
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Grafana
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Prometheus
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AWS CloudWatch
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ELK / OpenSearch
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Zabbix
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Nagios
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Datadog
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Other infrastructure/network monitoring platforms
Key Responsibilities During an Incident
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The NOC Engineer should be able to follow a structured process:
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Alert Acknowledge Validate Troubleshoot Identify Impact Escalate Monitor Resolution Confirm Recovery Document/RCA
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The candidate must be comfortable working under pressure during production outages and high-priority incidents.
Important Hiring Note
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The selected candidate must be hired and onboarded under the legal entity SidCom Technologies Pvt. Ltd.
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HR/Recruitment team should ensure that the offer letter, employment documentation, payroll, onboarding records, and other applicable employment documents are processed under SidCom Technologies Pvt. Ltd.
