NOC Engineer (PBX) - Remote

Adit; India; Vor Ort; INR 2.000.000 - 3.200.000; Vollzeit

Zusammenfassung

Adit in India seeks a Senior NOC Engineer with 6–8 years in a 24/7 operations center to support a high-concurrency VoIP PBX. You will monitor, triage incidents, runbooks, and coordinate with Tier-3 teams; leadership during shifts and mentoring juniors. Strong English is required.

Hands-on with Kamailio/OpenSIPS and FreeSWITCH/Asterisk, plus GCP Compute Engine, PostgreSQL, PgBouncer, and observability tools such as Homer, Grafana, and Wireshark.

Qualifikationen

• 6–8 years in a 24x7 technical operations center with VoIP focus.
• Hands-on with Kamailio/OpenSIPS and FreeSWITCH/Asterisk configurations and logs.
• Strong knowledge of SIP signaling, RFCs, SDP, and RTP/RTCP.
• GCP Compute Engine VM, VPC, firewall, and external IP architectures.
• PostgreSQL Cloud SQL, PgBouncer, and high call-volume analysis.
• Observability tools: Homer, Wireshark, sngrep, Prometheus, Grafana.
• Incident management: PagerDuty, Opsgenie, Jira Service Desk, Slack.
• Calm under pressure with clear verbal and written English communication.
• Analytical mindset to isolate network vs app issues.

Aufgaben

• 24/7 Eyes-on-Glass monitoring across Grafana, GCP Monitoring, and Homer.
• Incident triage and runbook remediation for VoIP faults.
• Coordinate tier-3 escalations and mentor junior NOC operators.
• Analyze media quality issues (MOS, jitter, packet loss) and traces.
• Manage interconnects with static IP trunks and SIP signaling checks.
• Escalate unresolved issues to DevOps, VoIP Core, or DBEs with context.

Kenntnisse

VoIP troubleshooting

SIP signaling

Kamailio/OpenSIPS

FreeSWITCH/Asterisk

PostgreSQL / Cloud SQL

GCP Compute Engine

Grafana / Prometheus / Homer

Incident management tools

English communication

Leadership / mentorship

Tools

Kamailio/OpenSIPS

FreeSWITCH/Asterisk

PostgreSQL / PgBouncer

Wireshark / sngrep

Grafana / Prometheus

Jobbeschreibung

We are looking for a highly skilled Senior NOC Engineer with 6 to 8 years of experience to join our 24/7 Network Operations Center. In this role, you will be the second-line anchor for a high-concurrency production VoIP PBX platform.

You will be responsible for real-time proactive monitoring, incident triage, and runbook remediation of our real-time communication (RTC) stack. This includes managing Kamailio edge proxies, FreeSWITCH media engines, and PostgreSQL databases, all running on Google Cloud Platform (GCP) Compute Engine VMs with dedicated static IP carrier trunks. You will manage P1/P2 alerting flows, coordinate tier-3 engineering escalations, and protect core telephony uptime.

• 24/7 Eyes-on-Glass Monitoring: Proactively monitor platform health dashboards across Grafana, GCP Cloud Monitoring, and Homer (SIPcapture) to detect signaling drops, media quality degradation, or infrastructure bottlenecks.
• Incident Triage & Response: Act as the Tier 2 technical first responder for platform alerts. Accurately classify incidents vs. outages according to business logic (P1 to P5 matrix).
• Runbook Execution & Remediation: Execute specialized technical runbooks to resolve complex VoIP faults (e.g., clearing stuck SIP registrations, flushing PgBouncer connection pools, safely draining/bypassing misbehaving FreeSWITCH instances).
• VoIP Media Quality Analysis: Troubleshoot voice quality spikes (Jitter >50ms, Packet Loss >2%) and analyze Mean Opinion Score (MOS) degradation using Homer SIP ladder diagrams.
• Carrier Interconnect Monitoring: Manage links tied to static public IP carrier trunks. Monitor SIP OPTIONS pings and immediately troubleshoot authentication issues (SIP 401/403) or error loops (SIP 503).
• Escalation & Collaboration: Gather raw packet traces (sngrep / Wireshark) and technical context during major incidents to smoothly **escalate** unresolved issues to Tier 3 DevOps, VoIP Core, or Database Engineers.
• Leadership & Mentorship: Act as the Shift Lead during critical hours, mentoring junior NOC operators, managing incident communication channels, and refining technical runbooks.

Technical Requirements & Qualifications

• Experience: 6 to 8 years in a 24x7 technical operations center environment, with a heavy emphasis on VoIP, SIP Signaling, and Cloud Infrastructure.
• VoIP Stack Expertise: Direct, hands-on experience troubleshooting and managing Kamailio (or OpenSIPS) and FreeSWITCH (or Asterisk) configurations and logs.
• Protocol Proficiency: Deep understanding of SIP signaling, RFC standards, SDP negotiation, and RTP/RTCP media streaming behaviors.
• Cloud Platform Skills: Strong proficiency with Google Cloud Platform (GCP) core services, specifically Compute Engine Virtual Machines (VMs), VPC Networking, Cloud Firewall, Layer 4 Network Load Balancers, and Static External IP architectures.
• Database Foundations: Competence working with PostgreSQL (specifically Cloud SQL environments); ability to analyze active connection volumes, understand PgBouncer states, and identify query blockages during high call volume.
• Observability Tools: Hands-on experience navigating Homer (SIPcapture), Wireshark, sngrep, Prometheus, and Grafana alert configurations.
• Tooling: Familiarity with Incident Management systems such as PagerDuty, Opsgenie, Jira Service Desk, and Slack integrations.
• Calm Under Pressure: Proven ability to handle live, high-stress P1 Critical Outage scenarios with structure and focus.
• Clear Communicator: Strong verbal and written English communication skills to act as a bridge between technical engineering pods and customer-facing support teams.
• Problem Solver: Analytical mindset capable of isolating a network hop failure vs. a software application core dump.