Senior Network Engineer – VoIP / Real-Time Communications
Practice by Numbers (PBN) | Gurugram / Kolkata, India

About Practice by Numbers

Practice by Numbers is a leading dental practice management SaaS platform serving over 1,500 dental practices across North America, providing practice management, VoIP telephony, payments, and advanced analytics. The platform is evolving into an AI-first product, adding conversational automation and intelligent communication workflows for patients and front-office teams.

About the Role

This role owns the network connectivity and real-time communications infrastructure that enables PBN's VoIP platform to reliably communicate with customer networks, SIP carriers, and the public internet.

The engineer will be responsible for troubleshooting end-to-end VoIP connectivity and media issues across the entire network path — from customer phones and LAN infrastructure through switches, routers, firewalls, VLANs, Wi-Fi, VPNs and ISP connections, to PBN's SIP infrastructure and upstream carriers.





This is a hands-on production troubleshooting role requiring solid networking fundamentals combined with a deep understanding of SIP, RTP, NAT traversal, and real-time communications. The engineer should be able to analyze SIP/RTP traffic at the packet level, determine where a signaling or media failure is occurring, and clearly guide a customer's IT/network team toward the appropriate resolution.

The engineer will work closely with PBN's SIP/VoIP engineering team, customer IT teams, carriers, and
support/operations teams to diagnose and resolve complex voice-quality, connectivity, registration,
signaling, and media-path issues.

Key Responsibilities
- Own end-to-end network troubleshooting for PBN's VoIP traffic between customer environments, PBN's SIP infrastructure, and upstream carriers/PSTN networks.
- Diagnose SIP signaling and RTP media issues across customer LANs, firewalls, routers, switches, Wi-Fi networks, VPNs, ISP connections, an

📌 Senior Network Engineer (Gurugram)
🏢 Practice by Numbers
📍 Gurugram