Position Details

Type Full-Time

Experience entry

Exp. Years Not specified

Education Not specified

Category Networking & Telecom

About this role

The Carrier Relations Engineer designs, builds, and supports carrier-grade voice and messaging services. This role owns SIP trunk architecture and carrier interconnect management, drives carrier onboarding testing and troubleshooting, and monitors performance metrics to improve reliability and call quality.

Key Responsibilities

Design, build, and test SIP trunking solutions for voice services including redundancy, failover, and capacity planning
Design and maintain carrier interconnects (IP and TDM where applicable) for voice and messaging traffic
Perform end-to-end testing, turn-up, and acceptance of new carriers, routes, and troubleshoot quality and interoperability issues
Manage carrier relationships as primary point of contact and coordinate escalations and maintenance through ticketing
Monitor carrier performance metrics (ASR, ACD, PDD, MOS, delivery rates) and drive continuous improvement and route optimization

Technical Overview

Technically, the role focuses on SIP trunking design and carrier interconnects (IP and TDM), including redundancy, failover, capacity planning, and end-to-end testing. It requires strong understanding of SIP signaling, RTP media, codecs, call routing, troubleshooting UDP and TLS data flows, and designing/overseeing network interconnections with BGP routing protocols, plus SMS onboarding and compliance-related requirements.

Ideal Candidate

The ideal candidate is a telecom engineer experienced in carrier-grade VoIP, with hands-on expertise designing, implementing, and troubleshooting SIP trunking and carrier interconnects. They have strong protocol depth across SIP, RTP, codecs, UDP/TLS flows, and routing with BGP, and they can manage carrier relationships while maintaining call quality and reliability.

Must-Have Skills

Demonstrate expertise in SIP trunking designimplementationand troubleshooting.Demonstrate expertise in carrier-grade VoIPsignaling protocols (SIP)RTPcodecsand principles of call routing.Work on troubleshooting UDP and TLS data flows effectively.Design and oversee carrier network interconnections and implement BGP routing protocols effectively.

Nice-to-Have Skills

Possess practical understanding of SMS infrastructure

Tools & Platforms

SIPRTPBGPTLSUDPIP and TDM

Required Skills

Carrier-grade voice and messaging servicesSIP trunkingcarrier interconnectsIP and TDMredundancyfailovercapacity planningend-to-end testingturn-upacceptancecall flowsSIP signalingRTP mediatroubleshootingcarrier performance metrics (ASRACDPDDMOSdelivery rates)route optimizationcarrier APIsprovisioningroutingreportingautomationSMS onboardingtestingtroubleshootingUDPTLSBGP routingSIPRTPcodecscall routingnumberingCLIlawful intercept

Hard Skills

SIP trunkingSIP trunk architecturecarrier interconnectsIP and TDMcapacity planningredundancyfailoverend-to-end testingturn-upacceptance of new carrierscall flowssignaling (SIP)media (RTP)quality and interoperability issuescarrier performance metrics (ASRACDPDDMOSdelivery rates)route optimizationcost managementquality balancingcarrier-grade VoIPRTPcodecscall routingUDP data flowsTLS data flowstroubleshooting UDP and TLS data flowscarrier network interconnectionsBGP routing protocolsSMS infrastructurecarrier APIs for provisioningroutingreportingautomationSMS onboardingSMS testingSMS troubleshootingdelivery failuresnumberingCLISMS compliancelawful intercept obligationslocal and international telecom regulationsregulatory requirements for new market entrytechnical due diligence for new carrier partnershipsticketing and escalation processes

Soft Skills

manage relationships with carrier partnersprimary point of contactcoordinate carrier escalationswork with engineeringoperationsand commercial teamscollaborate with internal teamsdrive continuous improvementprovide engineering input for product launches

Industry & Role

Industry Telecom

Job Function Manage and engineer carrier integrations to deliver reliable voice (VoIP) and messaging (SMS) services

Role Subtype VoIP Engineer

Tech Domains VoIP / Unified Communications, Networking / TCP-IP

Clearance & Visa

Visa Sponsorship No

Keywords for Your Resume

Carrier Relations EngineerCREGlobal Telecom OperationsSIP trunkingSIP trunk architecturecarrier interconnectsIP and TDMredundancyfailovercapacity planningend-to-end testingturn-upacceptance testingcall flowsSIP signalingRTP mediacarrier-grade VoIPcodecscall routingUDPTLStroubleshootingBGP routing protocolsSMS onboardinglawful interceptCLIticketing and escalation processesSIPRTP

Deal Breakers

Demonstrate expertise in SIP trunking design, implementation, and troubleshooting, Demonstrate expertise in carrier-grade VoIP, SIP, RTP, codecs, and call routing principles, Must be able to troubleshoot UDP and TLS data flows and implement BGP routing protocols

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