Telecom & Infrastructure Engineer

About ClearGridClearGrid is on a mission to revolutionize the debt resolution industry. We’re using AI, automation, and real-time data to completely rethink how debt collection works, unlocking better outcomes for institutions and individuals alike. Think of us as rebuilding the collections —starting from scratch, with modern tools.We're a fast-growing startup with ambitious goals, and we’re looking for builders who are hungry to make a real dent in a space with massive untapped potential.Role OverviewWe are seeking a highly skilled and experienced Telecom & Infrastructure Engineer – Voice & Telco Systems. This role owns the end-to-end telecom and voice infrastructure that connects on‑premise telco providers (ISDN) to our cloud‑hosted PBX and AI systems. The engineer will be responsible for designing, maintaining, troubleshooting, and scaling voice connectivity, while acting as the technical owner for telco vendors, especially across UAE and Saudi Arabia.This role is about:Owning real ISDN (E1/T1) connectivityManaging physical gateways and hybrid routingControlling carrier quality and signaling integritySupporting both AI-driven and human dialing systemsKey ResponsibilitiesE1 / PRI OwnershipOwn and manage ISDN PRI (E1/T1) lines end-to-end, including Q.931 signaling, channel allocation, DID/CLI mapping, clocking, framing, and line error troubleshooting (CRC, slips, alarms). Scale multi-E1 deployments across locations.Gateway & PBX EngineeringConfigure and maintain Yeastar PBX and ISDN/GSM gateways. Manage hybrid routing (E1 + GSM + SIP), outbound dialing logic, codec/DTMF handling, and trunk failover.SIP, Media & Advanced DebuggingDebug SIP signaling, RTP/RTCP media flows, NAT traversal, one-way audio, and call setup failures using Wireshark, SIP traces, and gateway logs. Experience with OpenSIPS, Asterisk/FreeSWITCH, RTPengine, SBC concepts, SIPREC preferred.Network & VPN for VoiceManage Fortinet site-to-site VPNs and firewall rules for SIP/RTP traffic. Optimize IPSec performance, resolve NAT/asymmetric routing issues, and ensure low-latency media paths for high-concurrency dialing.Carrier & Vendor Ownership (UAE & KSA Mandatory)Directly manage telecom providers (DU, Etisalat, STC, Salam, Mobily, Zain). Lead provisioning, migrations, and escalations. Ensure routing quality, compliance (CLI/DID), and end-to-end service reliability without middlemen.Requirements5+ years in telecom / voice engineeringStrong hands-on E1/PRI troubleshooting experienceDeep SIP & RTP debugging knowledgeDirect carrier interaction experience in UAE requiredMulti-site voice infrastructure scalingWhy Join ClearGrid?Real ownership: You’ll play a central role in building products that redefine how collections work in the futureMassive industry impact: This is one of those rare spaces where almost everything is still to be built.High-growth team: We’re scaling fast, and the systems, tools, and processes you help create will shape our foundation.#J-18808-Ljbffr