Telecom&Infrastructure Engineer

<div><h3>About ClearGrid</h3><p>ClearGrid is on a mission to<b>revolutionize the debt resolution industry</b>. We’re using<b>AI, automation, and real-time data</b>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.</p><p>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.</p><h3>Role Overview</h3><p>We 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.</p><h3>This role is about:</h3><ul><li>Owning real ISDN (E1/T1) connectivity</li><li>Managing physical gateways and hybrid routing</li><li>Controlling carrier quality and signaling integrity</li><li>Supporting both AI-driven and human dialing systems</li></ul><h3>Key Responsibilities</h3><h3>E1 / PRI Ownership</h3><p>Own 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.</p><h3>Gateway&PBX Engineering</h3><p>Configure and maintain Yeastar PBX and ISDN/GSM gateways. Manage hybrid routing (E1 + GSM + SIP), outbound dialing logic, codec/DTMF handling, and trunk failover.</p><h3>SIP, Media&Advanced Debugging</h3><p>Debug 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.</p><h3>Network&VPN for Voice</h3><p>Manage 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.</p><h3>Carrier&Vendor Ownership (UAE&KSA Mandatory)</h3><p>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.</p><h3>Requirements</h3><ul><li>5+ years in telecom / voice engineering</li><li>Strong hands-on E1/PRI troubleshooting experience</li><li>Deep SIP&RTP debugging knowledge</li><li>Direct carrier interaction experience in UAE required</li><li>Multi-site voice infrastructure scaling</li></ul><h3>Why Join ClearGrid?</h3><ul><li><b>Real ownership</b>: You’ll play a central role in building products that redefine how collections work in the future</li><li><b>Massive industry impact</b>: This is one of those rare spaces where almost everything is still to be built.</li><li><b>High-growth team</b>: We’re scaling fast, and the systems, tools, and processes you help create will shape our foundation.</li></ul></div>#J-18808-Ljbffr