Responsibilities
- Own and operate European SBC infrastructure (OpenSIPS/Kamailio).
- Configure, monitor, and troubleshoot SIP trunks for enterprise clients.
- Ensure high-availability voice delivery with sub-second failover.
- Integrate AI voice agents with CCaaS/UCaaS platforms such as Genesys Cloud, Five9, NICE CXone, RingCentral, Zoom, 8x8, and others.
- Handle OAuth flows, SIP header parsing, queue routing, and agent-availability checks.
- Diagnose call quality issues—latency, jitter, one-sided audio, codec negotiation failures—using Wireshark, tshark, mtr, and ffmpeg.
- Capture and analyze SIP call flows end-to-end.
- Optimize call flows, IVRs, routing logic, and contact center performance across client deployments.
- Support trunk provisioning and incident resolution with carriers and telephony vendors as needed.
- Maintain and improve telephony infrastructure in Kubernetes.
- Write automation scripts and tooling in Golang, JavaScript, or Python.
- Contribute to CI/CD pipelines and monitoring.
- Join technical calls with enterprise clients and their telephony partners.
- Translate complex SIP and networking issues into clear language for non-technical stakeholders.
- Create and maintain documentation on infrastructure, integrations, and procedures.
- Help evaluate and deploy next-generation real-time communication tools (LiveKit, WebRTC) as the voice stack evolves.
Requirements
- Deep SIP/VoIP expertise.
- OpenSIPS or Kamailio experience.
- Strong networking fundamentals.
- Proficient with Wireshark/tshark, mtr, traceroute, and packet-level debugging.
- CCaaS/UCaaS/PBX knowledge.
- DevOps competency.
- Proficiency in at least one of: Golang, JavaScript/Node.js, or Python for scripting, automation, and tooling.
- Audio engineering basics.
- Experience with system integration via APIs, webhooks, and middleware platforms.
- Strong troubleshooting skills across networks, voice quality issues, and platform interoperability in enterprise environments with high availability and scalability needs.
- Excellent communication and documentation skills.
- Fluent English, written and spoken.
Nice to Have
- Networking or SIP School certifications.
- Experience with telephony vendors and SBC platforms such as Ribbon, Oracle, or Oculeus.
- Familiarity with LiveKit or WebRTC-based real-time communication frameworks.
- Experience working with European telcos and carriers.
- Carrier-side provisioning experience (number porting, trunk setup, regulatory compliance).
- Certifications in Genesys, NICE, or equivalent telephony solutions.
- Exposure to contact center analytics and reporting tools.
Benefits
- Opportunity to work at a high-growth AI startup, backed by top investors.
- Fast Growth - Backed by a16z and YC, on track for eight figure ARR.
- Ownership & Autonomy - Take full ownership of projects and ship fast.
- Top-Tier Compensation - Competitive salary + equity in a high-growth startup.
- Work With the Best - Join a world-class team of engineers and builders.
Work Arrangement
Remote (City/Region)
Team
Structure: You'll work closely with our US-based telephony lead and the Forward Deployed Engineering team embedded with customers.
Additional Information
- Fluent English, written and spoken.
