Telephony Engineer - Remote
Retell Ai · Remote, India · posted Aug 26, 2026
What this role actually asks for
Extracted by RemoteHuntMust have
- •5+ years as Telephony Engineer or VoIP Engineer
- •Deep understanding of SIP Protocol (RFC 3261)
- •RTP (media) debugging voice quality issues
- •Strong Networking fundamentals (TCP/IP/TLS, DNS, Firewalls)
- •Familiarity with modern CPaaS/cloud communication platforms
- •Ability to write or modify basic scripts (Python, Bash, JavaScript)
- •Exceptional ability to guide clients and communicate technical issues
Nice to have
- •Familiarity with Asterisk/FreeSWITCH/Kamailio
Tools and technologies
Worth checking before you apply
- ⚠1099 Contractor
The full posting
ABOUT RETELL AI
Retell AI is using first principles to reimagine the call center with cutting-edge voice AI. Thousands of companies now utilize Retell’s AI voice agents to handle sales, support, and logistics calls that once required large teams of human agents.
Backed by Y Combinator, Alt Capital, and other leading investors, we have scaled to $60M ARR with a team of 40 people, up from $5M at the start of 2025. Our vision for 2026 is to build a modern CX platform where entire contact centers are powered by AI.
Instead of basic automation that needs constant human tuning, we’re creating intelligent AI “workers” that can act as frontline agents, QA analysts, and managers — continuously executing, monitoring, and improving customer interactions.
We’re growing quickly and looking for ambitious builders who want to
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