AI Voice Agent Developer: ElevenLabs Custom Voices + Retell AI (Ongoing)

About the role

AI specialist for ElevenLabs custom voices and Retell AI, including MCP control with Claude or ChatGPT. Hourly and as-needed.

What you'll do

• Create hyper-realistic custom voices in ElevenLabs and get them working in Retell AI
• Control ElevenLabs and Retell AI through MCP with Claude or ChatGPT
• Tune Retell agents for latency, interruptions, voice speed, and background noise
• Give second opinions on agent builds, prompts, call flows, and integrations
• Do occasional hands-on builds or fixes

Requirements

• Experienced voice AI specialist
• Hands-on ElevenLabs Voice Design or Professional Voice Cloning
• Retell AI agent experience
• Comfortable using MCP with Claude or ChatGPT

About Upwork client

Agency that builds AI phone agents for clients.

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