AI Voice Agent Developer – Vapi, Retell, Twilio & n8n Integrations
Worldwide
We are building AI voice agents for appointment scheduling, lead qualification, and outbound follow-up. We need a hands-on developer who has shipped production voice agents end-to-end. What You Will Do Build and configure voice agents on Vapi or Retell Design conversation flows, escalation logic, and human handoff Integrate with CRMs and booking systems via n8n and webhooks Build post-call automation — transcripts, follow-ups, CRM updates Document everything cleanly for handoff Required Experience Production voice agents shipped on Vapi, Retell, or equivalent Hands-on Twilio, ElevenLabs, and n8n experience API integration and prompt guardrail design To Apply Have you shipped a production voice agent? Briefly describe it. How do you prevent hallucination in production agents? Share a portfolio, Loom video, or live example.
$50.00
Fixed-price- IntermediateExperience Level
- Remote Job
- One-time projectProject Type
Skills and Expertise
Activity on this job
- Proposals:20 to 50
- Last viewed by client:1 hour ago
- Interviewing:0
- Invites sent:1
- Unanswered invites:0
About the client
- United StatesCergy-Pontoise10:43 AM
- $6.1K total spent246 hires, 17 active
- 18 hours
Explore similar jobs on Upwork
How it works
Create your free profileHighlight your skills and experience, show your portfolio, and set your ideal pay rate.
Work the way you wantApply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
Get paid securelyFrom contract to payment, we help you work safely and get paid securely.
About Upwork
- 4.9/5(Average rating of clients by professionals)
- G2 2021#1 freelance platform
- 49,000+Signed contract every week
- $2.3BFreelancers earned on Upwork in 2020
Find the best freelance jobs
Growing your career is as easy as creating a free profile and finding work like this that fits your skills.
Trusted by