Al Voice Agent Developer Needed for Inbound & Outbound Call Automation

Posted 14 hours ago

Worldwide

Summary

We are missing leads because inbound calls are not always answered, outbound follow-ups are delayed, and our team spends too much time qualifying prospects, booking appointments, writing notes, and updating CRM records manually. We need an AI voice automation developer to build a reliable inbound and outbound calling workflow that can answer calls, make follow-up calls, qualify leads, collect details, summarize conversations, update our CRM, book appointments, and trigger human handoff when needed. Skills / Tech Stack: OpenAI API, Claude API, Vapi, Retell AI, Bland AI, ElevenLabs, Twilio, Python, FastAPI, LangChain, LangGraph, Webhooks, API Integration, GoHighLevel, HubSpot, Make.com, Zapier, PostgreSQL, Docker, Call Transcript Processing, Appointment Booking Automation Scope: Build inbound and outbound AI calling workflows Create call scripts and lead qualification logic Connect calls through Twilio, Vapi, Retell AI, Bland AI, or ElevenLabs Capture transcripts, summaries, lead details, and call outcomes Update CRM records and trigger follow-ups automatically Add call logs, error handling, and clear documentation We want to reduce missed calls, improve lead response time, and automate repetitive sales/support calling with a reliable AI voice agent.

  • $5.00

    Fixed-price
  • Intermediate
    Experience Level
  • Remote Job
  • One-time project
    Project Type
Skills and Expertise
Mandatory skills
English
VoIP Software
Customer Service
Nice-to-have skills
Asterisk
VoIP Administration
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:1 hour ago
  • Hires:
    1
  • Interviewing:
    0
  • Invites sent:
    1
  • Unanswered invites:
    0
About the client
Member since Aug 17, 2025
  • United States
    Wilmington7:31 PM
  • $11K total spent
    432 hires, 8 active
  • 143 hours

Explore similar jobs on Upwork

Quantum Computing
Predictive Model
SQL
pandas
Data Science
Python
Machine Learning
Python Scikit-Learn
Deep Learning
Predictive Analytics
Data Analysis

How it works

  • Post a job icon
    Create your free profile
    Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
  • Talent comes to you icon
    Work the way you want
    Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
  • Payment simplified icon
    Get paid securely
    From contract to payment, we help you work safely and get paid securely.
Want to get started? Create a profile

About Upwork

  • Rating is 4.9 out of 5.
    4.9/5
    (Average rating of clients by professionals)
  • G2 2021
    #1 freelance platform
  • 49,000+
    Signed contract every week
  • $2.3B
    Freelancers 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

  • Microsoft Logo
  • Airbnb Logo
  • Bissell Logo
  • GoDaddy Logo