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I will fix build ai voice agent calling agent vapi retell livekit pipecat receptionist
David L
About this gig
Build an AI voice agent or AI calling agent for your business, startup, agency, or personal use with inbound calls, outbound calling, appointment booking, lead qualification, customer support, or an AI receptionist.
I build custom voice AI systems connecting your phone, knowledge base, calendar, CRM, and business logic. Your agent can answer questions, qualify leads, book appointments, transfer calls, capture caller details, send summaries, and trigger follow-ups.
SUPPORTED STACKS:
Vapi, Retell AI, LiveKit, Pipecat, Synthflow, ElevenLabs, Twilio, Telnyx, OpenAI Realtime, and compatible voice APIs. I can also build dashboards or SaaS layers with Next.js, v0, Stripe, webhooks, databases, and custom APIs.
USE CASES:
- AI receptionist and phone answering
- Inbound/outbound AI calling
- Sales, lead qualification, appointment setting
- Customer support and business information
- Personal AI phone agents
- Startup MVPs and production voice AI
- White-label and multi-tenant SaaS
Whether you need one AI agent or a multi-tenant platform, I design around your call flow, provider, integrations, volume, and budget.
Send your use case, target country, call flow, preferred stack, and integrations.
Get to know David L
David L
AI Systems Specialist, Automation, Generative AI and Content Workflow for Smart
- FromUnited Kingdom
- Member sinceOct 2026
- Avg. response time1 hour
Languages
English, Spanish, German, French, Italian, Portuguese
I build AI-powered workflows and content systems that help businesses, agencies, and creators save time and scale production. My services include business process automation, API integrations, AI agents, data workflows, and automated CRM, lead, and reporting systems. I also create generative AI pipelines with ComfyUI, LoRA workflows, Kling AI, and Runway, plus social media content automation and publishing. I focus on practical, reliable solutions tailored to your goals and existing tools. Tell me what you want to automate or create, and let’s design the right system that can scale.
Other Software Development Services I Offer
FAQ
Can you build an AI voice agent for just one business?
Yes. This Gig is not limited to multi-tenant SaaS. I can build a single-business AI voice agent, AI receptionist, inbound calling agent, outbound calling agent, appointment setter, or customer-support phone agent. Multi-tenant architecture is available when you need to serve multiple businesses.
Which AI voice platforms can you use?
I can work with platforms and realtime voice technologies including Vapi, Retell AI, LiveKit, Pipecat, Bland AI, Synthflow, and OpenAI Realtime, depending on the requirements. I can recommend the most suitable architecture based on your call flow, integrations, latency, scale, and budget.
Can the AI agent handle inbound and outbound calls?
Yes. Depending on the selected voice and telephony stack, I can build inbound reception, outbound calling, lead qualification, appointment booking, customer support, call routing, and follow-up workflows. The exact capabilities depend on the provider, phone setup, country, and use case.
Can you connect the AI voice agent to my CRM and calendar?
Yes. I can integrate supported CRMs, calendars, databases, webhooks, and APIs so the voice agent can retrieve information and trigger actions. Examples include appointment booking, lead creation, call summaries, customer updates, and automated follow-ups.
Can you build a white-label or multi-tenant AI voice SaaS?
Yes. The Premium package can include an admin dashboard, separate business accounts, isolated data, roles, branding, billing, usage tracking, agent configuration, and webhook/API integrations. The exact tenant count and feature scope should be defined before development.
What are the ongoing costs for an AI voice agent?
Your ongoing costs can include voice minutes, phone numbers, speech or AI usage, hosting, databases, and third-party platform subscriptions. These costs vary by provider and call volume. I can help structure the system around your expected usage before development begins.
