Projects using Twilio in SpainProjects using Twilio in Spain## Case Study 1: AI Phone Receptionist
**Tagline:** A 24/7 voice AI that handles calls, books appointments, and takes payments — without a human.
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**The Challenge:**
Service businesses lose significant revenue when calls go unanswered outside business hours or during peak times. Hiring and training front-desk staff is expensive, inconsistent, and doesn't scale. Most small and mid-size operations simply miss calls — and those missed calls are missed revenue.
**The Solution:**
- Built a voice AI system using Twilio/Telnyx for telephony and Claude API for real-time natural language understanding, capable of handling inbound calls end-to-end
- Integrated appointment booking logic directly into the call flow — callers can schedule, reschedule, or cancel without speaking to a human
- Connected Stripe for in-call payment processing and n8n for backend orchestration (CRM updates, confirmation emails, Slack alerts)
- Deployed via FastAPI with webhook handlers for call events, SMS follow-ups, and fallback escalation to a human agent when needed
**The Results:**
*(Estimated based on system design and architecture — not from a specific client engagement)*
- **100% call coverage** — system designed to handle unlimited concurrent inbound calls with no wait time or missed calls
- **~70% reduction in front-desk workload** — routine calls (booking, FAQs, payments) handled without human intervention
- **Estimated 4–6 hrs/day recovered** per staff member previously tied to phone duties
**Tech Stack:**
`Twilio / Telnyx` · `Claude API (Anthropic)` · `n8n` · `FastAPI` · `Python` · `Stripe` · `PostgreSQL` · `Redis` Kazfen Lead Capture Engine — AI Intake System for Roofing Contractors
Built the lead intake layer powering Kazfen’s AI pipeline.
The system captures homeowner requests, structures job data, and feeds the AI engine for qualification, prioritization, routing, and follow-up automation.
Captured signals include roof type, urgency, location, insurance status, inspection timing, and service request details.
Features:
• Roofing-specific lead intake flow
• Structured AI-ready data capture
• Contractor routing logic
• Qualification pipeline trigger system
• AI enrichment preparation
• Downstream automation workflows
• Lead-to-agent architecture
This intake layer powers the entire Kazfen automation stack from lead submission to qualification, scoring, SMS workflows, and contractor actions.
Stack: FastAPI • PostgreSQL • Claude • Twilio • Stripe Kazfen — AI Lead Intelligence & Qualification Engine for Roofers
Built and deployed a production AI platform for roofing contractors that captures leads, scores opportunities, qualifies jobs, estimates value, drafts follow-ups, and prioritizes next actions automatically.
Features shown:
• AI lead enrichment + scoring
• Insurance detection + urgency analysis
• Estimated job value intelligence
• Contractor assignment workflows
• AI recommendations + next actions
• Voice pipeline + SMS automation
• Production SaaS deployment
Stack: FastAPI, PostgreSQL, Twilio, Claude, Stripe, Render.