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Mattaeo Stone
@mattaeo_stone
WhatsApp API, Meta Verification and CRM Automation Specialist
Italy
Italian, English
About me
I help businesses fix and set up WhatsApp API, Meta verification, and CRM automation (GoHighLevel, HubSpot, Zoho, Pipedrive). I also build AI agents, voice AI (Vapi, Retell, ElevenLabs), and vibe-coded apps using Lovable, Base44, Bolt.new, Cursor, Replit, and Wix Velo, deploying, debugging, and security-auditing what other freelancers can't touch. From rejected verifications to broken n8n workflows to vulnerable vibe-coded apps, I fix the exact error blocking you, then automate, deploy, or scale the rest. Honest, fast delivery, no guesswork, no hype.
Skills
Mattaeo Stone
Offline •
Average response time: 5 hours
See my services
Rule Based Chatbots
I will fix meta whatsapp verification whatsapp cloud api twilio business manager suite
Automations & Agents
I will fix hermes agent jarvis ai obsidian second brain claude code kimi k3 grok bot
Work experience
AI Agent, Voice AI & Vibe Coding Deployment Engineer
TechnoNext • Freelance
Sep 2023 - Present • 3 yrs
Deployed, debugged, and security-audited vibe-coded applications built in Lovable, Base44, Bolt.new, Cursor, and Replit, taking founder prototypes from broken deployment to production-ready. Built and deployed AI agents and multi-agent systems using LangGraph, CrewAI, AutoGen, and n8n, including a Hermes Agent/Obsidian memory integration and a Telegram-based personal assistant. Built voice AI agents on Vapi, Retell AI, and ElevenLabs, fixing broken conversation pipelines and GoHighLevel voice workflow errors. Published apps to the Play Store, fixed failed Netlify, Vercel, and Firebase deployments, and ran security audits on vibe-coded apps to catch exposed API keys and unvalidated inputs before launch.
CRM Automation & WhatsApp Integration Developer
CRMXO • Freelance
Mar 2023 - Present • 3 yrs 6 mos
Built CRM automation systems for real estate, field service, healthcare, and coaching businesses using GoHighLevel, HubSpot, Zoho, and Pipedrive. Designed workflows connecting WhatsApp, email, and SMS into a single pipeline, reducing manual lead follow-up and improving response times. Integrated Respond.io and WATI for WhatsApp-specific CRM messaging, and used Zapier and n8n to wire CRMs into third-party tools including Google Sheets, Airtable, and Slack. Fixed broken CRM automations inherited from previous developers, auditing workflow logic and rebuilding triggers so leads stopped falling through the cracks. Delivered HIPAA-conscious CRM setups for healthcare clients where data handling requirements were non-negotiable.
WhatsApp API, Meta Verification & CRM Automation Specialist
Technoloy • Self-employed
Feb 2022 - Present • 4 yrs 7 mos
Delivered end-to-end WhatsApp Business API and Meta Business Verification setups for agencies, SaaS founders, and small businesses, fixing rejected verifications, Coexistence errors, and banned WABAs that other freelancers could not resolve. Built CRM automation systems on GoHighLevel, HubSpot, Zoho, and Pipedrive, connecting WhatsApp, voice AI (Vapi, Retell, ElevenLabs), and AI agents (n8n, Make, LangGraph, CrewAI) into unified client workflows. Also deployed, debugged, and security-audited vibe-coded applications built in Lovable, Base44, Bolt.new, and Cursor, taking founder prototypes from broken deployment to production-ready. Known for diagnosing the exact technical error blocking a client before proposing any fix, reducing wasted back-and-forth and rework.
