Hamza A.

I build AI agents, AI voice agents (Vapi, Retell, ElevenLabs) and AI automations in n8n, Make and GoHighLevel, plus the Next.js apps around them. Top Rated, 100% Job Success. Recent work - AI customer support voice agent for a 7-figure DTC supplement brand (ElevenLabs, n8n, Twilio, Shopify). It answers calls 24/7, handles order status, subscription swaps, pauses and cancellations, and talks customers out of cancelling. Return customer rate went from 6.88% to 28.87% in the first month, and it helps protect roughly $198k/month that used to leak through missed calls. - AI assistant inside a real estate CRM: a LangGraph.js agent on Node.js and PostgreSQL/pgvector, running on a self-hosted LLM (vLLM on NVIDIA DGX Spark). - AI valuation platform for a forestry firm (Next.js, Supabase, n8n, OpenAI). Enter a cadastral number, get a full valuation in seconds, built on state forest inventory and LiDAR data. - AI receptionist for roofing companies (Vapi, n8n, GoHighLevel, Twilio) that books appointments and syncs every call to the CRM. - Client portal and admin dashboard for a voice AI agency (Next.js, Supabase). What I build - AI agents and chatbots: OpenAI and Claude agents with tool calling, RAG chatbots trained on your data, LangGraph agents and LLM apps, including self-hosted models. - AI voice agents: inbound AI receptionists, outbound AI calling, appointment setters, lead qualification and customer support agents on Vapi, Retell AI and ElevenLabs, connected to Twilio, your calendar and your CRM. - AI automation: n8n, Make and Zapier workflows, GoHighLevel and HubSpot CRM automation, lead routing, follow-ups, reporting, webhooks and API integrations. - Full-stack web apps: Next.js, React, Node.js, TypeScript and Supabase. SaaS MVPs, dashboards, client portals and internal tools with the AI built in. - Telephony and SMS: Twilio, A2P 10DLC registration and toll-free verification, so your texts actually get delivered. Clients usually hire me when - They want AI in their product or operations and need someone who knows what holds up in production - A voice agent or automation works in the demo but breaks on real calls and real data - A previous developer disappeared or left a mess to clean up How I work Clear scope before we start, updates you won't have to chase, and systems with error handling and logging so they run without me babysitting them. If something won't work, I'll tell you before you pay for it. Send me what you're trying to build and I'll tell you honestly whether I can help and how I'd approach it. Stack AI: OpenAI API, Claude API, LangGraph.js, RAG, pgvector, vLLM, AssemblyAI, prompt engineering Voice AI: Vapi, Retell AI, ElevenLabs, Twilio Automation: n8n, Make, Zapier, GoHighLevel (GHL), HubSpot, Google Workspace Web: Next.js, React, Node.js, Express, TypeScript, Supabase, PostgreSQL, MongoDB, Tailwind CSS E-commerce and CMS: Shopify, Checkout Champ, WordPress, WooCommerce, Framer Telephony and SMS: Twilio, A2P 10DLC, toll-free verification, SMS deliverability Payments and APIs: Stripe, REST APIs, webhooks