AI Automation Engineer · Open to remote roles

I build AI systems that run in production.

AI agents, n8n workflows and full products, from database to deploy. A WhatsApp sales agent on Meta's official API, a 300+ node content engine and a paid learning platform with real students. I do the job by hand until it produces a number, then I build the system that does it.

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Case studies

Running a business? I also build websites, WhatsApp automation and AI chatbots. See services

Work running in production

Systems in use today by real people. The private ones are recreated in code; the public ones load live right here.

Animated recreation

AI agent · Sales

WhatsApp sales agent

Qualifies leads, answers questions, sends the payment link and confirms the enrollment by itself. Hands the chat to a human when it should.

  • 53-node workflow
  • 87 real conversations distilled
  • Payment to enrollment, automatic

n8n · OpenAI · WhatsApp Cloud API · Supabase · Stripe

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SaaS · EdTech

Gringos Academy platform

English learning app with 68 lessons, 10 interactive AI tools, an adaptive level engine and Stripe billing. Paid closed beta with real students.

  • 37 tables with RLS
  • 22 APIs
  • 171 badges, unlocked on the server

Next.js · TypeScript · Supabase · Stripe · OpenAI

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Automation · n8n

AI learning content engine

One n8n workflow behind one webhook serves all 10 tools of the app. When a student runs out of new exercises, it writes more, has them checked and saves only what passes.

  • 300+ nodes
  • 10 tools, 1 webhook
  • 7 tools with a self-growing bank

n8n · OpenAI · ElevenLabs · Supabase

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guia.gringosacademy.comLive
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AI · RAG · Live

Ireland guide with an AI chat

A paid digital guide for people moving to Ireland, with a chat that answers questions from the book itself (RAG). Paywall, magic link login and Stripe.

  • 35 chapters
  • RAG chat over the book
  • English version and audio

Next.js · OpenAI RAG · Supabase Auth · Stripe

Open live site
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Real-time voice AI

SpeakUp, live voice conversation

Students practice real situations by talking to an AI character that answers out loud, in real time. Each character speaks with its own voice. The final feedback can be spoken in any cloned voice; today it uses the teacher's.

  • 24 scenarios in 4 categories
  • One voice per character
  • API key never reaches the browser

Gemini Live · WebSocket · Node.js · Docker

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Animated recreation

The arc · Growth to automation

From manual to agent

I wrote every script by hand until the method produced numbers. Then I turned the method into an AI agent that writes them.

  • 42,298 organic followers
  • One video past 700k views
  • 100 posts analyzed via the Meta API

Content strategy · Social SEO · OpenAI Custom GPT · Meta Graph API

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balezipratas.com.brLive
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Client · E-commerce

Balêzi Pratas

Silver jewelry storefront for a non-technical client: own mini CMS, image pipeline, WhatsApp checkout, domain and business email.

  • 253 pages live
  • Scope of 20 pieces, delivered with 100

Astro · Tailwind · Supabase · Cloudflare

Open live site
gringosacademy.com/fundadorLive
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Sales page · Funnel

Founding-member sales page

The sales page of the school's app on gringosacademy.com: video pitch, founding plan and Stripe checkout. A paid checkout activates the student's plan automatically through an idempotent webhook.

  • Live Stripe checkout
  • Payment activates the plan

Next.js · Stripe · Supabase · Vercel

Open live site

What I build for businesses

Each service is designed to turn visits into real customers.

01

Professional website

Fast, mobile-first, with technical SEO built in (metadata, structured data, clean URLs). Your online presence ready in 48 to 72 hours.

Next.jsTailwind CSSTechnical SEOMobile-first
02

WhatsApp automation

Auto-replies, lead capture and follow-up without any manual effort.

WhatsApp APIn8nLead captureAuto follow-up
03

AI chatbot

Your business answers 24/7. The chatbot answers questions, books appointments and qualifies leads.

OpenAITrained for your business24/7
04

Google Business

Full setup of your business profile on Google and Google Maps: details, photos, hours and reviews.

Google MapsBusiness profileReview management

How it works

From zero to your business online in less than a week.

01

Free audit

I review your current online presence and identify the 3 biggest opportunities.

02

Clear proposal

You get a concrete plan with a fixed price. No surprises, no hidden costs.

03

I build everything

I deliver the website and automations in 48 to 72 hours.

04

Launch & support

I handle everything so you can focus on your business.

Service packages

Fixed price. No surprises. No hourly billing.

Starter

Everything you need to get online.

€650
  • 5-page website
  • Google Business
  • WhatsApp Business setup
  • Delivery in 72h
Request a quote
Most popular

Growth

Automate and capture leads while you sleep.

€1,200
  • Everything in Starter
  • WhatsApp automation
  • Online booking
  • Lead capture
  • Delivery in 72h
Request a quote

Full Digital

Your complete digital business, ready to scale.

€2,000
  • Everything in Growth
  • Trained AI chatbot
  • Auto follow-up
  • Analytics dashboard
  • 2 months support
Request a quote

Monthly

Your digital partner, month after month.

€120 to €180/mo
  • Hosting + domain
  • Updates
  • Automation management
  • Priority support
Request a quote
Mauro Miranda

Hi, I'm Mauro

AI Automation Engineer based in Spain. I spent years doing growth, content and sales by hand, and now I build the systems that do that work: agents, workflows and full products. For businesses, I bring the same approach at the right size.

Trilingual

I work in Spanish, English and Portuguese. Language is never a barrier.

Fast delivery

Your website online in 48 to 72 hours. Not weeks, not months.

Full-stack

Design, development, automation and AI: all in one person.

Fixed price

No hourly billing. You know exactly what you pay from the start.

Contact

Let's talk

Hiring for AI automation, or need a system for your business? Message me on WhatsApp or send an email. I reply in English, Portuguese or Spanish.

Send WhatsApp now
or send an emailmirandamauro93@gmail.com