Backend Engineer with experience building scalable APIs and backend systems using Node.js and NestJS. Currently focused on AI-powered chatbots and automation for customer support and internal tools. I help agencies and teams integrate AI into real backend systems, including LLM integrations, RAG systems with embeddings and vector databases, messaging platforms and automation workflows.
$ git log experience.log
Notimation
Backend Developer - Chatbot Developer
- >Developed and maintained backend APIs using Node.js, NestJS and Express
- >Built and integrated AI-powered chatbots for customer support platforms
- >Worked with Dialogflow CX and LivePerson for conversational flows
- >Designed and implemented RAG systems with embeddings and Pinecone, and integrated LLMs using LangChain (Python and JavaScript) and LangGraph
- >Designed scalable architectures with MongoDB and MySQL
- >Collaborated with product teams to improve chatbot performance and user experience
- >Built Python/Flask APIs to expose AI services to conversational platforms
ICARO
Full Stack Web Development Mentor
- >Mentored students in full stack web development
- >Provided technical guidance in JavaScript, APIs and backend development
- >Reviewed projects and code, promoting best practices
- >Supported students through individual and group sessions
Freelance
IT Support Technician (Freelance)
- >Computer assembly, diagnostics and technical support
$ ls projects/
AI Chat App
Aug 2025 - Present
Web and mobile app capable of generating text, voice, images, and video using AI APIs, with backend orchestrating multiple services and flows
HandsAI - Sign Language App
Apr 2025 - Jun 2025
Application capable of translating sign language from video to text using artificial intelligence, focused on accessibility and visual data processing
NestJS Microservices
2023
Microservices architecture with NestJS, MySQL, and Jest for testing. Scalable backend pattern implementation
Polo IT Accelerator - Backend
Apr 2025 - Sep 2025
REST API built as part of a team project for the Polo IT Accelerator program, featuring NestJS, MongoDB, JWT authentication, Swagger docs, and Docker Compose
Urban Sport E-commerce
Mar 2026
Full-stack e-commerce platform for sportswear with product catalog, shopping cart, checkout flow, user authentication, and admin panel with dark/light theme support
Nest + Next Fullstack App
2024
Fullstack application with NestJS backend, Next.js frontend, Prisma ORM, PostgreSQL database, and Shadcn UI components
Serverless AWS CRUD
2023
Serverless CRUD API using AWS Lambda, Node.js, and DynamoDB with the Serverless Framework
Link Tracker App
2023
URL shortener and click tracking application built with NestJS and PostgreSQL
Chatbot React UI
2023
Real-time chatbot interface built with React, TypeScript, and Socket.io
$ which stack.config
// Backend
// Frontend
// AI / ML
// Databases
// DevOps
// Tools
$ ./packages.sh
# Ready-to-close packages — clear price, timeline and deliverables. Built for SMBs.
WhatsApp AI Chatbot
A virtual assistant that answers your WhatsApp 24/7, qualifies leads and hands off to a human when needed. Built for clinics, real estate, e-commerce and service businesses.
- +WhatsApp Business API integration
- +AI replies (OpenAI or Claude) trained on your content
- +Human handoff + conversation dashboard
- +Deploy + 30 days support included
AI Process Automation
Kill the manual task that's eating your hours. I connect your tools (Sheets, Notion, HubSpot, n8n, Zapier) with AI that decides and executes.
- +1 end-to-end flow (e.g. lead -> CRM -> AI reply)
- +LangChain, OpenAI, Claude integrations
- +Logs + basic monitoring panel
- +Docs + code handover
AI Backend MVP
Idea to product in 3 to 4 weeks. NestJS REST API + auth + LLM integration + deploy. Perfect for validating an idea or launching a SaaS.
- +NestJS REST API with JWT auth
- +1 LLM integration (OpenAI / Claude / Langchain), with optional RAG (vector DB + embeddings)
- +Deploy on Railway or AWS + basic CI
- +Repo + documentation + handover
Custom project
Your idea doesn't fit the packs? Tell me what you need and we'll put together a proposal with fixed scope and price. Backend, AI, automations, integrations, or whatever it takes.
- +Free discovery call (20 min)
- +Proposal with fixed scope, price and timeline
- +Weekly demos + code in your repo from day one
- +Handover + docs + post-delivery support
$ ./faq.md
# Questions I usually get before we start
> Do you charge in local currency or USD?+
Prices are listed in USD to protect both sides from inflation, but Argentine clients can pay in ARS at the official FX rate of the day or MEP USD (we agree on it before starting). Accepted methods: - Argentina: ARS bank transfer, MercadoPago link, or USDT. - International: wire transfer, Wise, Payoneer, or USDT. I issue a C invoice (monotributo) for local clients and an E invoice for international ones.
> How do you invoice?+
I'm a registered monotributista in Argentina. I issue a C invoice for local clients and an E invoice / English invoice for international ones. All legal and deductible.
> What happens if what you deliver doesn't work?+
The project includes revisions until it works as agreed in the proposal. You also get 30 days of post-delivery support for tweaks, bugs and questions. If something critical breaks, I fix it at no extra cost.
> Do you sign NDAs?+
Yes, no problem. If you don't have one, I'll send you a simple mutual NDA in English or Spanish to sign before sharing any sensitive info.
> Do you work with clients outside Argentina?+
Yes — I work with teams across LATAM (Mexico, Colombia, Chile, Uruguay, Peru) and with US/EU clients too. I adapt to your timezone for calls.
> How do we start?+
1. You book a 20-min discovery call (free). 2. We review the problem and check it fits one of the packages. 3. I send a written proposal with scope, fixed price and timeline. 4. If we move forward: 50% upfront, 50% on delivery. We start within 3-5 business days.
$ ./contact.sh
# Let's work together
# Fast reply, no back-and-forth
# Or reach me directly at