Daniel
Villera

1. Nov 2025 – Present

   Unozero.ai

   Co-Founder · Remote

   • Built a conversational booking engine on advanced RAG (Gemini, LangGraph, Qdrant) that handles booking CRUD and cut the sales team’s operational load by 75%.
   • Led the frontend refactor in Next.js and TypeScript: faster loads and a cleaner UI/UX in the flows that matter most.
   • Automated lead classification with AI. The agents qualify potential customers and complete the booking, closing the sale without human intervention.

   Next.js · TypeScript · LangGraph · Gemini · Qdrant

2. Mar 2023 – Feb 2024

   Softpymes

   Software Engineer · Cali, Colombia

   • Built interactive modules for “Pedidos+”, a B2B2C e-commerce platform, with Angular and Azure, so end customers complete purchases faster.
   • Turned business requirements into working features with the backend team, consuming RESTful APIs.

   Angular · Azure · REST APIs

1. 2,600 m

   BoxBox

   A Formula 1 race predictor, end to end. An XGBoost model, validated race by race and retrained after every Grand Prix, gives each driver a win and podium chance, with a SHAP breakdown of why. A FastAPI backend serves it to a bilingual Next.js dashboard.

   Visit project ↗
   Python · XGBoost · FastAPI · Next.js · PostgreSQL2026
2. 2,300 m

   Otro Lunes

   A Next.js app that turns seven answers into a meal plan and a training routine for every day you train, written by an AI model (Gemini or OpenAI, your choice). The model call runs in a Route Handler and the plan stays in your browser, so there are no accounts and no database.

   Visit project ↗
   Next.js · TypeScript · React · Zod · Gemini · OpenAI2023

• Oct 30, 2026

  Serverless is not only on demand. It forces you to be stateless

  The theory sells serverless as pay-per-use. In practice the bigger change is that your app scales horizontally whether you plan for it or not.

• Oct 27, 2026

  An AI plan with no accounts and no database

  How Otro Lunes turns seven answers into a meal plan and a training routine, and why the plan never leaves your browser.

• Oct 24, 2026

  Why BoxBox retrains after every Grand Prix

  A win chance without a reason is hard to trust. How BoxBox validates, retrains and explains each prediction.

All posts

About

Full-stack developer focused on AI systems (RAG, agents, LLMs) and business intelligence. I work in TypeScript (Next.js, Angular) and Python (FastAPI, LangGraph).

I model data in PostgreSQL and PowerBI and deploy it to the cloud, to automate operations and take friction out of the workflow.

• Frontend and UI

  TypeScript, JavaScript, Next.js and Angular.

• Backend and AI

  Python, FastAPI, LangChain, LangGraph, Vercel AI SDK and Qdrant.

• Data and cloud

  PostgreSQL, Supabase, PowerBI, Azure, AWS, GCP, Git and Docker.