Oscar Monroy Téllez · AI Engineer and full stack developer

AI Engineer and full stack developer in Mexico City. I love experimenting with AI and I use the frontend to express creativity. I used to be in the army; today I build agents, automations and AI products.

This is express mode: my whole portfolio on one page.

Enter the 3D workshop Download my CV (Spanish) (PDF)

Station 02 · AI projects

Experiment bench

Conecta Empleo

Award winner · HackathonIA 2026 · UTEL + Hostinger

An employability platform with AI agents: it interviews candidates, assesses their skills and matches them with jobs.

What I did: I designed the technical and AI architecture, built the assessment engine (soft and hard skills) and the matching, and developed the MVP with an agentic workflow.
Built with: Python
TypeScript
Next.js
LLMs
AI agents

See Conecta Empleo (opens in a new tab)

Femur fracture detection

Computer vision

Diagnosis support: it detects proximal femur fractures in X-rays with YOLO and reports the finding, confidence and side.

What I did: I trained the detector and built the whole system: API, roles (admin, doctor, radiologist, technician) and an audit log. It runs 100% locally, no cloud or telemetry, to protect medical data.
Built with: Python 3.12
FastAPI
YOLO
pytest

GitHub repository (opens in a new tab)

Tésera

Real business

I automated a real, profitable business end to end with AI.

What I did: Lead handling, quoting, CRM, operations, quality control and reporting. It started as a hobby and keeps growing every year. I keep tuning the pieces.
Built with: AI agents
Automation
N8N

See Tésera (opens in a new tab)

Leads for a tattoo studio

Automation

A workflow that takes care of the studio’s clients without anyone glued to the phone.

What I did: A complete N8N flow: automatic replies to clients, lead follow-up and the studio’s internal management, with LLMs built in.
Built with: N8N
LLMs

I sold my first freelance project in 2023 and, year after year, projects have kept coming since then. These are just a few. To keep the experience light, and out of confidentiality with several clients, I can't show them all. If you're curious about something specific, write to me and I'll share what I can.

Station 03 · Frontend

Drafting table

The frontend is my favorite way to bring creativity into engineering.

Portafolio de Edd Arrows

A demo site for a tattoo artist in Guadalajara: dark aesthetic, a gallery filtered by style and a three-step brief to quote tattoos.

edd-arrows-portfolio.vercel.app (opens in a new tab)

Sharley Moon

One of my first websites.

omonroyt.github.io/SharleyMoon (opens in a new tab)

This warehouse

My 3D portfolio: three.js, custom shaders for the liquid and glass, a cartoon style with ink outlines, and everything modeled in code.

Enter the 3D workshop

Station 04 · What's next

Idea board

A Spanish-language LLM benchmark

Compare models on real Spanish-language tasks by quality, cost and latency, with a router that picks the best one for each task.

An MCP server

Expose useful data and actions as tools for AI agents.

Voice oral-exam simulator

A voice agent that asks, follows up and grades with a rubric. It will live inside Próximo Grado.

A shelf of creative experiments

Small AI demos in the browser: camera, shaders and weird weekend stuff.

Station 05 · In progress

Construction zone

When they are done, they move up to the experiment bench.

Próximo Grado

In progress

A study app for Army officers preparing for promotion exams.

What I did: AI spaced repetition that decides what to review and when, and organizes the whole study plan.
Built with: AI
Spaced repetition

Coming soon to my GitHub repositories and here in my portfolio, with all the details.

AI second brain

In progress

An Obsidian-style notes app, but with a built-in AI assistant brain.

What I did: The idea is to take what Obsidian started further: connected notes you can query and work on with AI.
Built with: AI
Notes
RAG

Coming soon to my GitHub repositories and here in my portfolio, with all the details.

Station 06 · Track record

Filing cabinet

From soldier to AI Engineer

Over 9 years coding and over 3 doing it professionally.

2026–
AI Engineer · Ventus Technology AI solutions for enterprise platforms, model evaluation and selection, prompt engineering and model routing.
2026
Master's in Software Engineering & Management UTEL, in progress. Microsoft AI Engineer certification.
2025
Full stack bootcamps TripleTen (web) and Generation México (Java).
2023–
Freelance full stack developer First sale in 2023, the same year I graduated as an officer. Since then, projects every year: clinics, tattoo studios and small and medium businesses.
2019–25
Mexican Army Six years: four as a cadet at the Heroico Colegio Militar (Bachelor's in Military Administration) and two as an officer. Leadership and decisions under pressure.
2015–18
Programming technical degree Where it all started.