Uziel Sandoval | Software Engineer & Product Builder

01About

Engineer, builder, curious by default.

What I do, what I am building and what I care about outside of work.

I'm Uziel, a Mexican Software Engineer who loves turning ambitious ideas into real digital products. My work spans backend engineering, mobile development and software architecture, but what excites me most is building experiences people genuinely enjoy using.

I've shipped production APIs for banking, built full-stack tools for a university and tested streaming platforms. Today I'm also founding and leading my own products, SAVI and PAAX Music, end to end.

Outside the IDE I make music as LEiZU, train, swim, drive and game with friends. I believe curiosity is what connects everything I love doing.

Engineering with AI

Since late 2022, with the arrival of ChatGPT, I've been integrating AI into the way I learn, experiment, and build software. Over time, I've learned to work with different AI models and tools to accelerate workflows, explore solutions, and improve development efficiency while maintaining technical ownership of my work: I review the code, the architecture, the tests and every technical decision.

I love understanding how things work. Even more, I love building them.

Personal note

GitHub LinkedIn Instagram Download CV

Full name: Uziel Emmanuel Sandoval Cezate
Location: Mexico City, Mexico
Focus: Backend · Mobile · Architecture
Education: B.Sc. in Computer Science (IPN), in progress
Languages: Spanish (native) · English (B2)

02Experience

Where I have worked.

Four chapters so far: banking backend, a university platform, QA for streaming and technical support. Everything here comes from my résumé.

BBVA

Mar 2025 — Mar 2026Mexico City, Mexico

Software Engineer

BBVA

Backend engineering for the credit domain in core banking: production REST APIs, enterprise integrations and support for releases.

Highlights

Designed and built production APIs for high-value wealth credits and mobile-banking financial flows.
Designed an enterprise API for credit simulation and formalization, integrated with Salesforce applications and business processes.
Contributed to APIs for periodic wholesale-credit compliance processes and enterprise integrations.

Responsibilities

Developed and maintained backend services and REST APIs with Java/APX in production core-banking environments.
Analyzed and validated data flows through database queries, integration tests and production deployment support.
Worked with business areas and agile teams to turn requirements into maintainable, scalable solutions.

Tools & technologies

Java APX REST APIs

Oracle

Maven

Salesforce Integration testing

Photos from this chapter

Skills & stack

Technologies I use for real work, grouped by how deep I've gone with them.

Daily driver

Java
Spring Boot
Flutter
Dart
REST APIs
Git / GitHub

Solid

Python
FastAPI
PostgreSQL
Supabase
Oracle
JavaScript
TypeScript
React
Next.js
Maven
Railway
Cloudflare
Jira
Postman / Bruno
QA & test automation

Exploring

Docker
Kubernetes
AWS / GCP
SAP

03Projects

Things I am building.

Own products and experiments, with honest status. Open a card to try an interactive prototype or read the architecture.

SAVI, PAAX and Ridey open their real frontends, compiled for the web, inside a phone frame. They run with fictitious data and a 10-minute demo session; they are not the production apps.

04Hackathons

Building against the clock.

Prototypes made in a weekend, outside of everyday work.

NASA Space Apps Challenge

A weekend of space data.

I took part in NASA Space Apps. I'm preparing an improved version of the project to share the technical journey, the demo and the documentation here.

Challenge: To be confirmed
Year & team: To be confirmed
Problem: Thousands of confirmed exoplanets exist only as archive rows: hard to explore, compare or picture without inventing data.
Solution: EXOVERSE: an interactive 3D observatory fed by the NASA Exoplanet Archive (pscomppars via TAP), with procedural planets, a system explorer, habitability screening and an HWO-class observability simulator.
Technologies: Next.js, React, TypeScript, Three.js, React Three Fiber, GLSL, Tailwind CSS, Zustand, TanStack Query, Zod
Results: To be confirmed
Learnings: To be confirmed
Gallery: To be confirmed

Challenge name, year, team, results and gallery will be added once confirmed. Nothing here is invented.

NASA SPACE APPS · TO BE CONFIRMED

An interactive break · 05

Stressed?
Take a break.

Code can be fun too. This is Tic-Tac-Toe INFINITE: each player keeps only three pieces, and when you place a fourth your oldest one disappears. Play a friend, or take on my CPU.

Minimax depth 12 + alpha-beta + state memo, verified against a full retrograde solver

An interactive break

A quick match.

Can you beat my AI on Hardcore? Beat it, and your consultation is free.

The CPU plays second with the solved, optimal defense. Only a perfect game beats it.

0You0CPU

Ready when you are.

Transparency: I solved the game by exhaustive search (128,170 reachable states). INFINITE is a first-player win, so Hardcore, which plays second, can be beaten, but only with a perfect 13-move line. It defends optimally and punishes every mistake. The dare is playful: a win must be reproduced with me in person or on a call, and a frontend glitch does not count.

06Beyond code