Oscar Valdez

About Me

Junior Full-Stack Developer with a Mechatronics Engineering background and hands-on MERN experience. Completed a remote internship at iTransition building production-style web applications. Self-taught, fast learner, and comfortable working in agile teams. Previously spent 6 years designing IoT and embedded systems — that hardware background helps me think holistically about software architecture and integrations.

Languages

Spanish

Native

English

Upper Intermediate (B2 IELTS)

Experience

iTransition Company

Software Developer Intern

2024 | Remote
- Built a MERN web application during a structured training program
- Applied best practices: routing, state management, reusable components
- Collaborated in an agile remote team with effective communication
Skytrol

Development Engineer

2016 – 2022 | Tehuacán, México
- Led technical development of custom automation and monitoring systems
- Built web interfaces and integrated REST/MQTT APIs with IoT platforms (ThingsBoard)
- Produced technical documentation, field testing, and client deployment support
- Designed and developed IoT solutions for automation, monitoring, and remote control
- Developed firmware for ESP32 and Arduino using MQTT, TCP/IP, UDP, GSM, WiFi and Bluetooth
- Integrated with IoT platforms and external services via APIs and automated bots
- Developed and deployed solutions for agricultural monitoring, security, and vehicle systems
- Created technical documentation, conducted field testing, and provided client support

Featured Project

Mis Finanzas — Personal Finance Dashboard

Full-stack personal finance app with authentication, transaction tracking, budgets, savings goals, and analytics. React + TypeScript frontend connected to an Express API with PostgreSQL.

User auth with JWT, email verification, and password recovery
CRUD for accounts, income/expenses, budgets, and savings goals
Summary dashboard with charts (Recharts) and filterable transaction tables
PDF report export and form validation with Zod + react-hook-form

Live Demo Frontend Backend

React TypeScript Vite Tailwind TanStack Table Recharts Zod Express PostgreSQL Drizzle ORM JWT

Other Projects

iTranForms

React
MySQL
Tailwind
SQLite
Express

fakeData

React
Express
Tailwind

La Barber Corp

Astro
Tailwind

Skills

Frontend

HTML5 CSS3 JavaScript (ES6+) TypeScript React Angular Astro Tailwind CSS

Backend

Node.js Express.js REST APIs Zod Validations

Databases

MongoDB MySQL SQLite PostgreSQL Mongoose Drizzle ORM

Tools

Git GitHub Postman Vite Netlify Render Vercel

Background

IoT Basics Arduino/ESP32

Education

Instituto Tecnológico de Tehuacán

Mechatronics Engineering

2010 – 2015

Degree completed

Self-directed Learning

Full Stack Web Development (MERN)

2024+

Personal & internship projects

Instituto Tecnológico de Educación Continua – CTEC

Full Stack Web Development

2026

JavaScript/TypeScript ecosystem

Full-Stack Developer