Eduardo Sebastián Sánchez Torres

Full Stack Software Engineer

I build software that stays useful long after the last line of code is written.

I work daily with

PHP
Laravel
JavaScript
TypeScript
React
Astro
PostgreSQL
MySQL

Work

Selected work.

A short selection. Each project framed as a case study: the problem, the technical decision and the outcome.

2026

FinanceOS MX API

Enterprise-grade REST API for managing personal finances in the Mexican financial ecosystem: accounts, cards, transactions, budgets, loans and investments in a single API.

Problem In Mexico a person’s financial life is scattered across banks, fintechs, SOFIPOs and wallets, each with its own app and format: there is no single place to check what you have, what you owe or what you spent.
- Java
- Spring Boot
- PostgreSQL
- Maven
View process
2026

KuxCal

Free, accurate and easy-to-use financial calculators for investments, CETES, loans and savings in Mexico.
- Astro
- TypeScript
View process
2026

SalonDiEliss

Linktree-style site for a beauty salon: a lightweight, responsive landing focused on turning visits into WhatsApp appointments.
- Astro
- TypeScript
View process

View all projects

Profile

Engineering with judgment, not just code.

I'm Eduardo, a Network and Software Engineer focused on the backend, with more than four years designing applications, ERP systems, REST and SOAP APIs and integrations where stability and reliability are requirements, not nice-to-haves.

I learned early that writing code is only part of the job. The hard part begins when that code has to be maintained for years, grow with the product and stay clear for whoever reads it next. So I stopped asking only "does it work?" and started asking whether it is maintainable, whether it scales and whether it solves the right problem.

Backend & architecture

That is why I especially enjoy the backend and software architecture.
Context before code

With that perspective I learned to look at software development from a broader angle.
Simplicity

I also discovered that simplicity is one of the hardest qualities to achieve.

Read the full essay

Experience

My journey.

More than four years building software that companies and users rely on every day.

2022 — Present

Backend PHP Developer

Siipan México
- Contributing to the development, maintenance and evolution of the ERP used to manage orders, production, inventory and supplier communication.
- Collaborating on operational support, external system integration and improvement of critical processes to ensure business continuity.
2021 — 2022

Junior Full-Stack Developer

MiEmpeño
- Contributing to a full-stack platform for managing products, customers and the internal operations of a pawnshop.
2021 — Present

Freelance Full-Stack Developer
- Building web solutions for independent clients and personal projects, taking part in every stage of the software lifecycle: analysis, design, development, deployment and maintenance.