Open to opportunities

Sebastian User

@sebastianuser4

Message

I build production-grade full-stack platforms, mobile apps, and APIs that solve real operational problems.

Mexico

Message

What I'm looking for

I'm looking to build production software that solves real user problems, with opportunities to own features end to end, collaborate in Agile teams, and keep growing across full-stack and mobile engineering.

I've built end-to-end software for Via Diseño, including an academic enrollment platform that automated group generation, integrated real-time administrative data, and served hundreds of students. I also improved usability for non-technical staff through structured testing and was recognized at Expo Ingenierías among the year's best engineering projects.

I'm building SOS, a lost-pet platform with AI reverse image search, subscription systems, CI/CD, and Clean Architecture. Across Android, fintech, and simulation projects, I've delivered with React, Node.js, Kotlin, PostgreSQL, MongoDB, and C++, while leading Agile teams and taking product ownership from requirements through rollout.

Experience

Work history, roles, and key accomplishments

Full Stack Software Engineer

Via Diseño

Feb 2025 - Dec 2025 (10 months)

Sole engineer on an end-to-end academic enrollment platform, automating group generation logic and eliminating manual processing errors. Drove UX improvements through usability testing and integrated bidirectional REST APIs for real-time data sync.

Express PostgreSQL MVC REST APIs UX Usability Testing