About
Engineer by trade. Builder by nature.
I'm Fran Roldán, a software developer and the person behind ROLTEK.
I work as a full-stack developer: I build interfaces with React and TypeScript, and backends and APIs with Java and Spring Boot. I enjoy owning the whole picture, from the data model to the last interaction detail.
I am progressively specializing in native mobile development for iOS and Android, because I believe the best experiences come from respecting each platform.
Why ROLTEK
ROLTEK is my personal engineering brand and the umbrella for the products I build. It is a name that lets the work speak first, and a home for future apps like StepOrbit.
How I work
- 01
Understand before building
Problems first, solutions later. A clear model of the domain saves weeks of code.
- 02
Typed, tested, reviewed
Strict types and meaningful tests make change cheap and refactoring safe.
- 03
Small steps, real feedback
Ship incrementally, measure, and adjust. Real usage beats assumptions.
Stack
Frontend
- React
- TypeScript
- Next.js
- Tailwind CSS
Backend
- Java
- Spring Boot
- REST APIs
Mobile
- Swift
- SwiftUI
- Kotlin