01
Mobile
Cross-platform and native mobile applications.
- Flutter
- Dart
- Android
- Java
- Kotlin
- BLoC
I build digital products that feel clear, useful, and human.
I’m Romario, a software developer building thoughtful mobile apps, web products, and the backend systems that power them.
01
About
Curious by nature.
Intentional by design.
I care about the details people notice and the technical decisions they never have to. My work sits where product thinking, visual design, and reliable engineering meet.
I approach each project by asking the right questions first, then building the simplest solution that serves the people using it.
02
Tech stack
Mobile to backend.
One connected stack.
A focused toolkit for building cross-platform apps, responsive web interfaces, reliable APIs, and data-driven products.
02
Backend
APIs, services, authentication, and business logic.
- Express
- NestJS
- Spring Boot
- Laravel
- Node.js
- REST API Design
03
Frontend
Responsive interfaces for modern web products.
- React
- TypeScript
- Angular
- Tailwind CSS
- HTML
- CSS
04
Data & Infrastructure
Storage, deployment, integrations, and developer tooling.
- Docker
- Redis
- PostgreSQL
- MySQL
- MongoDB
- Supabase
- Firebase
03
Selected work
What I like
to build.
A snapshot of the kinds of problems I solve. Detailed case studies are coming next.
Frontend experiences
Responsive interfaces built around clear information architecture, accessible interactions, and thoughtful visual detail.
- UI engineering
- Accessibility
Full-stack products
Useful web products that connect polished interfaces to dependable APIs, data, and business logic.
- APIs
- Product thinking
Design systems
Reusable components and patterns that help teams ship consistently without slowing down.
- Components
- Documentation
Project media
Have a project in mind?
Let’s make something
worth using.
Send a short note about what you’re building, what kind of help you need, or where you want the conversation to start.