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Open to freelance projects · Outside business hours

Hi, I'm Franklyn Roberto

I build Android apps with Flutter and Dart.

Flutter/Dart dev

Flutter/Dart Mobile Developer. I turn ideas into production-ready Android apps — from design to release, backed by real backends (Supabase, Firebase, REST APIs).

View projects Download CV
92+
public repositories
5+
years coding
10+
apps & projects

// about

The person behind devfrs

Mobile developer specialized in Flutter/Dart, with a Computer Science degree from UFAL. I build Android apps with clean architecture and real backends (Supabase, Firebase, REST), plus full-stack experience (Java/Spring, Node, React).

Currently a Mobile Developer at NWERP and a Systems Analyst at Grupo Coagro. I love turning interfaces into experiences — motion, detail and performance — and maintain open-source projects. I take on freelance projects outside business hours.

Franklyn Roberto Silva
Franklyn Roberto Silva
Flutter · UI/UX · Mobile
Education
Computer Science — UFAL
Works at
Grupo Coagro
Location
Arapiraca, AL — Brasil
Focus
Flutter · UI/UX · Mobile

// stack

My everyday toolkit

The technologies I use to ship ideas.

Mobile

  • Flutter
  • Dart
  • React Native
  • Java (Android)
  • Kotlin
  • Swift
  • Android Studio

Web & Back-end

  • TypeScript
  • Node.js
  • Docker
  • PostgreSQL
  • Spring Boot
  • JavaScript
  • Oracle
  • Electron
  • MySQL
  • HTML5 & CSS3
  • Tailwind CSS
  • Bootstrap

Tools

  • Supabase
  • Git
  • GitHub
  • VS Code
  • Postman
  • Figma
  • FlutterFlow
  • Xcode
  • Linux

Proficiency

  • FlutterPrimary
  • DartPrimary
  • TypeScriptProficient
  • Node.jsProficient
  • React NativeProficient
  • Java (Android)Proficient
  • SupabaseProficient
  • DockerProficient
  • GitProficient
  • PostgreSQLProficient
  • Spring BootProficient
  • JavaScriptProficient

// journey

Experience & education

  1. Mobile Developer

    Current

    NWERP · Out 2025 - Atualmente

    • Building mobile apps in Flutter/Dart — from design to store release, focused on performance, UX and maintainable code.

  2. Systems Analyst

    Current

    Grupo Coagro · Jul 2024 - Atualmente

    • Building and maintaining internal systems and integrations, automating processes and cutting the team's manual work.

  3. Full-stack Developer

    Plussoft · Jul 2023 - Dez 2023

    • Full-stack development of web systems (front and back-end), delivering features from concept to production.

  4. Systems Analyst

    Open Consult · Jun 2023 - Jul 2023

    • Systems analysis, support and evolution, with continuous improvements and problem-solving.

  5. OOP Teaching Assistant

    UFAL · Set 2022 - Fev 2023

    • Object-Oriented Programming teaching assistant: supported students and graded work, reinforcing OO fundamentals.

// Certifications

Flutter & Dart - The Complete GuideUdemy · 2024
Clean Architecture em FlutterUdemy · 2024
Ignite - React NativeRocketseat · 2023

// projects

Things I've built

A selection — the rest lives on GitHub.

See all on GitHub
Pokedex
★ Featured

Pokedex

Pokédex is a single-page web app that consumes the public PokéAPI to search, browse, and deep-dive into all 1025 Pokémon. Beyond the classic Pokédex, it adds a TCG cards explorer (real trading cards, rarity, and market price), a turn-based team battle mini-game, and a TCG deck builder with analytics and legality checks. The framework-agnostic logic (data services, domain rules, i18n, feature widgets) is shared with the original vanilla build; this branch ports the UI to React 19 + TypeScript (strict). The interface is fully bilingual (PT-BR / EN) — since the PokéAPI has no Portuguese, prose is machine-translated on the fly and cached locally. Ships as an installable PWA with offline support and is deployed on Cloudflare Pages.

ReactTypescriptVite.jsHtml5Css3Supabase
SE
★ Featured

sentimento_app

Mental wellness app (Flutter + Supabase): mood & goal tracking, progress charts, guided breathing and WhatsApp integration. Realtime auth & database.

FlutterDartSupabasePostgreSQL
View case study →
drawer_rail
★ Featured

drawer_rail

Reusable open-source Flutter component: collapsible, themeable navigation drawer/rail with search, sections, badges, expandable groups and flyouts.

FlutterDartPackage
FL
★ Featured

Flutter Web Portfolio

Interactive Flutter Web portfolio with clean architecture, provider pattern, magnetic physics, glassmorphism and holographic 3D cards.

FlutterDartUI/UX
CA

Calculadora Flutter

App mobile de calculadora desenvolvido em Dart/Flutter. Demonstração de gerenciamento de estado e UI responsiva.

FlutterDartAndroidiOS
IM

ImageLite

Fullstack App com Spring Boot, React e Docker. Inclui autenticação JWT, PostgreSQL e upload de imagens.

JavaSpring BootReactDockerPostgreSQL
qrcode

qrcode

A modern, fully client-side React app to generate, customize, and scan QR Codes and barcodes (25+ formats) — plus a dedicated reader that decodes Brazilian NF-e / NFC-e access keys. Live preview, light/dark themes, logo embedding, multi-format export, and a local history. No backend, no sign-up.

React
TC

TCC - Livraria em Nuvem

Aplicação escalável baseada em microsserviços para uma livraria mundial. Foco em alta performance e escalabilidade.

MicroservicesCloudJavaSpring Cloud

// testimonials

What people say

“Franklyn has a deep understanding about Object-oriented Programming!”
Thiago Bruno De Sales
Thiago Bruno De Sales
Senior Mobile Software Engineer · supervised at UFAL

// contact

Let's talk

Got a role, idea or project? Drop a message — I'll reply as soon as I can.

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