Romario B.

I help startups and businesses build, fix, and improve mobile apps and the backend systems that power them. I work across Flutter, native Android, backend APIs, databases, integrations, and AI-powered features, so I can handle more of the product without you needing separate developers for every part of the stack. 📱 Mobile App Development * Flutter apps for Android & iOS * Native Android development with Kotlin & Java * New app development and existing app improvements * Bug fixing, maintenance & performance improvements * API and backend integration * Push notifications, authentication & payments * Figma-to-mobile implementation ⚙️ Backend & API Development * REST API development & integration * Laravel backend development * Firebase & Cloud Functions * Supabase & PostgreSQL * Authentication & role-based access * Database and data migrations * Third-party service integrations * Backend debugging & optimization 🤖 AI Integration * Adding AI features to mobile applications * LLM & Gemini API integration * RAG & AI assistants * Computer vision & image analysis * YOLO object detection * Connecting AI models and services to mobile/backend applications I’ve worked on e-commerce apps, ordering platforms, logistics systems, business applications, and AI-powered products, handling everything from mobile interfaces and backend APIs to system migrations and AI integrations. I’ve also worked as a Backend Team Lead and have experience independently taking client projects from requirements through development, debugging, integration, and deployment. Core stack: Flutter • Dart • Kotlin • Java • Express • NestJS• Laravel • PHP • Firebase • Supabase • REST APIs • SQL/PostgreSQL • Python • Gemini/LLM APIs • RAG • YOLO Have a mobile app idea, an existing app that needs work, or a backend/AI feature you need implemented? Send me a message and tell me what you’re trying to build or fix.