Senior Fullstack SaaS Developer | Next.js, Supabase & React Native Specialist

My name is Clariana Abreu, and I am a Top Rated Plus Software Engineer. Before transitioning to software engineering, I served for three years in the Brazilian Navy as a Computer Network Technician. This experience forged the extreme discipline, accountability, and zero-tolerance for failure that I apply to building resilient SaaS architectures today.

I specialize in building production-ready SaaS MVPs and scaling complex platforms. I focus on Next.js, Supabase, and React Native, delivering clean code that drives revenue.

• Current Lead: Lead Engineer for Beepr, spearheading a critical migration from Capacitor to a high-performance React Native (Expo Bare Workflow) architecture.
• Global Impact: Lead Developer for HappyKids.ai (Luxembourg), recognized as a Global Top 30 AI Social Impact product.
• SaaS Expert: Specialized in multi-tenant architectures, Real-Time Database (Supabase/PostgreSQL), and complex financial integrations (Stripe).
• AI Integration: Expert in implementing AI-driven workflows, RAG, and semantic search using pgvector.

Technical Audit & Native Transition of a Real-Time Notification Ecosystem.

• Native Migration: Moving from a "WebView Gap" architecture to React Native to enable persistent background Geofencing and Push Notifications.
• Edge Computing: Managing 50+ Deno Edge Functions for mission-critical business logic (auth, recommendations, queue processing).
• Optimization: Migrating logic to PostGIS/PostgreSQL for instantaneous spatial data retrieval and POS readiness.

Lead Developer for an AI-powered educational platform.

• Recognition: Part of the team that reached the Global Top 30 AI Social Impact ranking.
• Architecture: Built a scalable, trilingual interface with a focus on high accessibility and emotional learning tools.
• Fullstack Execution: Orchestrated microservices using Node.js and Django, ensuring a robust backend for sensitive educational data.

A high-performance SaaS for automated scheduling and AI-driven support.

• AI-Powered: Floating chat assistant with semantic memory using pgvector for context-aware responses.
• Financials: Full Stripe integration for real-time payment processing and subscription management.

• Upwork: Work with me
• LinkedIn: Clariana Abreu