Full-Stack Developer | Fintech & Marketplace Systems 4+ years building real-world products across fintech, marketplaces, and SaaS. Most developers build what you ask for. I build what your business actually needs. Hey, I’m Celina, I work with founders and teams to turn ideas into fast, scalable, and production-ready web & mobile apps. I don’t just ship features—I think about users, growth, and long-term architecture. 💡 What makes me different I don’t just code—I think like a product partner. I ask the right questions, challenge decisions when needed, and prevent problems before they happen. 🔨 What I can do for you Frontend: React, Next.js (App Router), TypeScript — fast, clean, responsive UIs Mobile: React Native (iOS & Android) Backend: Node.js, Express, NestJS — secure, scalable APIs Databases: PostgreSQL & MongoDB Auth & Security: JWT, OAuth (Google), passkeys Performance & SEO: Core Web Vitals, SSR/SSG, Analytics, Sentry ⚙️ Tech Stack React • Next.js • TypeScript • Node.js • NestJS • PostgreSQL • MongoDB • Tailwind • Zustand • React Query • Docker 🔥 Recent Work Fintech/Real Estate platform (Next.js, OAuth, SEO, analytics) Marketplace platform with advanced search & validation Full-stack apps with documented APIs (Swagger) Financial payout API with secure auth 🧠 Industries Fintech • Real Estate • Marketplaces • Job Platforms • SaaS 📩 Let’s work If you need someone who can think, build, and deliver—let’s talk.…Full-Stack Developer | Fintech & Marketplace Systems 4+ years building real-world products across fintech, marketplaces, and SaaS. Most developers build what you ask for. I build what your business actually needs. Hey, I’m Celina, I work with founders and teams to turn ideas into fast, scalable, and production-ready web & mobile apps. I don’t just ship features—I think about users, growth, and long-term architecture. 💡 What makes me different I don’t just code—I think like a product partner. I ask the right questions, challenge decisions when needed, and prevent problems before they happen. 🔨 What I can do for you Frontend: React, Next.js (App Router), TypeScript — fast, clean, responsive UIs Mobile: React Native (iOS & Android) Backend: Node.js, Express, NestJS — secure, scalable APIs Databases: PostgreSQL & MongoDB Auth & Security: JWT, OAuth (Google), passkeys Performance & SEO: Core Web Vitals, SSR/SSG, Analytics, Sentry ⚙️ Tech Stack React • Next.js • TypeScript • Node.js • NestJS • PostgreSQL • MongoDB • Tailwind • Zustand • React Query • Docker 🔥 Recent Work Fintech/Real Estate platform (Next.js, OAuth, SEO, analytics) Marketplace platform with advanced search & validation Full-stack apps with documented APIs (Swagger) Financial payout API with secure auth 🧠 Industries Fintech • Real Estate • Marketplaces • Job Platforms • SaaS 📩 Let’s work If you need someone who can think, build, and deliver—let’s talk.WWWW…