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dennys3mf/README.md

👋 Hey! I'm Dennys Marquez

Flutter Developer for Startups & Agencies | 1+ Years Building Scalable, Production-Ready Apps

I turn ideas into polished Flutter apps — fast, clean, and loved by users.

💼 What I Deliver (Results, Not Just Code)

You Need I Build
MVP in 2–3 weeks Clean Flutter + Firebase + Stripe
White-label app for your agency Fully rebrandable, documented, ready to resell
AI-powered features Chatbots, OCR, recommendations (Gemini / OpenAI)
Live tracking & maps Google Maps + Geofencing + Real-time updates
Scalable architecture Clean Architecture + BLoC + CI/CD

🚀 Core Expertise (Proven in Production)

✅ Flutter & Dart

  • Pixel-perfect UI with custom animations
  • iOS & Android from one codebase
  • Performance: 60fps, <100ms cold start

✅ Firebase (Full Stack)

  • Auth (Email, Google, OTP)
  • Firestore + Realtime DB
  • Push Notifications (FCM)
  • Analytics + Crashlytics

✅ Payments & Monetization

  • Stripe, Razorpay, Apple Pay, PayPal, Juspay, Easebuzz
  • In-app purchases & subscriptions
  • AdMob / Facebook Ads

✅ Real-time & Chat

  • GetStream, QuickBlox, Firebase
  • Group chat, typing indicators, message history

✅ Maps & Location

  • Google Maps + Polylines + Clustering
  • Live driver tracking
  • Geofencing triggers

✅ State & Architecture

  • BLoC (Clean) | Riverpod (MVVM) | GetX
  • Modular, testable, maintainable

✅ CI/CD

  • GitHub Actions + Codemagic
  • Automated testing & App Store deployment

🔥 AI & Smart Features (My Edge)

  • OCR + AI Summarization (Health reports, invoices)
  • Smart Chatbots (OpenAI / Gemini)
  • Voice & Image Recognition
  • Personalized Recommendations

🛠 How I Work (Client-First Process)

  1. Free 30-min Discovery Call → Scope & MVP plan
  2. Fixed-price Quote in 24h
  3. Weekly Demos + clean, documented code
  4. App Store / Play Store submission included

🌟 Trusted By (Outside Upwork)

  • Digital Agencies (White-label apps)
  • HealthTech & FinTech Startups
  • E-commerce & Logistics

“Dennys delivered a white-label fitness app in 3 weeks — fully branded, bug-free, and ready to resell.”
— Agency Owner, Arequipa - Peru

📊 GitHub Activity

GitHub Stats

Top Languages

💰 Rates & Availability (New to Upwork – Proven Outside)

Service Rate
Hourly $12–$15/hr (Rising to $25+ after 3 reviews)
MVP (2–3 weeks) $1,200 – $2,500 fixed
White-label App $2,000+

30+ hours/week | <2h response | English / Español
Building my Upwork reputation — same quality, better price

📬 Let’s Build Your App

Next Step: Reply with your idea → I’ll send a free MVP roadmap + quote in 24h

📧 dennys.marquez.dev@gmail.com
💼 LinkedIn
💻 GitHub

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