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Quan D.

Quan D.

Full-Stack Developer | AI, Mobile & Web Expertise

Imagine an app that learns with every user interaction, proactively adapts to individual needs, and delivers a truly tailored experience—no matter the device. That’s the transformative potential of AI-enhanced cross-platform solutions I create. I’m a full-stack mobile developer specializing in integrating artificial intelligence to build smart, user-centric applications for iOS, Android, and the web. My mission is to turn your vision into innovative digital products that feel both intuitive and intelligent. What I Bring to Your Project: 🧠 AI-Driven Features: From image recognition and speech processing (computer vision & NLP) to dynamic recommendations and advanced analytics, I leverage frameworks like TensorFlow, Core ML, PyTorch, ML Kit, and custom APIs to deliver real intelligence. 📱 Versatile Mobile Development: Cross-platform apps with seamless, native-level performance using Flutter, React Native, or native Swift/Kotlin—ensuring your app delights users everywhere. 🌐 Scalable Web & Backend Solutions: Expert in Node.js, Express, Django, Python, GraphQL/REST API design, real-time WebSocket data, and cloud hosting on AWS, Google Cloud, or Azure. 🎨 Beautiful UI & UX: I design clean, modern, and intuitive interfaces, collaborating in Figma to translate ideas into polished, user-friendly screens. 🚀 Reliable Performance & Scalability: I implement code-splitting, lazy loading, robust offline support, and Docker-based CI/CD pipelines for smooth scaling and near-zero downtime. 🔒 Strong Security & Compliance: From OAuth2.0 and JWT authentication to end-to-end encryption and GDPR/CCPA compliance, your data privacy and trust are top priorities. My Process: Discovery & Planning: I work closely with you to understand goals, map user flows, and identify valuable AI opportunities. Prototype & MVP: I deliver interactive prototypes or MVP apps rapidly, enabling early feedback and agile iteration. Agile Development: Transparent, milestone-driven sprints ensure steady progress and open communication. Launch & Optimize: I handle deployment to app stores and web, followed by monitoring, analytics, and continuous optimization as your product grows. Whether you need an intelligent in-app assistant, tailored content feeds, or real-time data visualization, I help you harness AI to deliver exceptional value. Let’s collaborate to make your mobile or web app as smart as it is seamless! Ready to level up your app with AI? Let’s chat about your project today!

🇨🇳Jiujiang, China$35/hr90% JSSSince Jul 2025

Earnings and projects

MRR
$638

Last 6 months ÷ 6

World#67,699 / 412k
🇨🇳Country#358 / 2,007
Revenue, last 30 days
$341

Last 6 months: $3.8k

World#71,823 / 412k
🇨🇳Country#386 / 2,007
Total earnings
$36k

Billed in all: $38k

World#97,998 / 412k
🇨🇳Country#373 / 2,007
Per project
$36k

$3.8k in the last 6 months

World#1,990 / 412k
🇨🇳Country#16 / 2,007
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇨🇳Country#730 / 2,007
Projects in all
1

Across 2 contracts

0% fixed100% hourly
World#360,671 / 412k
🇨🇳Country#1,713 / 2,007

Earnings, last 30 days

$37.5k+$341 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$37.2k$37.4k$37.6kOct 8Oct 23Nov 7

Skill rankings: Top 13% in Java

Ranked by MRR among everyone on Upwork with the skill.

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  5. #710Android4,975 freelancers · 🇨🇳 #4Top 14%
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  8. #1,362Docker8,761 freelancers · 🇨🇳 #11Top 16%