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Duong K.
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Duong K.

Full Stack AI Developer | AI SaaS, Automation & MVP Development

👨‍💻 With 10+ years of software development experience, I build production-ready AI and full-stack systems, from MVPs to scalable products used by real users. 👉 Portfolio: ai-research.dev 📌 What I Do - AI Systems & Automation - RAG, LLMs, AI agents, vector search, document intelligence, and workflow automation. 📌 AI SaaS & MVPs - Turn ideas into working products quickly, then improve and scale based on real usage. 📌 Full-Stack Development - Frontend, backend, databases, APIs, integrations, and cloud infrastructure. 📌 Backend & Data Systems - Scalable APIs, data pipelines, multi-tenant systems, background jobs, and third-party integrations. 📌 Tech Stack - AI: OpenAI, Claude, Gemini, Ollama, LangChain, LangGraph, LlamaIndex - Computer Vision: YOLO, RF-DETR, OpenCV, ONNX, TensorRT - Backend: Python/FastAPI, Node.js, NestJS, Express, Laravel - Frontend: React, Next.js - Data: PostgreSQL, MySQL, MongoDB, Redis, Supabase, pgvector, Qdrant, Pinecone - Cloud: AWS, GCP, Cloudflare, Docker, SST - Mobile: React Native, Swift, Kotlin 🚀 If you need someone who understands AI, product development, and the engineering required to ship it to production, let’s talk.

🇻🇳Hanoi, Vietnam$25/hr100% JSS4.85 (16)Since Feb 2019

Earnings and projects

MRR
$248

Last 6 months ÷ 6

World#105,414 / 412k
🇻🇳Country#979 / 3,463
Revenue, last 30 days
$0

Last 6 months: $1.5k

Total earnings
$34k

Billed in all: $35k

World#102,442 / 412k
🇻🇳Country#707 / 3,463
Per project
$1.4k

$1.5k in the last 6 months

World#99,746 / 412k
🇻🇳Country#696 / 3,463
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇻🇳Country#1,284 / 3,463
Projects in all
24

Across 30 contracts

40% fixed60% hourly
World#116,630 / 412k
🇻🇳Country#967 / 3,463

Earnings, last 30 days

$34.6kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$34.0k$34.5k$35.0k$35.5kOct 8Oct 23Nov 7

Skill rankings: Top 17% in Azure Machine Learning

Ranked by MRR among everyone on Upwork with the skill.

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  2. #20OpenAI Embeddings106 freelancers · 🇻🇳 #1Top 19%
  3. #22Azure Machine Learning132 freelancers · 🇻🇳 #1Top 17%
  4. #71Hugging Face300 freelancers · 🇻🇳 #2Top 24%
  5. #318NodeJS Framework1,512 freelancers · 🇻🇳 #11Top 21%
  6. #345PyTorch1,585 freelancers · 🇻🇳 #6Top 22%
  7. #388Vector Database1,142 freelancers · 🇻🇳 #2Top 34%
  8. #588Deep Learning2,743 freelancers · 🇻🇳 #6Top 21%