Han Z.

software engineer

As an AI Application Development Engineer with 5+ years of hands-on experience, I specialize in building, deploying, and scaling production-ready AI solutions. My core expertise includes developing LLM-powered chatbots, recommendation systems, and computer vision applications using Python, PyTorch, TensorFlow, and LangChain. I’m proficient in the full lifecycle of AI projects, from data preprocessing and model fine-tuning to cloud deployment on AWS/Azure and performance optimization. I enjoy bridging the gap between cutting-edge AI research and practical business needs, turning complex algorithms into user-friendly, high-impact applications.

🇨🇳Nanjing, China$40/hr40% JSSSince Jun 2026

Earnings and projects

MRR

$260$260

Last 6 months ÷ 4.5 months active (since Jun 2026)

#103,729 / 412,022 / 412k

🇨🇳#587 / 2,007 / 2,007

Revenue, last 30 days

$0$0

Last 6 months: $1.2k

Total earnings

$1,185$1.2k

#379,706 / 412,022 / 412k

🇨🇳#1,874 / 2,007 / 2,007

Per project

$593$593

$586 in the last 6 months

#167,300 / 412,022 / 412k

🇨🇳#657 / 2,007 / 2,007

Projects, last 6 months

100% fixed0% hourly

#88,918 / 412,022 / 412k

🇨🇳#535 / 2,007 / 2,007

Projects in all

100% fixed0% hourly

#328,886 / 412,022 / 412k

🇨🇳#1,526 / 2,007 / 2,007

$1.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch

Skill rankings: Top 17% in Java

Ranked by MRR among everyone on Upwork with the skill.

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Han Z.

Earnings and projects

Earnings, last 30 days