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Liu C.
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Liu C.

Diffusion & LLM Engineer | Computer Vision, Fine-tuning | PhD, USTC

I'm Chang Liu, a Ph.D. graduate from the University of Science and Technology of China (USTC, ranked 51st worldwide in THE 2026 and 59th in U.S. News 2027), specializing in computer vision, diffusion models, and large language models, with 10+ peer-reviewed publications (AAAI, ICCV, ECCV, ACL, IEEE TIP/TMM). I bridge the gap between research and robust engineering: I help startups and research labs build reliable deep learning systems and publish top-tier papers. The "Deep Expertise" Guarantee: In an era where AI coding agents make writing code easy, the true bottleneck in deep learning deployment is domain-specific alignment. When you hire me, you work directly with a published Ph.D. expert who knows exactly how to preprocess your in-domain data, which encoder fits your task, and what pipeline satisfies both your performance and novelty needs. Every line of code is reviewed against your data and your goal—no unverified AI-generated code, no copy-pasted projects. Just precise modeling tailored to your exact task. ◆ Why Work With Me? ▪ Ph.D.-trained researcher from USTC with 10+ authored publications (AAAI, ICCV, ECCV, ACL, IEEE TIP/TMM). ▪ Earned 2.2k+ total GitHub stars across open-source generative AI and vision repositories (@AlonzoLeeeooo). ▪ Authored 600+ professional blogs on frontier AI, gaining 30,000+ likes on Zhihu and 13,000+ followers across major Chinese platforms (@叫我Alonzo就好了). ▪ Hands-on experience helping multiple startups deploy specialized AI-powered solutions since 2024. ▪ Privately guided 10+ clients to successful publications in NeurIPS, CVPR, ACL, and EMNLP. ◆ How Can I Support Your Project? > Deep Learning Implementation & Problem Solving ▪ Architecture & Alignment: Turning your ideas into technical specs and robust, deployable code. ▪ End-to-End Execution: Running experiment iterations around your business goals across: - Generative AI & Diffusion Models: Text-to-X generation, image/video editing, and 3D tasks. - Computer Vision Pipelines: Segmentation, detection, image processing, and restoration. - NLP & LLM-Related Tasks: Text classification, RAG systems, LLM reasoning, and specialized applications like radiology report generation. > Academic Mentoring ▪ Literature Review & Positioning: Surveying your research direction to find gaps and sharpen your positioning. ▪ Innovation & Experimentation: Designing technical novelty and rigorous experiments that validate your hypotheses. ▪ Writing & Polishing: Shaping a compelling scientific narrative around your novelty, with professional-grade polishing and formatting. ▪ Manuscript Reviewing: Thorough, constructive review comments before you submit. ▪ Top-Tier Rebuttals: Strategic responses to tough reviewer feedback, and polished rebuttal letters for AAAI, NeurIPS, EMNLP, ACL, and TIP. ◆ Have a Project or Research Idea in Mind? Every project or mentorship I take on gets my full technical and academic attention. If you have a project in mind—or a research paper that needs rescuing—send me your topic, current stage, and target outcome. I'm always happy to help. ◆ Where to Learn More about Me? > Profiles & Technical Content: ▪ GitHub: @AlonzoLeeeooo (2.2k+ stars). ▪ Technical Blogs: @叫我Alonzo就好了 across Chinese media platforms (Zhihu, WeChat Official Accounts, Xiaohongshu). ▪ Google Scholar: Chang Liu, USTC (450+ citations). ▪ Portfolio: See below for selected project case studies.

🇨🇳Hefei, China$48/hr100% JSS4.98 (6)Since Apr 2024

Earnings and projects

MRR
$293

Last 6 months ÷ 6

World#99,305 / 412k
🇨🇳Country#553 / 2,007
Revenue, last 30 days
$700

Last 6 months: $1.8k

World#53,658 / 412k
🇨🇳Country#281 / 2,007
Total earnings
$4.5k
World#262,969 / 412k
🇨🇳Country#1,164 / 2,007
Per project
$504

$439 in the last 6 months

World#181,884 / 412k
🇨🇳Country#746 / 2,007
Projects, last 6 months
4

Across 5 contracts

100% fixed0% hourly
World#51,813 / 412k
🇨🇳Country#322 / 2,007
Projects in all
9

Across 14 contracts

93% fixed7% hourly
World#212,268 / 412k
🇨🇳Country#968 / 2,007

Earnings, last 30 days

$4.5k+$700 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$3.5k$4.0k$4.5k$5.0kOct 8Oct 23Nov 7

Skill rankings: Top 14% in Academic Writing

Ranked by MRR among everyone on Upwork with the skill.

  1. #6Diffusion Model18 freelancers · 🇨🇳 #1Top 33%
  2. #75Medical Imaging262 freelancers · 🇨🇳 #1Top 29%
  3. #211Academic Proofreading1,150 freelancers · 🇨🇳 #1Top 18%
  4. #327PyTorch1,585 freelancers · 🇨🇳 #5Top 21%
  5. #483Academic Writing3,347 freelancers · 🇨🇳 #2Top 14%
  6. #552Deep Learning2,743 freelancers · 🇨🇳 #7Top 20%
  7. #603Computer Vision2,498 freelancers · 🇨🇳 #9Top 24%
  8. #898Large Language Model2,726 freelancers · 🇨🇳 #6Top 33%