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Jacqueline Zhang - Machine Learning Researcher in Illinois, USA

Jacqueline Zhang

Mid-level Machine Learning Engineer specializing in LLMs, fairness, and healthcare ML

iSchool Statistical ML & AI LabUniversity of Illinois Urbana-ChampaignIllinois, USA4 Years ExperienceMid Level

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About

ML/NLP practitioner with a master’s thesis focused on domain-adaptive knowledge distillation for LLMs (LLaMA2/sheared LLaMA), showing improved perplexity and ROUGE-L on biomedical data. Also built real-world data linking and search systems: integrated ClinicalTrials.gov with FAERS using fuzzy matching + embeddings, and delivered an LLM-powered FAQ recommender at Hyperledger using sentence-transformers, FAISS, and fine-tuning to mitigate embedding drift.

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Key Strengths

  • Built domain-adaptive knowledge distillation pipeline for LLMs using Hugging Face/PyTorch/FSDP
  • Demonstrated measurable NLP improvements (reduced domain perplexity, improved ROUGE-L)
  • Designed multi-stage entity resolution workflow across ClinicalTrials.gov and FAERS using fuzzy matching + spaCy
  • Validation strategy combining string similarity, embedding comparison, and targeted manual review with tiered confidence bands
  • Built LLM-powered FAQ recommendation system using sentence-transformer embeddings + FAISS similarity search
  • Addressed embedding drift by fine-tuning on curated QA pairs
  • Production-minded data engineering practices: modular stages, testability, and automated validation checks with logging

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Experience

Machine Learning ResearcheriSchool Statistical ML & AI Lab · Aug 2024 – Present
Software Development EngineerASML · May 2025 – Aug 2025
Software Development EngineerHyperledger · Jun 2024 – Nov 2024
Machine Learning ResearcherInnovative Medical Engineering Lab · Sep 2023 – Apr 2024
Software Development EngineerAmazon · Jun 2023 – Sep 2023
Data ScientistWealthSimple · Jan 2023 – Apr 2023
Research AssistantThe Interflow of Quality Lab · May 2021 – Aug 2022
Teaching: Introduction to Database Concepts and Applications (Fall 2025)University of Illinois Urbana-Champaign · Sep 2025 – Dec 2025part-time

Education

University of Illinois Urbana-Champaignmaster, Bioinformatics (2025)
University of Torontobachelor, Engineering Science (Machine Intelligence Major, Business Minor) (2024)

Awards

  • Undergraduate Student Research Award - Natural Sciences & Engineering Research Council of Canada (NSERC USRA)
  • Albert & Rose Jong Entrance Scholarship

Languages

EnglishMandarin

Publications

2 publications

Large Language ModelsRLHF reward modelingFairness and bias in AIPrompt evaluation and optimization

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Jacqueline ZhangMid-level Machine Learning Engineer specializing in LLMs, fairness, and healthcare ML