Pfizer logoCurrently an Extern @Pfizer
Rachael Sheeter portrait

Prototype builder for AI document workflows

I design and ship prototypes that extract insight from PDFs using OCR, LLMs, and RAG, demonstrated in a Pfizer externship.

🟢 Open to work

Work samples

Portfolio includes a Pfizer externship prototype: an AI-powered document intelligence system that automated enterprise PDF tasks using OCR, LLMs, and RAG.

  • Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship
    Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship
    Pfizer logo

    Pfizer · ✅ Verified by Extern · ⏱️ In progress

    Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

    Prototype AI-powered document intelligence with Pfizer—using OCR, LLMs, and RAG to automate real enterprise PDF workflows and build a standout portfolio project.

    AI & MLPythonDocument IntelligencePresentation Skills

About me

I design and ship prototypes that extract insight from PDFs using OCR, LLMs, and RAG, demonstrated in a Pfizer externship.

I build prototype AI tools that turn enterprise documents into searchable, structured data. I completed a Pfizer externship where I used OCR, large language models, and retrieval-augmented generation to automate PDF workflows and create a portfolio-ready prototype. I'm early in my career and exploring directions that blend applied ML and product-focused engineering.

Externships

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

Pfizer

Experience

Product Management & Design

Freelance · Jun 2025

Operations Associate (Product Analyst)

Napier Park Global Capital · Oct 2022 - May 2025

Associate

Bowery Valuation · Apr 2021 - Sep 2022

Tax Consultant (Analyst)

Deloitte · Aug 2019 - Jun 2020

Education

Georgetown University

B.S.F.S., Global Business · Class of 2019

Designlab

UX Academy · Class of 2025

Skills

OCR-based document processingLarge language models (LLMs)Retrieval-augmented generation (RAG)Prototype developmentEnterprise PDF workflow automation

✅ Verified by Extern · ⏱️ In progress

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

Prototype AI-powered document intelligence with Pfizer—using OCR, LLMs, and RAG to automate real enterprise PDF workflows and build a standout portfolio project.

AI & MLPythonDocument IntelligencePresentation Skills

Overview

The work prototyped AI-powered document-intelligence workflows for enterprise PDFs, combining OCR, LLMs, and RAG. The project reviewed model architectures, mapped information-extraction steps, and documented technical components and integration choices. The deliverables explained LLM tokenization, Transformer self-attention, pretraining, and fine-tuning for pharmaceutical documents.

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

What I've accomplished

I produced a technical explanation of how LLMs tokenize text, apply Transformer self-attention to model context, predict next tokens, and how pretraining and task-specific fine-tuning operate for pharmaceutical documents.

Project breakdown

I explained how LLMs tokenized text, used Transformer self-attention to model context, and predicted next tokens. I described pretraining on large unlabeled corpora and subsequent fine-tuning on smaller task-specific datasets.

View all works