My Resume

Email: sarah@slorenzen.com

Phone: 530-925-0846

Location: Bend, OR 97702 – Remote Only

Profile

I use AI ethically and responsibly to solve business problems. I focus on crafting usable, functional products based on data that champion the user – whether I’m fine-tuning LLMs, creating AI Automations, improving usability through design, or building user-friendly and intuitive websites – it’s always been about the user.

Skills

General AI Skills: Prompt Engineering, Prompt Testing, Prompting Research and Evaluation, Inference, Deployment, RAG, Agentic AI

Computer Vision: OpenCV, Hugging Face Diffusers, OCR, Tesseract, PaddleOCR, PDF parsing, PyMuPDF

Language Learning Models: Fine-Tuning, Evaluation, RAG, Transformers – Hugging Face, Langchain, Langgraph, OpenAPI, Vertex AI

Machine Learning: PyTorch, Scikit-learn, Linear Algebra, Deep Learning

Development: HTML, CSS, SASS, Python, Twig, JavaScript, React, SQL, WordPress, Drupal, GitHub, Version Control, CI/CD, Agile development

Data Science: Python, SQL, PostgreSQL, Pandas, NumPy, Matplotlib, Excel, Tableau, Power BI, Hugging Face Datasets

CX, UI, UX Research & Visual Design: Adobe Creative Suite, Sketch, Figma, Wireframes, Prototypes, Mockups, User Testing, Split A/B Testing, Brand Guides, Marketing collateral, Design Automation, Generative AI for Design revisions.

Website Accessibility and Adaptive Design standards of ADA, WCAG 2.1, 2.2 & Section 508

Experience

AI Model Validation Expert – Machine Learning & Mathematics, Handshake — 09/2025 – Present

  • Writing or refining prompts for LLMs to evaluate their responses
  • Evaluating model outputs (choosing the best response, ranking responses, or writing my own)
  • Assessing accuracy, fairness, or domain-specific reasoning

AI Training Data Specialist, iMerit Technology — 08/2025 – 09/2025

  • Accurately generate, annotate, and label diverse datasets following detailed, project-specific guidelines.
  • Review and validate annotations to ensure consistency, accuracy, and alignment with data ethics standards.
  • Collaborate closely with data scientists and machine learning engineers to meet specific dataset requirements.
  • Utilize annotation tools (e.g., Labelbox, Prodigy, etc.) and contribute to refining annotation guidelines and quality control processes.
  • Identify, document, and report data quality issues, edge cases, and unclear scenarios to continuously improve datasets.

RAG & OCR Powered Workflow Automation, Extern, Outamation — 06/2025 – 09/2025

  • Built modular AI-powered pipelines to process 200+ page mortgage blob files – combining OCR (Tesseract, PaddleOCR), PDF parsing (PyMuPDF), and RAG techniques for intelligent data extraction, classification, and search.
  • Developed a document retrieval system using Llamalndex and Retrieval-Augmented Generation (RAG), optimized for multi-document mortgage blobs. Enhanced precision through chunk tuning, metadata filtering, and evaluation of open-source LLMs like Mistral and Phi-2.
  • Conducted end-to-end evaluation of the document intelligence system on 200+ page mortgage blobs-benchmarking OCR accuracy, RAG retrieval quality, and routing performance. Delivered a technical report outlining model trade-offs, optimization strategies, final deployment recommendations, and built a UI for demo purposes.

Drupal 10, 11 Developer Program + Project work, Debug Academy — 02/2025 – 06/2025

  • Focused on modern Drupal 10 & 11 Theme development, Site Building and creating Single Directory Components for the Drupal.TV video directory website.
  • Partnered with development team in rolling out user-friendly mobile first website that increased engagement rate
  • Implemented Drupal AI module to fully integrate with backend and reduce image SEO issues

Lead CX / UX & Accessibility Specialist, Amazon TenMarks Education — 2015 – 2018

  • Product & Curriculum-Inclusive design for a web-based, adaptive K-12 math program that included lesson plans, curriculum, and exercises for 7,000 school districts.
  • Complete identity and asset redesign led to 27% licensed software sales increase
  • Onboarded 7,500 new k-12 users to the learning lms platform post-launch

Instructor & Mentor – UI & UX Design, DesignLab — 2015 – 2017

  • Mentor students online for their Design 101, UX Research & Strategy, and UX Interaction Design courses.
  • Mentored up to 25 students per session. Held 1:1 weekly mentoring sessions remotely.
  • Evaluated competency tasks and capstone projects, giving thoughtful feedback that encouraged growth while acknowledging concept mastery.

Webmaster, Reliant Funding — 2014 – 2015

  • Oversaw the day-to-day management, maintenance, and optimization of the company website, ensuring uptime, security, and optimal user experience across desktop and mobile platforms.
  • Managed website content updates, landing page creation, and site navigation enhancements. Implemented SEO best practices, conducted keyword optimization, and improved site performance metrics, resulting in a measurable increase in organic traffic and engagement.
  • Ensured website compliance with accessibility standards (WCAG), GDPR, and other relevant legal and organizational policies. Maintained and improved internal documentation for website procedures, style guides, and digital asset management.

Education

MS Computer Science – Artificial Intelligence

Southern New Hampshire University

In Progress

Prompt Engineering Bootcamp

Zero to Mastery Academy

2025

BASc in Business Administration

University of Phoenix

2008