Industry Experience
Yueran (Hannah) Sun

Develop for Good · PainUSA

Product Manager
Oct 2025 – Feb 2026 · Remote (Seattle, WA)
  • Led a team of five undergraduate students to design and deliver the PainUSA non-profit website, coordinating milestones, delegating technical tasks, and aligning design and client requirements.
  • Guided user interface prototyping in Figma and implementation of the public website in Webflow.
  • Engineered and deployed a Mapbox-based interactive clinician lookup map, leveraging Cloudflare R2 for data storage and hosting, and embedded HubSpot forms for newsletter sign-up.
  • Managed client communication with Stanford Division of Pain Medicine leadership, producing structured handoff documentation to ensure sustainable post-delivery ownership.

Ternary

Software Engineer Intern (Product Delivery)
Jun 2025 – Aug 2025 · Remote (Seattle, WA)
  • Upgraded Ternary’s cloud cost forecasting API by integrating Meta Prophet, enabling automated daily and weekly client spend predictions and improving modeling sophistication beyond the prior linear regression baseline.
  • Improved forecast reliability through time-series cross-validation, hyperparameter tuning, and confidence interval integration.
  • Engineered backend workflows connecting Go and Python services, implementing schema-validation tests and CI pipelines to ensure forecasting accuracy and production stability.
  • Deployed and maintained staging environments on Google Cloud, using Terraform to provision and manage shared resources and support pre-production UI testing.
  • Enhanced the frontend user interface with a rotating slideshow of interactive line charts, visualizing top cost-contributing business dimensions.

University of Michigan · Multidisciplinary Design Program (ProQuest)

Student Developer
Jan 2024 – Dec 2024 · Ann Arbor, MI
  • Automated textual and layout segmentation of historical Detroit Free Press front pages, extracting article-level structure such as titles, bylines, body text, and reading order from JP2 images and OCR data.
  • Developed an MLOps pipeline integrating large language models, Gaussian mixture models, and computer vision for text-type classification, article boundary detection, and noise labeling.
  • Validated segmentation and classification performance through controlled A/B testing, comparing pipeline variants to optimize accuracy, robustness, and processing efficiency.
  • Reduced segmentation cost by 50% compared to manual labeling while increasing throughput to 12 pages per minute.

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Pachira Information Technology (Hengqin) Co., Ltd

NLP Algorithm Intern
May 2024 – Aug 2024 · Zhuhai, China
  • Enhanced the retrieval augmented generation pipeline powering an in-car voice assistant for Toyota vehicles.
  • Developed a new warning-light query handling module and deployed multiple system iterations through vehicle simulator testing.
  • Implemented multi-intent recognition, refusal logic, and query translation components to improve accuracy, safety, and user interaction quality.