Cass Petrus
Staff Machine Learning Engineer at Close
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolCass Petrus is a Staff Machine Learning Engineer in Seattle with 11 years of experience turning complex data into deployed software that drives business outcomes. Combining deep ML and NLP expertise with full‑stack engineering, Cass has led teams and productionized models at companies like MailChimp and Textio and now shapes ML at Close. A practical problem-solver, they bridge analytics, email marketing, and operations to deliver scalable, data-driven systems. Their background includes hands‑on work in Sierra Leone with eHealth Africa and Sensi Labs and Peace Corps service, reflecting a global, user-centered perspective that informs product and model design.
10 years of coding experience
14 years of employment as a software developer
New College of FloridaBachelor's Mathematics, Bachelor's Mathematics at Florida Atlantic UniversityMaster's Mathematics, Master's Mathematics at University of Florida
Github Skills (163)
python10
huggingface10
fairness-ml10
cython10
firebase10
in-progress10
statistics10
mobile-application10
nlp10
active-learning10
deploying10
text-classification10
natural-language-processing10
amazon10
transformer-architecture10
Programming languages (11)
Github contributions (5)
mathcass/go-image-cache
Mar 2016 - Apr 2024
Contributions:4 pushes, 2 branches, 4 issues in 8 years 1 month
mathcass/spotify-playlist-maker
May 2015 - Jun 2022
Simple app to make playlists out of a selected artist's related top tracks
Contributions:44 commits, 11 PRs, 22 pushes in 7 years 1 month
reactartistspotifysimple-appmusic
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