Cass Wilkinson Saldaña Data librarian + educator + open source developer

About me

Portrait of Cass in Treman State Park

Happy and giant waterfall-adjacent

My goal is to help learners, researchers, and communities engage meaningfully (and critically) with data.

In 2011, I served in AmeriCorps at the lovely & bustling Rondo Community Outreach Library in Saint Paul, Minnesota. I spent my time at the Rondo teaching adult learners from diverse backrounds how to use computers from the ground-up: double-clicking, browsing Wikipedia, and (eventually!) entering functions into Excel.

Over the last eight years, I have grown my fondness for digital instruction into a deep engagement with data science. My fous today is to craft insight from messy, heterogenous data, while always putting everyday folks and their needs at the center of my work.

As the Data Instructional Specialist II at the Children's Hospital of Philadelphia, I specialize in teaching methods of finding & interpreting data. My techniques of choice include exploring semi-structured and unstructured data, introducing learners to the Python and R data science ecosystems, writing data narratives using visualization packages and Jupyter Notebook, and helping researchers understand machine learning algorithms better. I also work collaboratively to plan workshops, build digital resource portals, and host community events.

And as a data scientist and technical writer, I investigate messy, heterogenous data directly using machine learning techniques. As I experiment and grow technically, I help others do the same by writing essays and tutorials.

Key methodologies:

Natural language processing; data visualization; machine learning; deep learning; technical writing; web application development; mixed methods research

Key technical skills:

Languages: Python, R, SQL, Ruby, JavaScript, HTML/CSS, Java

Packages: pandas, tidyverse, seaborn, bokeh, d3.js, scikit-learn, TensorFlow, sqlite3, keras, Spark, django, flask

Software: Tableau, Adobe Creative Suite


I'm into other stuff too!

Outside of work I love writing, pinball, zines, hikes, cats, speculative fiction, making games, playing pick-up basketbll, and riding trains. I lived in Tokyo for half a year. I would love to moonlight as a pinball mechanic someday.

Work history


2019 - Now Data Instructional Specialist @ Children's Hospital of Philadelphia
2018 - 2019 Social Science and Geospatial Data Librarian @ Cornell University
2016 - 2019 Programmer/Analyst (Consultant) & Data Visualization Intern @ University of Michigan
2015 - 2016 Academic Technology Assistant @ City University of Seattle