My name is Kali McLennan, and I am a non-matriculated student in the CUNY Graduate Center. I am passionate about technology, science, and infrastructure. If you have questions about web development, Python programming, or simply want to discuss advanced research computing, clustered infrastructure services, or any topic please get in contact.
I am also a casual photographer with a penchant for LoFi film cameras.
Professionally, I work at the Flatiron Institute, the in-house research arm of The Simons Foundation, a NYC based non-profit focused on advancing research in mathematics and basic science. I am a high performance computing engineer with specializations in parallel storage systems and high performance networking.
This is a link to my Tableau Public profile. It is mostly lab visualizations as part of the DATA 73000 course as well as the workbooks used for the portfolio entries below.
Portfolio
The following are links to visualizations that I have created as part of the Visualization and Design course in Spring 2025 at the Graduate Center.
- 311 Complaint Dataset and Congestion Control
- In this project I utilized the 311 complaint data provided by NYC OpenData to analyze early impacts from the New York City Congestion Control program which went into effect in January 2025.
- Walking Through Time and Space
- This project analyzed my own walking data obtained from Apple HealthKit to present patterns in my walking between 2021 and early 2025.
- Exploring and Visualizing Citibike Data from 2024
- For the final project of the class I developed a HTML and Javascript based exploration frontend for the 45,000,000+ rides recorded by Citibike in 2024. I also created a set of visualizations from this data to explore how riders choose between electric and classic bikes.
Citibike 2024 Data Exploration

Please visit https://users.flatironinstitute.org/~kmclennan to explore the 2024 Citibike ridership dataset.