Nathan Sarang-walters
Co-founder & CTO at PrairieLearn, Inc.
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolNathan Sarang-walters is a co-founder and CTO with 12 years of software engineering experience, currently leading technical direction at PrairieLearn while finishing a CS degree at UIUC. He blends backend systems work—especially around autograding and developer tooling—with front-end polish, having contributed to projects from an online learning platform to Android ADB tooling and TypeScript type ecosystems. Previously a senior engineer on frontend infrastructure at NerdWallet and a longtime contributor to The Blue Alliance, he thrives on building developer-friendly systems and shipping pragmatic, testable solutions. Based in San Francisco, he’s an active open-source maintainer who often focuses on improving grading workflows and developer DX—evidence of a pragmatic engineer who prefers building useful tools over writing long bios.
12 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at University of Illinois Urbana-ChampaignRolling Meadows High School
English
Github Skills (38)
javascript10
typesc10
android-adb10
jquery10
bootstrap10
python10
css10
typescript-definitions10
typescript10
type-definition10
type-system10
typescript-types10
html10
nodejs10
bootstra10
Programming languages (25)
Github contributions (5)
PrairieLearn/PrairieLearn
Feb 2017 - Jan 2023
Online problem-driven learning system
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8533 reviews, 1085 commits, 4593 PRs in 5 years 11 months
Contributions summary:Nathan primarily focused on enhancing the functionality of the PrairieLearn system, especially in the area of external autograding. They made improvements to how external autograders work in development mode, including fixing related bugs. In addition, they contributed to the creation of a new element to facilitate file uploads and improvements to the display of assessment results. The changes show a focus on streamlining the grading workflow and enhancing the user interface.
machine-learningproblemassessmentdrivingautograders
the-blue-alliance/the-blue-alliance
Dec 2015 - Mar 2017
A webapp for accessing information about the FIRST Robotics Competition.
Role in this project:Front-end Developer
Front-end DeveloperContributions:37 commits, 44 PRs, 21 pushes in 1 year 3 months
Contributions summary:Nathan primarily contributed to the front-end development of the web application, focusing on UI improvements and feature implementations. They implemented external link behavior, ensuring links open in new tabs. The user also addressed layout issues, fixed styling, added new components, and refactored existing ones, demonstrating a focus on improving the user experience. Furthermore, the user worked on creating interactive components, such as a chat selector and webcast controls, demonstrating front-end expertise.
roboticsfirst-robotics-competitionrobotics-competitionfrcfirstrobotics
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