Yonie Rivera-AguilarOpen to internships and new-grad roles

Hey, I'm Yonie.

I study Informatics at UW (class of 2027) and build full-stack apps. As IUGA's Director of IT, I built its merch shop, and I ship hackathon projects like FittingRoom.

2,519 contributions in the last year.

IUGA's website, hackathon builds, and side projects, one commit at a time. Each square is a real day on my GitHub.

github.com/Isaiahriveraa
Active days
248
Longest streak
19days
Best day
103on Oct 13

selected work.

IUGA logoInformatics Undergraduate Association (IUGA), UW

IUGA Shop

I wrote 100% of the shop's code and most of the events pages.

The merch store and events pages on iuga.info, the website of the undergraduate student government for UW Informatics.

My part. As IUGA's Director of IT: 249 of the repo's 616 commits, August to October 2026.

Visit site
iuga.info/shop
Built at DubHacks '26

Oct 17-18, 2026 · University of Washington, Seattle

FittingRoom

Shipped a working Chrome extension and its landing site at DubHacks '26.

A Chrome extension that tells you what size to buy on any clothing store.

My part. 21 of the repo's 23 commits are mine: the setup flow, the closet, review-platform extraction, and the landing site.

FittingRoom's popup recommending size S on a store's product pageFrom our DubHacks '26 Devpost demoWatch on Devpost
Visit site
myfittingroom.fit
5th placeDubsTech Datathon 2026

Data Analysis Track · Team 25

Care Gap Risk Assessment

Ranked 76 US demographic subgroups by how strongly cost keeps them from care.

Who is getting blocked from healthcare, and why? We answered with a risk score built from the 2024 National Health Interview Survey.

My part. 25 of the repo's 38 commits are mine: the Next.js site, its chart system, the ranking filters, and the written story. Akshat Ghuge prepared the dataset.

Visit site
care-gap-risk-assessment.netlify.app

Voice automation for macOS

Koda

Runs on-device, on the Mac's Neural Engine, with no round trip to a data center.

Say what you mean in plain English. Koda works out the intent, chains the steps, and runs them in any app on your Mac.

My part. One of the two projects I'm shipping now, alongside Guru.

Visit site
koda-sigma-six.vercel.app

WINFO Hackathon 26, Jan 2026 to now

Guru

15+ views, including dashboards, messaging, and scheduling.

Peer-to-peer tutoring that connects UW student tutors with learners.

Visit site
guruappp.netlify.app
Built at Claude Builder Club Hackathon

Commit

Accountability for remote teams: transparent commitments and deliverable tracking.

Visit site
commitapp.netlify.app

Husky Coding Project, Oct 2024 to 2025

HuskyBids

16+ RESTful endpoints, with balances and odds updated together.

Sports betting with virtual currency, built for UW Husky fans.

Visit site
huskybids.me

about me.

I'm a full-stack developer working mostly in React, Next.js, and TypeScript. I build tools that solve real problems, from peer-to-peer tutoring to voice-native macOS automation.

Director of IT

Informatics Undergraduate Association (IUGA), UW

IUGA is the undergraduate student government for UW Informatics, run by Informatics undergraduates for Informatics undergraduates.

I lead IUGA's IT Committee, which maintains iuga.info so students can find resources and discover events, and supports the iStartup Lab. I built the site's shop and most of its events pages: 249 of its 616 commits.

Sep 2024 - Jun 2027
University of WashingtonB.S. Informatics, class of 2027GPA 3.47
2024 - Present
Software Engineering Career Club (SWECC)Member
2025 - Present
Claude Builder ClubMember