Alexander Metzger holding a violin

Greetings! I'm Alex.

Seattle-based computational researcher and open-source enthusiast! Love to talk about board games, machine learning, violin, and graph theory.

Resume Research CV LinkedIn Github Email

Here's what I do.

Check out my Linkedin or read my personal statement for details.

Research

AI for sustainability and Embedded ML at the Ubicomp Lab. Read my research summary for the full story.

Computing Research Association's Outstanding Undergraduate Researcher Award Honorable Mention

Solving Problems

I love building solutions to problems my communities face. Most recently, I founded Koel Labs to help foreign speakers master pronunciation.

Mozilla Builders logo

Having Fun

I play violin with UWSO, build RC planes with Design Build Fly, play tennis and chess, mentor high schoolers, and code up fun projects.

Github Stats

Here's some stuff I made recently.

My goal is to combine computational research, algorithm design, machine learning, and mobile technology to bridge gaps in information access for underserved languages and communities.

Startups

website

Koel Labs Website Github Hugging Face

Nearly half of all foreign speakers struggle with their accent. As Founder and CEO, I've assembled a team of 2 co-founders to make speech pathology accessible. We are working closely with top researchers across the US and Canada to iterate on and publish our results.

Raised 100K USD Founder and CEO PyTorch Speech Research

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website

Attendance Scanner Website Github

A commercial version of an attendance system I made for the Seattle Youth Symphony Orchestras. I co-founded this company with Claire Li. Quickly take attendance using QR codes. Features OAuth2 integration, electronic payments and a powerful admin UI.

500+ Users Co-Founder Backend Engineer Sales Lead
website

Seattle Tutoring Partners Website Github

Co-founded a tutoring company with Claire Li. I've taught 20+ students in K-12 topics and music/violin. I also fascillitate peer-reviewed research opportunities for high schoolers.

20+ Students Co-Founder 3+ Teachers International Research

Publications

k3,3 embedded on a torus

Practical Algorithm for Graph Embedding (PAGE) Web Demo Github arXiv pre-print

Worked with my friend, Austin Ulrigg, to design a novel graph embedding algorithm optimized for cage graphs. The problem lies at the intersection of graph theory, combinatorics, and topology and has applications in network design, chemistry, infrastructure planning, and more.

Algorithm Design Co-First Author SageMath, C, Mathematica Graph Theory

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eKichabi v2 USSD app

eKichabi v2 Video presentation Github ACM SIGCHI Paper

This multi-million-dollar multi-decade study investigates the economic impact of mobile technology in rural Tanzania. As researcher at the ICTD Lab, I led the software engineering and data-analysis teams and worked closely with our collaborators at Cornell, EDI Global, and IRDP.

10,000 Farmers Co-First Author ACM SIGCHI 2024 ICT4D Research
various surfaces folded and glued from polygons

Topological Graph Theory: An Algorithmic Approach Github arXiv pre-print

A visually rich exposition to topological graph theory, graph embedding, and rotation systems culminating in a deeper understanding of the novel Practical Algorithm for Graph Embedding (PAGE) that I co-invented. A brief history of algorithmic developments in the field is outlined.

Topological Graph Theory First Author Honors Thesis Algorithm Design

Talks

presenting on the Mozilla demo day stage

The Future of Language Learning Website Github Talk video recording

We presented our progress developing an MVP for pronunciation learning at Mozilla Builders '24 Demo Day following 12 weeks of intense user validation, machine learning, and HCI research.

Mozilla Builders Keynote Speaker One of 14 among 200 ML for Social Good

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donut shaped printed circuit board

Graph Embedding and Genus Website Github Slides

Presented a non-technical hands-on introduction to graph embedding at the Undergraduate Research Symposium with my co-author Austin Ulrigg.

University of Washington Co-First Author Graph Theory Algorithm Design
pictures of koel labs poster sessions

Building a Language Learning Startup Website Github Slides

Presented our work on Koel Labs at the DubHacks Next Demo Day. We did a poster presentation and were invited to do both a Headline Talk and a pitch to Madrona Venture Group.

DubHacks Next Keynote Speaker Founder and CEO Entrepreneurship
mozilla builders cohort

Local AI for Trustworthy Speech Pathology Website Github

Introduction to my company, Koel Labs, and our plans for pronunciation learning. Presented to the other 13 cohort teams at the Mozilla Builders Accelerator Kickoff Event in New York.

Mozilla Builders ML Engineer Youngest Team Local AI

Community

website

Cascade Enrichment Assessment Software Website Github

As Tech Lead, I led development of customized assessment software to enhance Cascade Enrichment's K-12 tutoring curriculum in collaboration with Claire Li.

Online K-12 Education Tech Lead Used by 100s of Tutors Enterprise Software Engineering

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webapp

SYSO Attendance System Github

My old youth orchestra (SYSO) needed a way to automate taking attendance so I made a system that allows musicians to scan their QR code at a scanning station (any authorized smartphone).

500+ Users Software Engineer Full-stack Enterprise Software Engineering
windows application

Software to measure WiFi RSSI Microsoft Store Github

One of the challenges we faced in Science Olympiad was standardizing the way teams test the WiFi antennas they build. So I created a program with a nice GUI to make this easy.

10,000+ Users Windows Application Operating System APIs Antenna Testing
chrome extension

Automated Cryptography Puzzles Github

This chrome extension enhances toebes.com to allow autogeneration of Cryptographical Puzzles (Code Busters tests for Science Olympiad to help my teammates practice).

10,000+ Users Chrome Extension Automation Cryptography

Libraries and Frameworks

npm cli

SQLite Auto Migrator Github NPM Package

NPM package to automatically manage SQLite database schema changes through a Django-like migration system but framework agnostic and with JavaScript+CLI integration. The library solves the issue of updating a production database schema without losing data or having to manually write/execute SQL queries. Used in production by attendqr.com.

1000s of Installs NPM Package MIT Licensed Automated DB Migrations

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github

HTMS Github

A mini client-side web framework that allows creating webcomponents and managing reactive state with signals directly in HTML.

Joke Library NPM Package JS Framework 🚀 Web APIs

Learning Projects

fancy AI generated QR code

QR Code Art Generator Website Github

Made as an intern at Gooey.AI, this quickly became their top 3 tool with 30K+ uses within the first two weeks and has landed branding deals and social media exposure for the company.

30K+ Users Django URL Shortener Stable Diffusion + Controlnets Docker + Kubernetes

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website

Tierlist Maker Website Github

Simple, advertisement free, 100% local, and privacy friendly tierlist maker.

100s of Users Sharing Functionality Icon APIs Drag & Drop UX
webapp

Tetris Clone Webapp Github

A classic web-based Tetris game with no ads. Can be downloaded and used offline.

100s of Users Online Leaderboard Progressive Web App Touch Controls
webapp

Wurtle Game Webapp Github

A word game inspired by the popular Wordle but with ocean themed background graphics. Coded in collaboration with Claire Li. I coded a similar game on my own where you have to guess the state/country of the absurd law, or in a different mode select the AI generated law.

Cool Animations Online Leaderboard Geolocation + Map APIs PHP
windows game

CPU 3D Rendering Engine Github

3D rendering engine written completely from scratch (down to the drawing of individual pixels) using only the CPU (so no help from the graphics card). This project taught me a lot about the math behind projection matrices, lighting and shadows, 3D transformations, texture mapping, and optimizing algorithms (parallel triangle drawing routines, frustrum culling, etc.).

3D Graphics Space Themed Wumpus Game Full Object File and Texture Support C#
raspberry pi circuit

Conductivity-meter with Raspberry Pi and Python Github

This Science Olympiad challenge involved building and programming a sensor and its circuitry from scratch (using only basic circuit components and DIP) to measure salt concentration in water samples. I used a Raspberry Pi microcontroller to communicate via the I2C protocol to a NAU7802 ADC chip reading a voltage divider circuit. With proper callibration, probe submersion, and luck it is capable of less than 1% measurement error.

Circuit Design Chemistry Sensor Data Analytics Device Driver Development

Contact Me

Reach me via alex@sandergi.com or scan the QR code to add me to your contacts.

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