Jonathon Lim

Full-stack Engineer

Portland, OR, US

Javascript

Flutter

JavaScript

Blender

Node.js

XCode

Swift

C++

Firebase

React

Github

TypeScript

Python

FastAPI

Java

Available for hire fromNegotiable

Computer Science Student | Software Engineer (AI, Full-Stack, Mobile) & Systems Programming

Computer Science student and founder/researcher focused on building end-to-end applications and prototypes across AI, healthcare tech, mobile development, and systems programming. Experience translating transformer-based research models into mobile workflows, building an iOS SAT prep app with a Python-to-JSON pipeline, and delivering real-time healthcare triage prototypes at hackathons. Also works on projects spanning NLP, signal processing, game/graphics engineering, and custom memory allocation performance.

Projects

ER Overwatch - 1st Place Overall, QuackHacks 3

○ Collaborated in a 4-person team to deliver a full-stack healthcare prototype in 24 hours at my first hackathon. ○ Built a real-time ER waiting room surveillance and triage platform that helps nurses monitor patient status, detect falls, track remote heart-rate signals, and receive critical alerts from a unified dashboard. ○ Implemented browser-based computer vision workflows for fall detection and patient monitoring, using WebRTC/LiveKit video streams and WebSocket-based alert updates for low-latency nurse notifications.See More

High-Performance Custom Memory Allocator

○ Achieved 10% higher throughput than standard malloc on randomized mixed-size allocation benchmarks. ○ Building a custom malloc/free allocator using memory arenas, size-classed spans, radix-trie page mapping, and bitmap-based free block tracking. ○ Separated allocator metadata from user data to improve cache locality and reduce memory touches during allocation and deallocation.See More

UpTick

○ Collaborated on a full stack web application delivering real time stock summaries and sentiment analysis from news. ○ Implemented NLP-based sentiment extraction and redesigned the frontend experience for clearer market insights.See More

Music Scriber

○ Developing a full-stack application that extracts musical chords from audio input using signal processing techniques. ○ Designed a backend pipeline using Fast Fourier Transform-based analysis to detect chord structures from audio.See More

Grass Renderer

○ Altered unity’s rendering system to create a GPU instanced rendering system to render millions of triangles at a smooth frame rate in a tech demo.See More

Game Project

○ Indie two man team for creating a fast paced game with high quality graphics, animation, 3d models, and textures. Creating many scripts in animation, inverse kinematics, graphics, npc AI, event logic.See More

Work History

Undergraduate Researcher - Purdue University’s Artificial Intelligence in Music

Purdue University○ Collaborating on an 8-person research engineering team to translate LadderSym, an ICLR 2026 transformer-based music performance error detection model, into a Flutter application for iOS and Android. ○ Building mobile workflows that allow musicians to record or upload performances, compare audio against digitized/symbolic scores, and receive structured feedback on practice errors. ○ Integrating the LadderSYM research repository into an application pipeline, including audio preprocessing, model inference, and result visualization for missing, extra, and correct notes.

Founder

Test ReadySep 2024 - Jan 2025 • 5 mos○ Developed and launched an iOS SAT prep app as sole developer, achieving 7,000+ downloads on the App Store. ○ Partnered with Desmos Studio PBC to integrate the official SAT calculator into the application. ○ Integrated a large dataset of standardized test-style questions into the app. ○ Built a Python pipeline to convert 2,000+ PDF-based questions into structured JSON for efficient app integration.

Education

Purdue University

B.S., Computer Science2025 - 2029

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