Leonardo Siusystems + backend

I build systems behind
real products
from backend to interfaces.

Currently building backend, full-stack, and applied AI/ML systems as a Computer Science student at UC Irvine. Previously shipped production features and end-to-end products accross APIs, data pipelines, and full-stack apps. Interested in infrastructure, distributed systems, and computer vision.

Open to new roles
Incoming Summer 2026???
2023 - PresentComputer Science @ UCI

Selected Works

01 — 03
Human Proximity

Human Proximity

building beeseye, a mobile app for real-time networking in events.
designed and implemented the backend and AI service architecture, from the API layer and AI microservices to the core product functionality.

Backend • APIs • AI Systems • Microservices • Mobile App
RetiNova

RetiNova

won best-overall @ IrvineHacks 2025, a 36-hour hackathon.
co-built a healthcare-focused AI application for detecting eye conditions, owning core system integration from model inference to a user-facing product.

Applied ML • Computer Vision • Healthcare • Full-Stack • Hackathon
Meta 1B

Meta AI Studio (BTT)

engineered an NLP system to detect bias in large-scale social data.
built and fine-tuned transformer-based models spanning large-scale data preprocessing, BERT fine-tuning, and a deployed inference pipeline.

NLP • Applied AI • Data Pipelines • Model Deployment • ML Systems

Creative Bridge

Balancing system architecture withvisual expression

VIEW GALLERY
Golden Gate Bridge
Creation of Technology
Self Portrait
LEOSTWIN • in active development

A conversational interface
to who I am.

LeosTwin is a digital twin trained on my projects, writing, and experiences. Ask about my work, how I think about systems and products, or what I'm building toward. Responses reflect how I reason, not just what I've done.