Mario Jimenez Illesca
Full-stack software engineer building production-ready applications, frontend systems, and data-heavy product interfaces.
Interested in product engineering, AI workflows, and fintech tools with real-world users and operational depth.
Featured Systems
These are my strongest current systems projects: work that combines product thinking, technical architecture, and real-world workflows.
Multi-Agent Investment Research System
A 12-agent research workflow that used disagreement, verification, and critique loops to make financial analysis more reliable.
SwiPR / PRs on Edge
Two hackathon iterations of an AI PR-review system: one focused on repo memory/retrieval, the other on adaptive generative UI.
GatorLend
A campus marketplace exploring how student asset exchange can evolve toward verifiable ownership and transfer systems.
Skills
TypeScript/JavaScript, React/Next.js, Firebase/Firestore, Python, Java, C++, Git, AI prototyping, dashboard-style product interfaces.
Projects
Broader shipped work, open-source contributions, and earlier projects that still show range across product, UI, and engineering foundations.
goalsforme.com
Production goal-planning app that turns goals into structured projects, tasks, habits, and progress tracking.
Dayton Financial RFQ Tool
Internal quoting platform that replaced spreadsheet workflows with a real-time, multi-user dashboard.
TravelClaim AI
Hackathon prototype for agentic travel reimbursement: RAG policy answers, form autofill, and receipt validation.
Crecelux — Multi-Product Landing Page & Book Interface Prototype
Next.js/MUI frontend prototype combining a responsive multi-product landing page with a reader-friendly Books by Jorge content interface.
Arcade Cabinet — Marin Horizon School
Full-size plywood arcade cabinet built as a semester capstone. Runs custom Pygame games written by middle school students and classic NES titles on a Raspberry Pi Zero 2 W.
Plotly.py contribution
Open-source Plotly.py contribution focused on fixing labeled vertical lines by moving annotation logic toward shape.label.
Nutrition Tracker
Nutrition dashboard integrating USDA data with macro tracking and visual progress views.
UCSD Data Structures
Java data structures projects covering tries, linked lists, autocomplete, testing, and performance.
Blog
June 16, 2026
Building an Arcade Cabinet at Marin Horizon School
How a semester of teaching Scratch and p5.js ended with students playing games they wrote on a hand-built plywood arcade cabinet.
April 5, 2026
How Five AI Agents Disagreed, and Why That Was the Point
Why multi-agent disagreement improves research when every conflict gets resolved through verification against primary sources.
May 9, 2026
PRs on Edge
Building a generative PR review interface that adapts to queue size, contributor patterns, and repository risk.
May 2026
GatorLend / BlackRock conference reflection
Reflection on presenting GatorLend at BlackRock and why tokenized ownership systems matter in real financial workflows.
January 20, 2026
Plotly.py contribution article
How I debugged Plotly.py’s labeled vertical-line crash on datetime axes and refactored the path toward shape.label.
Experience
Software Developer (Contract) — Dayton Financial (April 2025 – June 2025)
- Designed and deployed a production-ready quoting platform replacing spreadsheet-based workflows
- Built real-time dashboards, role-based access, and collaborative spreadsheet-style interfaces under tight delivery timelines
- Stack: Next.js, TypeScript, React, Firebase, TanStack Table
Software Intern — Boyd Lighting (June 2025 – August 2025)
- Built internal web tools to upload, organize, and manage large datasets with authenticated access for internal teams
- Collaborated with engineers on documentation, code review, and tooling improvements; supported testing and deployment
Coding Teacher — Marin Horizon Middle School (September 2025 – Present)
- Taught JavaScript (p5.js) and Scratch to middle schoolers with no prior coding experience; iterated curriculum based on direct student feedback
- Led semester capstone: designed and built a full-size arcade cabinet (Raspberry Pi Zero 2 W, Pygame, NES emulator, hand-soldered GPIO controls, plywood cabinet) delivered to the school at end of semester
- Students wrote original Pygame games that ran on the final machine alongside classic NES titles
Tutor — Computer Science, Mathematics & Statistics (2023 – Present)
- Tutored undergraduates and high-schoolers in Python, statistics, and algorithms
Intern — University of California, Merced (July 2024 – August 2024)
- Built Python-based data visualizations and educational tools using real-world scientific datasets through the CalTeach program
- Worked on research-oriented technical material with an education focus