Manuel Ernesto ⚡️

Projects & Engineering Work

A collection of production architectures, AI governance tools, system migrations, and early full-stack projects.

Career Work

Production systems, AI safety layers, design system engines, and high-performance web architecture.

Agentic AI Governance Layer
AI Governance

Built and empirically validated (n=82) an active enforcement engine for AI coding agents. Replaced passive documentation with hook-based runtime gating, achieving 100% compliance in agentic workflows.

TypeScriptNode.jsAST ParsingHook ArchitectureClaude API

Automated Component Migration Engine
DS Migration

Engineered a 15-state machine with 5-factor confidence scoring to automate the migration of 962+ files across 44 asset bundles with ratcheted state enforcement.

TypeScriptNode.jsCLI Tooling5-Factor ScoringGit Automation

High-Performance Transcript Rendering Engine
Performance Engineering

Achieved a 94% reduction in rendering overhead and reduced scripting execution by 57%, bringing Interaction to Next Paint (INP) down from 3,297ms to 112ms.

ReactTypeScriptPerformance ProfilingDOM Optimization

Scalable Radix & Tailwind Component System
Design Systems

Architected a unified design system discipline and created the 'Claude Design Production' pipeline, enabling PMs and designers to prototype and ship production code directly to feature branches.

ReactTypeScriptTailwind CSSRadix UIAstro

Algolia & Next.js Dynamic Page Architecture
Architecture

Architected an automated dynamic page engine leveraging Algolia search indexing, Cloudinary media processing, and custom Next.js API routes.

Next.jsAlgoliaCloudinaryGitLab CIREST APIs

Developer in Training / Personal Work

Early full-stack applications, experimental pet projects, and foundational software built during initial training.

Yamba
Full Stack

A custom client built with Ember.js and an API powered by Ruby on Rails and PostgreSQL. Explored routing, views, custom component interactions, and API action handling.

Ember.jsRuby on RailsPostgreSQL

Sweaters for Turtles
Team Project

Developed as a team project using Express.js, MongoDB, and custom Handlebars templates. Integrated the Stripe API for handling mock ecommerce checkouts.

Node.jsExpress.jsMongoDBHandlebarsStripe API

Back\Log
Pet Project

First full-stack pet project built from scratch. Feature-rich CRUD application leveraging Ruby on Rails REST endpoints and a frontend Handlebars client.

Ruby on RailsPostgreSQLHandlebarsJavaScript

Tic-Tac-Toe Client
First Web App

First frontend web application built during early development training. Features state tracking, API authentication, and dynamic game board rendering.

JavaScriptjQueryAJAXCSS3

Biological Samples CSV API
API Tooling

Built to parse biological sample data from CSV format into JSON responses. Experimented with server-rendered Rails ERB views alongside API endpoints.

Ruby on RailsERBCSV Parsing