by Marco

Case Studies

Selected work showing the problem, the product decision, the system behind it, and what shipped.

Featured work

Featured case studies

The clearest examples of product judgment, systems thinking, and engineering execution working together.

Ecommerce · Experimentation4 min read

How a Simpler Mini-Cart Generated $25M in Annualized Revenue

How simplifying one high-intent ecommerce interaction generated $25 million in annualized incremental revenue.

March 15, 2025View Case Study

Enterprise Systems5 min read

Turning Tribal Knowledge Into a CMS Engineering Could Build

A working CMS prototype transformed undocumented attribute rules into an engineering-ready system.

February 10, 2025View Case Study

AI-Native Product4 min read

Afterword: Designing a Voice-First Journal

A visual case study of a voice-first journal designed and engineered from product thesis through native iOS implementation.

June 15, 2026View Case Study

AI Tools7 min read

Human, Actually

How I designed and built a production AI application coach that establishes what is true before generating anything.

April 6, 2026View Case Study

Additional build stories

Design systems, mentorship, games, and technical explorations that show the broader range of the work.

Design Systems9 min read

Designing a Public Design System With AI

How I turned the visual language of AI-Created into a public design system, with AI accelerating the work and human judgment keeping it coherent.

March 30, 2026View Case Study

Mentorship8 min read

From Designer to Builder

How I coached a talented designer from AI prototypes to independently building real products — a church website, a mobile app, payments, and a secured backend.

July 13, 2026View Case Study

Interactive Systems13 min read

I Ported My JavaScript Game to the Super Nintendo in Three Days

Deadfall began as a Phaser browser game dressed up like a 16-bit console title. In three days, with Claude Code and PVSnesLib, it became a real SNES ROM.

June 7, 2026View Case Study

Interactive Systems12 min read

Inventing a New Arcade Mechanic

Arcade game built around a new rotating defense mechanic using Phaser and custom shaders.

November 20, 2024View Case Study

Interactive Systems12 min read

Building a Full Arcade Shooter With AI

A full-featured arcade shooter built with Three.js, WebGPU, AI coding tools, procedural environments, layered weapon systems, bosses, and CRT-era visual flair.

March 5, 2026View Case Study