Core engineering team for TripleDot's Solitaire.com, using AI-first workflows. Built Pyramid variant, aligning game design specs to existing engine conventions and extending its capabilities to handle pair matching mechanics. Architected a unified validator system that all games use to calculate any move-related logic, unifying a system across multiple variants and input surfaces while making adding future games and their validators dead-simple and 100% testable. Implemented features like Daily Challenge and Ad-monetization that required interfacing with Platform and Design to deliver to spec on all fronts. Maintained strict protocol around testing, improving, and maintaining Core Web Vitals, delivering all greens from Google's own diagnostics tool.