Patrick Gatewood is a Senior Software Engineer specializing in the iOS ecosystem, high-scale enterprise infrastructure, and developer experience. Currently a key architect at Square (Block, Inc.), he focuses on core iOS infrastructure, transaction security, and pioneering AI-assisted engineering workflows for millions of global sellers.

• Square (Block, Inc.): Leading multi-phase hardening of transaction layers, architecting type-safe DSLs for Core Data, and establishing Block's AI-assisted development standards.
• WillowTree, LLC: Architected tvOS support for FOX’s mobile video player SDK and scaled white-label architectures supporting dozens of production apps for brands like PepsiCo, CFA Institute, and Wyndham Hotels.

Founder and solo engineer of an independent software studio focused on well-crafted mobile utilities:

• Constellation Quest: Co-defined and solo-engineered an offline-first scavenger hunt PWA for GRiZ's Seven Stars Festival (~23,500 attendees). Led both product direction and on-site execution (signage, reward mechanics, and interaction flows) for zero-connectivity conditions. Built with Vite, TypeScript, and localStorage; shipped ahead of schedule with zero downtime and became a fan-favorite with organic Reddit engagement. Play here (password: Quest).
• Chosen One: fingerchooser.app - A lightning-fast social utility for game nights. Featured custom haptics and multi-touch tracking.
• Emochi: A system-wide emoji productivity utility for macOS.
• Recipe Nabber: Privacy-focused Safari extension for distraction-free cooking.
• Taipo: Open-source AI-powered shell assistant for command correction.
• Slog: Developer CLI tool for automating iOS Simulator authentication flows.
• Changelog Generator: Automated release documentation tool for high-velocity teams.

• Languages: Swift, Objective-C, TypeScript, Bash.
• Frameworks: SwiftUI, UIKit, Core Data, Combine, ARKit, StoreKit 2.
• Infrastructure: Bazel, XcodeGen, Swift Package Manager (SPM), CI/CD Automation, GitHub Actions.
• Specializations: App Modularization, Performance Instrumentation, AI Agentic Workflows, and White-Label Architecture.

• Website: patrickgatewood.com
• LinkedIn: linkedin.com/in/PatrickGatewood
• Resume: View PDF