Applied systems engineer building products across native software, AI models, hardware, and infrastructure.
I build systems that work outside the demo — native apps, on-device inference, camera and BLE hardware, training pipelines, and the services that connect them. Each starts with a product or hardware capability and grows the layers needed to ship it.
The repos are the artifacts; the lab notebooks are the wars — one debugging war per entry.
Sensing & interfaces rppg-vitalsigns · Open-Alterego · cosmos-framework 📓 The ANE lab — bending Apple's undocumented Neural Engine: shape laws, int8, the eval-cost ledger, embedding and cardio models on the engine — the research behind rppg-vitalsigns.
Hardware & edge labs BluetoothHID · ESP32-S3 Camera Firmware · Pi BLE Keyboard · Self-classifying edge devices — EdaxShifu 📓 A7 iOS 12.5.x — a junked iPad mini 2 turned self-hosting lab: Chimera jailbreak, kernel RE, an on-device ObjC/Rust toolchain — birthplace of the resident agent that types, watches its own screen, and studies its own deaths.
Agents & the fleet xcode-mcp · structured-prompts 📓 Agents: the mind loop — the resident agent's mortality architecture: the curiosity engine, watchdog tripwires, the obituary file, a mind in one gigabyte — and the fleet that watches the loop. 📓 Developer-space patterns — the habits the wars run on: ordinal-layer architecture, how a number gets to be true, and reading macOS metrics the OS stopped giving you.
Products 📓 Products — the lab ships outward: the agent's keyless web search + fetch toolkit built on the Mac's own headless Chrome, and gauge, the macOS monitor the fleet runs. CleanShots — privacy-focused iOS media processing: metadata removal, watermarking, fail-closed visual masking CaringMind — an AI companion and audio journal for personal advocacy, augmentation, and reflection SleepLoops — a sleep-cycle utility built around 90-minute timing and practical wake-time planning
All three apps ship through one pipeline I own: implementation, signing, CI, TestFlight, App Store Connect automation, post-release iteration.
Larger systems live in private monorepos; older experiments get folded into archives. The index of indexes holds the thread maps and the ecosystem census of which repos feed which series.
Ship end-to-end. Verify on real systems. Extract what becomes reusable.