Caleb O'Hara

Controls engineer building software that holds up in the real world.

I build practical tools for engineering workflows, then document what works. Most projects sit at the hardware-software boundary and optimize for reliability over hype.

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Focus

Controls + software integration

Current Role

Controls engineering at Siemens

Shipping

Internal tools, prototypes, and writing

Featured Work

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COMPASS Assessment

Behavioral assessment tool that maps natural tendencies across four orientations — Driver, Catalyst, Guardian, and Architect. Client-side only, no data collection.

Deployed as a live, no-login assessment with instant scoring
Kept all responses client-side for a privacy-first user experience

BAU Suite

Project management platform for BAS engineers and commissioning specialists. Tracks devices, IP plans, and daily reports with offline-first storage, optional cloud sync, and a native desktop app via Tauri.

Offline-first architecture keeps all data local — cloud sync is optional, never required
Ships as a web app and a native desktop app (Windows/macOS) via Tauri v2