Work
Case studies
What the problem was, what I built, and what changed. Written for people who want the engineering detail, not the brochure.
Rebuilding a 60-year-old association's website
A volunteer-run state sports body was running WordPress on a PHP version that had been end-of-life for three years, with half its pages unreachable and every competition result buried in a PDF. I rebuilt it as a static site with a real content model, cut running costs from $283 a year to about $12, and handed the board a CMS they can actually use.
- Running costs cut from $282.69/yr to ~$12/yr
- 395 legacy documents kept at their original URLs, so no existing link broke
- 19 previously unreachable pages brought back into the site
A panic button, an app, and the cloud between them
A BLE-enabled personal safety device where pressing a button has to raise an alarm — reliably, from a coin-cell device, through a phone that may be backgrounded, to a backend that has to notify someone within seconds. I own the firmware, both mobile apps and the serverless infrastructure behind them.
- Shipped on both public app stores
- Firmware, apps and infrastructure under one owner, so the protocol has one author
- REST API that integrates with a wide range of EMS providers
Data over sound, from embedded C++ to the browser
LISNR transmits data as inaudible high-frequency audio. I built the portable C++ SDK that ran it on payment terminals and conference hardware, the low-latency audio stacks on iOS and Android, and then the WebAssembly port that brought the whole thing to a browser tab.
- Ultrasonic audio running in a browser with no plugin or install
- WebAssembly binary reduced by 20% while adding capability
- SDK ported to third-party hardware including payment terminals and conference systems