I build the whole path.

Commercial environmental monitoring — temperature, humidity and barometric pressure with configurable alarms and push notifications. I built every layer of it: the sensor board, the firmware, the broker, the database, both mobile apps, the web dashboard, and the servers it runs on.

• Custom PCB around an ESP32-C3, with OTA firmware updates and an MQTT watchdog
• Two sensor variants selected at compile time — BME280 for ambient, waterproof DS18B20 probe down to −55 °C for freezers
• TimescaleDB hypertables with continuous aggregates and tiered retention: raw 90 days, hourly 2 years, daily forever
• Duration-based alarms that require a condition to persist before firing, so a door opening doesn't page anyone

Hotel maintenance and housekeeping SaaS, running in real properties today. Work orders, preventive maintenance scheduling, room turnover boards and asset tracking — with bidirectional sync into the property management systems hotels already run.

• Live at two operating hotels, syncing room status and reservations in production
• Five PMS connectors behind one generic interface — Cloudbeds, Mews, Guesty, Opera Cloud and Infor, including a SOAP webhook integration against Infor's Liaison Databridge
• Multi-tenant from the ground up: organizations, tenants, plan limits, and three separate admin systems with independent auth
• Equipment photographed and read into structured asset records by the Claude API
• Shipped in English, Spanish and French across web and both mobile apps

A drone services business and the electronics product line underneath it. The site handles client galleries and aerial photo stitching; the hardware is a Remote ID and LTE telemetry board that makes any airframe both FAA-compliant and trackable from a browser.

• Broadcasts FAA Remote ID over BLE to the ASTM F3411 standard, while streaming live position over LTE to a web dashboard
• Laid out to the 30.5 mm Pixhawk mounting pattern with a JST-GH MAVLink connector, so it drops onto existing airframes
• Power design sized for the LTE modem's 2 A transmit peaks — a buck converter for the radio, separate rail for logic
• Client-facing site with photo galleries, uploads and a NodeODM-backed aerial stitcher

An AI command center for everything that lands on you in a day. It reads across email and messages, tracks what each project is actually waiting on, and hands back a daily briefing — with a hard separation between work mode and personal mode.

• Desktop app built and signed for both macOS and Windows on ARM
• Email and iMessage/SMS pulled into one timeline rather than a stack of inboxes
• Kotlin Multiplatform mobile companion for capture on the move

A job-site camera and photo organizer — shoot, sort into albums, and export a set to hand off. Built as a single Kotlin Multiplatform codebase where the shared UI stops exactly where the platforms genuinely differ.

• Custom camera with a zoom ruler, aspect-ratio control, and photo/video modes rather than a system camera hand-off
• Gallery and camera screens split through expect/actual — Android and iOS get separate implementations where insets, image scaling and fullscreen behaviour diverge
• Albums with rename, export and batch delete