From Handyman Calls to MoldSentrix

Every product has an origin story. Ours starts not in a lab or a startup accelerator, but inside the walls of ordinary Tampa Bay homes — on repair calls that kept revealing the same hidden problem.

A Repair Business With a Pattern

In 2022, my husband Dmitry and I immigrated to the United States and settled in the Tampa Bay area of Florida. We founded Goldenhandsman LLC — a home repair and handyman services company. The work took us inside hundreds of residential properties: kitchens, bathrooms, closets, attics, crawl spaces.

And a pattern emerged. Behind the drywall we opened, under the flooring we replaced, around the AC ducts we serviced — again and again we found the same thing: hidden mold, and the quiet, cumulative effects of uncontrolled humidity.

The homeowners were almost never careless people. They simply had no way of knowing. Florida's humidity does its work invisibly, inside structures, and by the time anything becomes visible, the damage is already done.

The Engineering Itch

This is where my background refused to stay quiet. Before Florida, I spent six years studying engineering programming and environmental systems at the International Sakharov State Ecological University in Minsk — a degree that combines ecology with applied information technology. Later, I worked as a software developer on a real-time IoT communication platform deployed at public venues across the Greater Toronto Area.

Ecology and code. Sensors and analysis. When you've spent years thinking in those terms, you can't look at a moldy closet wall and see bad luck. You see a process — one that obeys physics and could have been measured, predicted, and interrupted.

Mold growth follows measurable conditions: sustained humidity, temperature, and organic material. Two of those are always present in a Florida home. The only variable you can monitor and control in real time is humidity.

That insight became MoldSentrix.

Building the First System

We started the way engineers do: with real hardware in a real house. Temperature and humidity sensors in the highest-risk zones, readings flowing in every few minutes, and analysis that looked not at single numbers but at trends — how close surfaces sit to the dew point, how long humidity persists above risk thresholds, how each specific room behaves with its own ventilation and AC schedule.

It quickly became clear that raw data alone wasn't the product. A homeowner doesn't need a chart saying "78% relative humidity." They need a message that says: this closet has held risky humidity for three days — ventilate it or run a dehumidifier, and here's why it matters. So we built the service around interpretation: continuous monitoring plus analysis that understands the home, delivered as simple alerts straight to your phone.

Our first installations are now running in residential properties and church environments across the Tampa Bay area — and Dmitry, who has personally opened more mold-damaged walls than anyone should, handles every installation himself.

Where We're Going

I'm currently pursuing Florida DBPR Mold Assessor certification to formalize the environmental side of this work. Our goal is to grow MoldSentrix into a scalable preventive monitoring service for high-humidity regions across the United States — starting here in Florida, where the need is greatest.

We've seen what mold does to homes and families when nobody is watching. We built the thing that watches.