Gerard Ziemski // halfmarble cofounder & ceo
I am not building for a market. I am building for a race. Whether it's hardware to stabilize a trembling hand or software to track the science behind cellular repair — these are the mechanics of survival.
A high-stability SMD soldering aid designed to dampen tremors. Born from the need to keep tinkering when biology tries to stop it. Open-source because community is the only way forward.
Mimicking infusion pump stability using oral medication timing. Half-life math predicts blood concentration curves in real-time — your phone becomes the dosing brain that smooths the peaks and valleys. The Bridge: PK validates what you can feel (ON/OFF states), building trust for the autophagy states you can’t.
A technical solution for a biological war. This isn’t a lifestyle app; it’s a specialized fasting engine grounded in the latest autophagy research. The science is the engine — we just built the dashboard.
"My wife and I are building this because I need it. Halfmarble is not a startup. It's a fight."
A nurse and a programmer. We built this. Just us.
Honors bachelor's degree in software engineering from Western University in 1998, plus two years of grad school I never finished. Twenty-five years writing software. New Media Lab. Apple. Sun Microsystems. Oracle. Two patents along the way. Early open source contributor to gl4java and jogl — Java bindings for OpenGL — back when Java on the desktop still felt like the future.
Born in Poland. Educated in Canada. Cut my teeth in Silicon Valley. Now building halfmarble from Charlottesville, Virginia.
Off the clock: hiking, kayaking, and the company of dogs.
Nursing education and training in the United States. Fourteen years as a nurse. Most of them caring for geriatric patients — the population hit hardest by chronic disease, medication complexity, and the day-to-day reality of living with conditions that don't get better. Known to my employer and co-workers as a fierce patient advocate.
Born and raised in Ukraine. Volunteer as an English-to-Russian interpreter for immigration cases. Now building halfmarble from Charlottesville, Virginia.
Off the clock: cooking healthy meals for my family, hiking, and kayaking.