Mike O'Callaghan, founder of SenseStack, photographed inside a wood-clad sauna

    Founder · Limerick, Ireland

    Building the operational layer for wellness spaces.

    I'm Mike. SenseStack helps sauna and plunge operators know — in real time — when a cabin is actually ready for guests. No more thermometer checks, no more guessing.

    Why I built this

    Every operator I spoke to had the same anxiety: "Is the sauna actually ready?" Staff checking thermometers by hand, guessing if the plunge had recovered between guests. The cost wasn't the hardware — it was the quiet uncertainty before opening, every single day.

    I build systems that remove uncertainty. SenseStack applies the same invisible, dependable infrastructure that powers logistics, payments and energy — to wellness. One device, one dashboard, one answer: Ready, or not yet.

    Background

    Who I am

    15+ years building software and systems — IdeaBubble, CourseCo, and beyond.

    Now focused on real-world environments, not just screens. Hardware, software, and operational insight in a single layer.

    "I build systems that remove uncertainty."

    Traction

    Early but real

    • First pilot round closed. 10 slots open 1 August 2026 (second round)
    • 100% conversion after demo
    • Hardware in production (PCB stage)
    • Second-round installs starting August

    Right now

    What I'm focused on

    • Installing Republic of Ireland pilot sites
    • Validating pricing and packaging
    • Refining the readiness model
    • Solving connectivity (WiFi / 4G)

    Still early. Already working. Moving fast.

    Open to conversations with operators, partners, and early supporters.

    Get in touch