James Toohey

CTO, software developer, and product builder across finance and health.

I lead engineering as CTO at PerformID, build independent products, contribute to open source, and run a health business.

Cairns & Sydney, Australia

Explore portfolio View experience Contact

Featured Work

All projects

  • Of The Year

    iOS App

    An iOS app for tracking and rating experiences, designed around simplicity and privacy.

  • CSPrefabricate

    Open Source Library

    A TypeScript library for generating valid Content Security Policies with less friction: directive validation, TLD expansion, baseline CSP presets, and warnings for insecure or incomplete configurations.

  • Longevity Metrics

    Founder

    A data-driven physiological testing business in Cairns delivering VO2 max, lactate threshold, and metabolic testing supported by software-led thinking.

  • PigmentJS

    Open Source Library

    A zero-dependency colour library for web developers to create, convert, and manipulate palettes with clean APIs for complements, triads, monochromes, shades, tints, and accessibility-friendly text contrast.