Senior Full Stack Engineer - Growth & Monetisation

Sydney * Full\-time * On\-site/hybrid Self\-serve consumers and enterprise seats run through the same billing and activation paths. This role owns the money and the funnel. **What You'll Do** * Build and own monetisation: plans, paywalls, subscriptions, credit and usage metering, auto top\-up, access control and revenue share. * Own onboarding and activation end to end — signup, first task, first genuine result — and the experiments that improve them. * Build the analytics and experimentation foundations: events, funnels, attribution and A/B tests, so decisions come from data rather than opinion. * Work directly with payment providers and their failure modes: declines, webhooks, disputes and platform\-specific quirks. **What We're Looking For** * 3–5\+ years full\-stack with shipped experience in payments, subscriptions or growth surfaces. * TypeScript/React and Python, plus SQL fluency — you can answer your own funnel question. * Comfort owning a metric, not only a backlog.