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Posted 07 August, 2026

Senior Full Stack Engineer - Growth & Monetisation

NinjaTech AI
Sydney, NSW, Australia Full Time
Reference: 490_714375_443d5d5f-57e8-4c2a-b322-6bd1402438e2

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.

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