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NinjaTech AI · Sydney, New South Wales, Australia

Senior Full Stack Engineer - Growth & Monetisation

Hybridseniorfull timePosted 8 days ago
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Stack mentioned

a/b-testingwebhookstypescriptreactpythonsql

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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