Senior Full Stack Engineer - Growth & Monetisation

Self-serve consumers and enterprise seats run through the same billing and activation paths. This role owns the money and the funnel.

Sydney

- Full-time
- In office/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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📌 Senior Full Stack Engineer - Growth & Monetisation (New South Wales)
🏢 NinjaTech AI
📍 New South Wales