Senior Full Stack Engineer - Growth & Monetisation at NinjaTech AI
NinjaTech AI is hiring a Senior Full Stack Engineer - Growth & Monetisation in Sydney, Australia. On-site.
About NinjaTech AI
NinjaTech AI offers an autonomous AI employee platform, SuperNinja, that works 24/7 across a company's tools. The AI agents on the platform perform tasks such as coding, writing, research, and analysis, and execute multi-step workflows on dedicated cloud compute environments. The platform integrates with over 3,000 tools and serves more than 200 companies across industries including oil and gas, manufacturing, and financial services.
Senior Full Stack Engineer - Growth & Monetisation job description
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.
Apply now
Applications go straight to NinjaTech AI. We never sit between you and the employer.
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