Payments Engineer

Role overview Build reliable payment capabilities for purchases that begin in an AI agent conversation. You’ll connect conversational checkout to payment providers and order services, ensuring that catalog prices, payment notifications, refunds, and order states remain accurate and secure.

Responsibilities - Create payment flows that let customers start checkout within an agent conversation. - Integrate payment providers, including payment notifications and refund handling. - Ensure order prices come from the product catalog rather than conversational responses. - Handle declined payments, repeated notifications, and invalid webhook signatures safely. - Test end-to-end payment scenarios in a provider’s test environment and document resulting order states.

Requirements - Experience integrating payment providers such as Stripe. - Strong backend development skills and understanding of idempotency. - Knowledge of webhook security and order state management. - Careful testing practices, including verification of successful, failed, repeated, and refunded transactions. - Relevant backgrounds include payments or billing, e-commerce backend development, or fintech engineering.

Benefits and work setup Remote contract engagement with flexible hours. Compensation starts at $4,500 per month. Freelancers and solo agencies may continue serving their own clients.