Senior Software Engineer (Agentic Search) - Billing

### About Tavily

We're building the infrastructure layer for agentic web interaction at scale. Our API is designed from the ground up to power Retrieval-Augmented Generation (RAG) and real-time reasoning in AI systems. By connecting LLMs to high-quality, trustworthy web content, we help developers build agents that are not only intelligent — but also informed.

We work with some of the most innovative teams in AI — from small startups shaping the ecosystem to the largest enterprises deploying AI at scale. Whether it's powering sales assistants, research copilots, or internal knowledge tools, we're the missing link between LLMs and the real world.

The Role

We are looking for a Senior Software Engineer to design and build the billing platform behind a novel search engine tailored for agentic AI consumption. This role is based in our New York office, hybrid with the NYC team.

Our APIs are used by millions of developers and the AI agents acting on their behalf, all paying based on what they consume. You will own the systems that turn product usage into accurate, trustworthy revenue, supporting flexible billing models—usage-based pricing, subscriptions, prepaid balances with auto top-up, and enterprise contracts. Correctness is non-negotiable: every event must be measured precisely and every invoice must be right to the cent.

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In this position, your responsibility will be to

• Design and operate the billing platform end to end, from usage events to invoices
• Build metering and usage-aggregation pipelines that turn high-volume events into billable amounts
• Design and operate prepaid credit/wallet systems with auto top-up and balance management
• Support enterprise/contract billing with custom pricing, negotiated terms, and scheduled invoicing
• Build reconciliation, idempotency, and invoice-accuracy safeguards to ensure revenue data is always correct
• Lead the migration to the next generation of our billing system wit...