Senior Backend Engineer - Billing Platform for AI Search

Tavily

New York (NY)

Hybrid

USD 147,000 - 224,000

Full time

14 days+
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Benefits offered by this job

Health insurance
401(k) plan with match
Parental leave (20 weeks)

Job summary

Tavily is seeking a Senior Software Engineer to build the billing platform behind a novel search engine for agentic AI consumption. This NY-based hybrid role involves turning usage data into accurate invoices and supporting flexible pricing, subscriptions, prepaid balances, and enterprise contracts.

You will own end-to-end billing systems, ensure accuracy, implement revenue safeguards, and push a migration to the next generation with no downtime.

Qualifications

  • 6+ years building production backend systems.
  • 3+ years actively building and operating billing or metering systems in production.
  • Hands-on experience with usage-based / metered billing: rating, aggregation, and proration logic.
  • Hands-on experience with subscription / recurring billing alongside usage-based models.
  • Hands-on experience with prepaid credits / wallet systems and auto top-up mechanics.
  • Hands-on experience with enterprise / contract billing: custom pricing and negotiated terms.
  • End-to-end integration of a third-party billing platform (Stripe Billing, Metronome, Orb, or Zuora).
  • Strong expertise in Python and TypeScript/Node (Go a plus).
  • Production experience with transactional databases (Postgres or equivalent) for financial-grade data.
  • Built high-volume event / usage pipelines into a data warehouse (Kafka or Kinesis → Snowflake or BigQuery).
  • Owned billing correctness in production: reconciliation, idempotency, invoice accuracy.
  • Product-Led Growth (PLG) experience: billing for high-volume, self-serve users.
  • Hands‑on with Auth0, Okta, or similar identity systems in production.
  • Shipped revenue systems under SOX or financial audit constraints.

Responsibilities

  • 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 with no revenue loss or downtime.
  • Define observability and quality metrics for billing correctness, freshness, and throughput.
  • Ensure billing systems meet audit and compliance requirements (SOX, financial audit).

Skills

Python
TypeScript/Node
Go
PostgreSQL
Kafka/Kinesis
Snowflake

Tools

Stripe Billing
Metronome
Orb
Zuora
Auth0
Okta

Job description

Tavily is seeking a Senior Software Engineer to build the billing platform behind a novel search engine for agentic AI consumption. This NY-based hybrid role involves turning usage data into accurate invoices and supporting flexible pricing, subscriptions, prepaid balances, and enterprise contracts.

You will own end-to-end billing systems, ensure accuracy, implement revenue safeguards, and push a migration to the next generation with no downtime.

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