Senior Billing Systems Engineer for AI Search Platform

Nebius Group; New York (NY); Hybrid; USD 147,000 - 224,000; Full time

Benefits offered by this job

Health insurance (US)

401(k) plan

Parental leave

Remote work reimbursement

Disability & life insurance

Job summary

Tavily, part of Nebius Group, is seeking a Senior Software Engineer to design and operate the billing platform behind a novel AI-powered search engine. This hybrid New York role focuses on usage-based pricing, subscriptions, and prepaid balances, with exact invoicing and revenue modeling at the core.

You will own end-to-end processes from usage events to invoices, build metering pipelines, support enterprise contracts, and implement audits and observability to ensure accuracy and compliance in a

Qualifications

• 6+ years building production backend systems.
• 3+ years actively building and operating billing or metering systems in production.
• Experience with usage-based billing: rating, aggregation, and proration.
• Experience with subscription/recurring billing alongside usage-based models.
• Experience with prepaid credits/wallet systems and auto top-up mechanics.
• Experience with enterprise/contract billing: custom pricing and negotiated terms.
• End-to-end integration of third-party billing platforms (Stripe Billing, Metronome, Orb, Zuora).
• Strong expertise in Python and TypeScript/Node.
• Production experience with PostgreSQL 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.
• Auth0/Okta 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 credits/wallet systems with auto top-up and balance management.
• Support enterprise/contract billing with custom pricing and negotiated terms.
• Build reconciliation, idempotency, and invoice-accuracy safeguards.
• 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

Backend systems

Billing systems

Python

TypeScript/Node

PostgreSQL

Kafka

Stripe Billing

Metronome/Orb

Zuora

Auth0/Okta

Tools

Stripe Billing

Metronome

Orb

Zuora

Okta

Auth0

Snowflake

Kafka

Kinesis

Job description

Tavily, part of Nebius Group, is seeking a Senior Software Engineer to design and operate the billing platform behind a novel AI-powered search engine. This hybrid New York role focuses on usage-based pricing, subscriptions, and prepaid balances, with exact invoicing and revenue modeling at the core.

You will own end-to-end processes from usage events to invoices, build metering pipelines, support enterprise contracts, and implement audits and observability to ensure accuracy and compliance in a