Senior Software Engineer (Agentic Search) - Billing
About The Position
Nebius is seeking a Senior Software Engineer to design and build the billing platform for a novel search engine tailored for agentic AI consumption. This role is based in their New York office, with a hybrid work arrangement. The APIs are used by millions of developers and AI agents, all paying based on consumption. The engineer will own the systems that convert product usage into accurate revenue, supporting flexible billing models such as usage-based pricing, subscriptions, prepaid balances with auto top-up, and enterprise contracts. The role emphasizes correctness, precision in event measurement, and invoice accuracy.
Requirements
- 6+ years building production backend systems, of which 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: worked on 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
Nice To Haves
- Led a billing system migration or re-platform with zero revenue loss or downtime
- Built hybrid billing combining usage, subscriptions, and prepaid in one system
- Worked across both a payments layer (Stripe) and a metering / rating layer (Metronome / Orb)
- Billed a developer-facing / API product with pay-as-you-go and API-key metering
- Used Snowflake for usage aggregation and revenue analytics
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)
Benefits
- 100% company-paid medical, dental, and vision coverage for employees and families
- Up to 4% company match with immediate vesting for 401(k) plan
- 20 weeks paid parental leave for primary caregivers, 12 weeks for secondary caregivers
- Up to $85/month reimbursement for mobile and internet
- Company-paid short-term, long-term and life insurance coverage
- Competitive compensation
- Career growth and learning opportunities
- Flexibility and ownership
- Collaborative and innovative culture
- Opportunity to work on impactful AI projects
- International environment and talented teams
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
