Nebius · New York City, New York, United States ·
tavily · Tel Aviv
Nebius Group · London, United Kingdom
Tavily · New York City, New York, United States
MongoDB · Palo Alto
Design and build a billing platform for a novel AI-powered search engine, handling usage-based pricing, subscriptions, and enterprise contracts with financial-grade accuracy.
About Nebius:
Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.
Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.
Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D.
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.
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 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)
What we're looking for:
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 have:
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
Why Tavily?
Key employee benefits in the US:
Pay Transparency
We offer competitive compensation and benefits packages. Actual compensation will be determined based on job-related factors, including experience, skills, qualifications, the level at which the candidate is hired, and geographic location, consistent with applicable law.
Benefits & Perks:
What's it like to work at Nebius:
Fast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AI
Equal Opportunity Statement:
Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.
Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire.
If you need accommodations during the application process, please let us know.
Ebury · Porto