Senior Software Engineer; Billing

Role overview:

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. In this position, your responsibility will be to design and operate the billing platform end to end, build metering and usage-aggregation pipelines, design and operate prepaid credit/wallet systems with auto top-up and balance management, support enterprise/contract billing with custom pricing, and 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).

6+ years building production backend systems, 3+ years building and operating billing or metering systems; experience with usage-based metered billing, subscription billing, prepaid credits, enterprise billing; expertise in Python and Type Script/Node;
Postgres; data pipelines with Kafka or Kinesis to Snowflake/Big Query; PLG billing;
Auth0/Okta; SOX compliance.

migration experience, hybrid billing, Stripe/Metronome/Orb integration; developer-facing API billing.

etc.