L
$175,000 – $240,000
Listed on LangChain’s own careers site. You apply with them directly — we never stand between you and the employer.
What this role is
LangChain is seeking a senior backend engineer to redesign their billing infrastructure into a flexible, self-serve platform that enables teams across the company to launch new pricing models quickly without specialized knowledge. You'll work on complex usage and token-based pricing systems, metering, and invoicing integrations for an AI platform used by major enterprises.
Our summary, not LangChain’s wording. The full posting is on their site.
Skills this role names
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What they ask for
Required
- 5+ years backend engineering experience with Python or Go
- Hands-on experience building or scaling usage-based, subscription, or consumption billing infrastructure
- Experience with metering, invoicing, or pricing-model logic
- Familiarity with Postgres, Redis, APIs, and distributed backend infrastructure
- Strong ownership mindset and ability to work in fast-paced startup environments
Nice to have
- Experience with token-based or usage-based cost tracking from LLM or API-first companies