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Software Engineer, Money Platform

OpenRouter· Engineering
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Remote$215k - $285kFull-timePosted 4d ago

About the role

OpenRouter is hiring for a Software Engineer to design and own the money engine behind the inference gateway, marketplace, and AI-first, agentic Money Platform. The role focuses on metering, pricing, invoicing, credits, payments, payouts, and the ledger to capture and reconcile revenue and usage in a scalable, auditable financial system.

Responsibilities

  • Flexible pricing and contract terms. Any commitment size, BYOK pricing, overages, platform fees and per-seat pricing. Sales and CS should be able to test new deals without an engineer.
  • Automate quote-to-cash. Take a signed contract straight to a provisioned, correctly billed customer with no manual uploads. Handle POC and production contracts as separate flows. Build credit transfers at onboarding and self-serve credit grants for CS into our own tools.
  • Define the source of truth. Financial core that owns fees, plans and entitlements. Establish robust data architecture for internal and customer reporting.
  • Own usage → revenue. Every completed request is metered, priced and recorded exactly once, across our streaming spend-tracking pipeline and usage records. Reconcile what we served against what we charged.
  • Own billing, payments & collections. Invoicing, prepaid credits, auto top-ups, refunds, tax/VAT, POs and spend-against-commitment tracking. Stripe integration, failed-payment recovery and overdue-invoice collections.
  • Build the ledger, AP & reconciliation. Double-entry ledger as the financial system of record. Automate reconciliation across Postgres, Stripe, billing and usage data. Own provider settlements and payables, and hand Finance close-ready numbers.
  • Work cross-functionally. Partner with Provider, Trust & Safety, Sales, CS and Finance; translate messy business asks into clean systems.
  • Treat correctness and controls as features. Ensure idempotency, anomaly detection, auditability and least-privilege access for finance tools. Every dollar must be explainable and traceable.

Qualifications

  • 5+ years building production financial systems: billing, payments, ledgers or revenue infrastructure, at fintech or usage-based SaaS.
  • Deep fluency in money-correctness patterns: idempotency, double-entry accounting, exactly-once event processing, reconciliation and safe migrations of financial data.
  • Hands-on experience with Stripe (or similar processors) and a billing/invoicing platform, including contract, subscription and usage-based models.
  • Strong TypeScript and SQL. Comfortable with Postgres and analytical stores (ClickHouse or similar) at high event volume.
  • Working knowledge of accounting: AR/AP, revenue recognition, deferred revenue, month-end close.
  • Ability to work across teams with Provider, Trust & Safety, Sales, CS and Finance; translate business asks into clean systems.
  • High agency and AI-forward. Experience using coding agents and automating finance ops.

Skills

Required:TypeScriptSQLPostgreSQLAccounting fundamentals

Benefits

  • Equity (offered)
  • Competitive base salary: $215K – $285K
  • Remote-friendly work environment
Last updated Oct 22, 2026. Interested? Apply on the company site.
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About OpenRouter

The Unified Interface For LLMs

A router for LLMs and other AI models

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