Senior Software Engineer, Core Product Systems

What you'll do

• Own billing and pricing first — metering, usage roll-ups, pricing logic, and the customer/admin surfaces that make cost understandable and trustworthy.
• Design APIs, data models, and product contracts other teams safely build on.
• Grow into the broader portfolio — accounts, access/identity, API keys, and model discovery — and the surfaces that expose usage, cost, and access.
• Engineer for correctness and resilience: source of truth, idempotency, auditability, permissions, observability, graceful failure.
• Own operational health, including on-call for the systems you build.
• Partner across product, infra, finance, revenue, security, and customer-facing teams — turning messy, manual workflows into durable systems.

Requirements

• 5+ years building reliable, production backend systems (Python and/or TypeScript).
• Strong PostgreSQL — schema design, queries, migrations, performance.
• API & data-model design for complex product or business domains.
• Can ship product and internal surfaces in React / Next.js / TypeScript.
• Strong systems judgment (source of truth, idempotency, auditability, permissions, observability) and product judgment (workflows, edge cases, customer trust).
• Thrives in ambiguous, cross-functional work where product, business logic, and infra overlap; ships a pragmatic v1 that can evolve. Priorities move fast — you're comfortable with that.

Nice-to-have

• Usage-based billing / metering / pricing — Stripe, Orb, Metronome, or similar.
• Identity & access — permissions, SSO, API keys, org/account hierarchy.
• Developer platforms, model registries, or usage/observability dashboards.
• Generative AI / inference APIs or other developer-facing AI products.

Our stack

• Python (primary backend)
• TypeScript + React/Next.js (product surfaces)
• PostgreSQL / SQL
• with some migration to Rust underway.

Compensation

$190,000 - $230,000 + equity + comprehensive benefits package