Member of Technical Staff, Billing
The Role
Comfy lets people build creative workflows that combine open-source models running on our GPUs with paid APIs from model providers. Every run has a cost. Customers need to understand what they’re spending, and we need to charge accurately as models, prices, and products change.
You’ll own the engineering behind that: how we meter usage, collect payments, manage credits and subscriptions, and protect against financial abuse. You’ll make billing dependable for customers and give the team the tools to launch new pricing models with confidence.
Our billing stack uses Go, PostgreSQL, Redis, Temporal, Stripe, and Metronome, alongside Python and Kubernetes across the broader platform. You’ll evolve an existing system, work across service boundaries, and take changes from design through production.
What you’ll do
Capture usage reliably. Build metering for GPU compute and partner model APIs. Handle delayed events, retries, and partial failures so every billable event is recorded once and attributed to the right workspace.
Own the payment lifecycle. Improve checkout, subscriptions, credit top-ups, plan and seat changes, prorations, refunds, and failed-payment recovery. Keep Stripe,
