Lago

Lago is the leading open-source billing platform for usage-based pricing, powering billing for companies like PayPal, CoreWeave, Mistral AI, and Synthesia. It handles real-time metering, hybrid pricing models, credit wallets, and multi-entity invoicing. Lago raised $22M (Series A led by FirstMark, seed backed by Y Combinator) and is growing across AI/ML, developer infrastructure, and enterprise segments. Hiring multiple roles in Product and Engineering across Europe and USA, including Infrastructure Engineer (Europe) and Product Engineer (Europe) and Product Engineer (Growth focused, USA or Europe).