Principal Software Engineer

POS-33300 About the Team [in-office, hybrid, and remote] HubSpot's Adaptive Monetization group owns the systems that determine how customers buy, contract, and pay for HubSpot — at scale, with direct financial consequence. Our infrastructure handles usage metering, contract orchestration, and subscription lifecycle management for every customer on the platform. An outage here doesn't just affect user experience; it blocks customers from purchasing HubSpot entirely, and bugs typically produce immediate, measurable financial impact. We're in the middle of a multi-year shift to transform HubSpot's straight-line SaaS subscription model and replace it with a flexible contracting layer that can support usage-based billing, commit-based pricing, and enterprise-grade contract structures.…