Sr Backend Engineer, Billing
Core
Design and build systems for plans, pricing, entitlements, and usage limits; decompose a billing monolith into correct, testable, independently deployable services.
Role type
Senior Backend Engineer (Billing)
Builds
Checkout, subscription and entitlement APIs, usage metering, and integrations to billing, CRM, and finance systems
Domain
SaaS billing infrastructure
Deliverable
production ML models | product features
Required skills
Go, Rust, Python, AWS, Terraform, Postgres, monolith decomposition, idempotency, reconciliation, reversible migrations, safe cutovers, production ownership, on-call
Preferred skills
Billing, payments, metering systems, usage-based pricing, entitlement modeling, quotas, multi-tenant limits
Responsibilities
Design and build systems defining plans, pricing, entitlements, and limits; Decompose billing from a monolith into services; Own correctness end-to-end including usage metering and reconciliation; Operate built systems via SLOs, alerting, and on-call
