Senior Software Engineer, Billing

Sentry Sentry · Enterprise · San Francisco, CA · Engineering

Senior Software Engineer to architect and scale core systems for Sentry's billing infrastructure, focusing on accuracy and reliability at massive scale. The role involves building a next-generation usage tracking pipeline processing billions of events daily and designing flexible pricing primitives. Key challenges include ensuring financial accuracy, handling event delays, retroactive pricing changes, and distributed count reconciliation.

What you'd actually do

  1. You will collaborate on building the next generation of Sentry’s usage tracking pipeline, processing hundreds of billions of events daily with low latency and financial-grade accuracy.
  2. You will help design flexible pricing primitives that support everything from per-event usage billing to complex enterprise contracts, enabling product and sales teams to experiment rapidly while maintaining revenue accuracy and reduced time-to-market for new products.
  3. You will contribute to technical decisions on data consistency challenges unique to billing—like handling event delays, retroactive pricing changes, and distributed count reconciliation across our infrastructure.

Skills

Required

  • Experience building or significantly improving systems that handle financial data or high-stakes accuracy requirements (e.g., billing systems, payment processing, accounting platforms, or financial data pipelines).
  • Experience mentoring engineers through ambiguous, high-stakes projects.
  • Experience operating services where reliability includes uptime and also financial correctness.

What the JD emphasized

  • financial data
  • high-stakes accuracy requirements
  • billing systems
  • payment processing
  • accounting platforms
  • financial data pipelines
  • financial accuracy is non-negotiable
  • billing transparency
  • financial correctness