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Senior Software Engineer, Cortex Quality

Snowflake Inc.· Engineering
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Hybrid (US-CA-Menlo Park)$200k - $270kFull-timePosted 2mo ago

About the role

Measurement-first role owning the quality, cost, and reliability of Cortex Code end to end, turning research capability into real user value for coding/data-engineering workflows.

Responsibilities

  • Take agents from prototype to production: design and refine agent behaviors for real coding and data-engineering workflows, and make them reliable enough to depend on.
  • Own agent quality end to end: build eval harnesses, diagnose failure modes from real agent trajectories, and run experiments that hillclimb the metrics that matter.
  • Drive down cost and latency without regressing quality: prompt caching, context compaction, tool-result offloading, and cheaper model routing for sub-tasks.
  • Debug production failures and systematically increase robustness: close the loop from a customer’s broken run back to a fix and a regression test.
  • Build the data pipelines that feed real-world task insights back into evals and modeling.
  • Onboard and bake off frontier models: measure their strengths and failure modes, and decide where each belongs in the product.
  • Partner with product and infra: shape user-facing agent behavior, and set the metrics and standards that define a successfully completed complex task.

Qualifications

  • Bachelor’s degree in Computer Science, Engineering, Statistics, or a related field. Master’s or higher preferred but not a requirement.
  • 6+ years of experience shipping software in production, including AI/LLM features.
  • Fluency in at least one of Python, TypeScript, or Go, and willingness to work across all three.
  • A measurement-first, systems-thinking instinct: you optimize for user outcomes over isolated metrics, and you can design an eval that is not fooling you (sampling, ground-truth quality, leakage, noise).
  • Comfort debugging complex, unpredictable, real-world failures.
  • Strong communication skills: you can make a quality or cost result legible to engineers, product, and leadership, and collaborate effectively in a team environment.

Skills

Required:PythonTypeScriptGoMeasurement and evaluation designProduction debugging
Last updated Sep 3, 2026. Interested? Apply on the company site.

About Snowflake Inc.

The Data Platform Built for Data Teams.

Snowflake powers AI, data engineering, applications, and analytics on a trusted, scalable AI Data Cloud—eliminating silos and accelerating innovation.

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