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SERGIO SÁNCHEZ

v0.4 · Jan 17, 2026 · San Francisco Bay Area

AI/ML Data Operations

2024-2026AI Ops & ML InfrastructureClient: TalkingPoints
AI quality assurance, cost controls, evaluation frameworks

Message classification stewarded to production. Machine Translation Quality Estimation app for self-service evaluation. Cost safeguards and visible tradeoffs.

Technology Stack

Snowflake AI CortexStreamlitPythonNLPdbt

Links

Frequently Asked Questions

How do you evaluate AI classification accuracy when ground truth is expensive?

Sample-based evaluation with human labeling. You can't label everything, but you can label enough to estimate accuracy and identify systematic errors. The key is choosing samples that are representative, not just convenient.

How do you balance AI capability with cost constraints?

Make the tradeoffs visible. Every AI feature has an accuracy level, a latency, and a cost per unit. Build dashboards that show all three. Let stakeholders decide what tradeoff they want, instead of making that decision invisibly in the engineering layer.