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ML Engineer MasterClass (April) | 6 seats left
A fintech company's revenue dashboard showed $0 for an entire day. Not a business problem. Not a bug in the product. An upstream team had renamed a column in their events table, the join key silently resolved to null, and every downstream aggregation returned nothing. The ETL jobs ran successfully. No errors, no alerts. By the time anyone noticed, 36 hours had passed and the data was already baked into financial reports....
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