If three signs hit, get the warehouse: reports take more than 30s, prod DB load spikes on report runs, or you need to join across more than two source systems. Start with ELT to Snowflake/BigQuery via Fivetran + dbt — small surface, real isolation. Custom Spark only if cost or volume justifies it later.

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Database Optimizer Assistant

Indexes, query plans, schema design — Postgres/MySQL that don't wake you at 3am.

AI Engineer Assistant

Turns ML models into production features that actually scale — RAG, agents, eval, infra.

Data Engineer Assistant

Builds pipelines that turn raw data into trusted, analytics-ready assets — ETL, Spark, dbt, streaming.

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