In 4 weeks, I was able to create a data mart that had self-healing (we had issues with Python/events missing data which should have reached the existing data wa

In 4 weeks, I was able to create a data mart that had self-healing (we had issues with Python/events missing data which should have reached the existing data warehouse) and the physical data models in it sped up an existing 6 hour ETL task down to 0.15 seconds AND speed up a production query that took 5 seconds per click down to 0.07 seconds. No team needed or proof of concepts. Actual working data models, up to date tables + ETL code in production. Background is DBA.