At Delimobil, I build and run a data platform for three analytics teams, supporting about 40 analysts and around 190 marts. The platform spans a Vertica warehouse, a Hadoop data lake, and a SingleStore real-time layer.
I built self-service validation for mart changes: it compares a mart built from a merge-request branch with production and reports data differences and resource use to Telegram and the merge request. This moved review from reading SQL to checking numbers.
I also launched a product pipeline for speeding fines, connecting a daily telematics violations mart to Kafka and a product API for automatic fines and blocks. I migrated sources to the in-house ELT framework and built a schema migration tool that syncs schemas across three countries.
Previously, at Action Technologies, I automated raw data loading and built reconciliation for master systems. Earlier, I worked on ClickHouse analytics for VkusVill at Datalab and automated advertising data collection and marketing marts at GetRentaCar.
