HardTechnologyfinance

Cross-Source Financial Analytics with Presto and Data Governance

Added Jun 2025 3 design docs

Financial data never lives in one place: trading records sit in a warehouse, historical archives in object storage, and reference data in relational databases, and analysts lose days to moving data around before they can even ask a question. Federated query engines dissolve that friction by querying data where it lives, but in finance they must arrive with lineage and access control attached.

The intern builds a federated analytics platform where Presto executes ad-hoc SQL across Hive tables, S3 data, and RDBMS sources in a single query. Ingestion flows through Kafka Connect and Flume into HDFS and S3, Spark handles transformation workloads in Python, and Apache Iceberg manages versioned table formats supporting time travel and safe schema evolution on the analytical datasets. Governance is a core deliverable, not an afterthought: Apache Atlas captures metadata and data lineage so analysts can trace any figure to its source, while Apache Ranger enforces fine-grained access policies determining who can query which tables and columns.

The intern demonstrates mastery of federated architecture and the governance tooling that regulated industries require, showing they can design platforms where analytical freedom and institutional control coexist, precisely the profile financial data teams recruit for.

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