Michael Hyle

Data Engineer

American Express

Powered sub-second fraud and dispute-risk decisioning on the Risk & AI Data Platform, streaming tens of millions of daily events through Kafka and Spark Structured Streaming into a Delta Lake medallion lakehouse served via CouchDB. Owned training-data delivery for fraud and risk models, designing point-in-time temporal snapshot joins in PySpark that eliminated label leakage from delayed chargeback

KafkaApache SparkPySparkSpark Structured StreamingDelta LakeMedallion Lakehouse ArchitectureCouchDBMLFlowRAG PipelinePgvectorPythonAirflowGreat ExpectationsDBTData LineagePII MaskingRBACPCI Like Controls

Data Engineer

Delivered the ACH Payment Analytics Platform, the company's first cloud analytics platform on AWS and Snowflake, ingesting recurring ACH origination, return, and settlement files via S3, AWS Glue, and Snowpipe. Automated daily three-way reconciliation across payment processors, banks, and the contract-servicing system, reducing manual reconciliation effort by 70%.

AWSS3AWS GlueSnowflakeSnowpipeDBTTableauPythonTerraformAirflowCI CDData MaskingRBAC

Consultant

Reduced client reporting latency from next-day batch to near real time on an Enterprise Data Warehouse Modernization engagement, migrating a healthcare client's legacy warehouse to BigQuery with Dataflow (Apache Beam), Pub/Sub streaming, and Cloud Composer (Airflow).

BigQueryDataflowApache BeamPub SubCloud ComposerAirflow

Engineer

Built SQL and Excel/VBA-based data pipelines for an Infrastructure Asset Data & Analytics program, consolidating field inspection, asset, and project-cost data across large infrastructure programs and automating engineering analysis models and recurring client reporting.

SQLExcelVBA