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Aly Ahmed

@alyahmed4

Lead Data Engineer at Health Catalyst building governed healthcare data platforms and model-ready datasets for analytics and AI/ML.

United States

Message

At Health Catalyst, I architect AWS data platforms for healthcare analytics, clinical applications, and AI/ML use cases. I build governed data layers from claims, clinical, EHR, and operational information, including model-ready datasets and data contracts.

I’ve also worked on multi-tenant SaaS data platforms at CircleCI, real-time fraud and transaction pipelines at Marqeta, and e-commerce data pipelines at Gumroad. My work includes FHIR and HL7 interoperability, data quality monitoring, and predictive analytics; a healthcare platform project reduced incident-detection time by 40%.

Experience

Work history, roles, and key accomplishments

Current

Lead Data Engineer

Current

Health Catalyst

Nov 2022 - Present (3 years 11 months)

Architect enterprise-scale AWS data platforms for healthcare analytics and AI/ML use cases. Design and operate scalable batch and analytical pipelines using PySpark, Spark SQL, Airflow, dbt, Snowflake, and Databricks.

AWS PySpark Spark SQL Airflow DBT Snowflake Databricks FHIR HL7 Healthcare Data Data Governance PHI PII Data contracts Entity Resolution Data Quality 99.9% Availability Mentorship

Senior Big Data Engineer

CircleCI

Apr 2020 - Oct 2022 (2 years 6 months)

Architected multi-tenant SaaS data platforms for predictive analytics and machine learning. Built real-time pipelines using Kafka, Flink, and Debezium, and developed Spark-based processing workflows.

Kafka Apache Flink Debezium Spark DBT SQL Anomaly Detection Data Quality Tableau Product Analytics Multi tenant SaaS Data Pipelines

Cloud Data Engineer

Marqeta

Nov 2017 - Mar 2020 (2 years 4 months)

Built cloud data platforms for financial analytics, fraud detection, and transaction monitoring. Developed real-time streaming pipelines using Kafka and AWS Kinesis, and designed enterprise data warehouse solutions.

Kafka AWS Kinesis AWS Glue Lambda S3 Snowflake Amazon Redshift BigQuery PCI DSS SQL Workload Optimization

Data Engineer

Gumroad

Aug 2015 - Oct 2017 (2 years 2 months)

Designed high-volume pipelines for e-commerce clickstream, customer, order, and inventory data. Built curated customer and behavioral datasets for segmentation and personalization.