Rowen Asher
@rowenasher
Senior Data Engineer specializing in scalable lakehouse architectures and real-time analytics.
United StatesWhat I'm looking for
I am a Senior Data Engineer with over eight years of experience designing and delivering robust, compliant data platforms across Fintech and Healthcare. I build and migrate enterprise workloads to cloud-based lakehouse architectures using Apache Spark, Databricks, Delta Lake, and Kafka, focusing on performance, governance, and automation.
I have led large-scale migrations and real-time systems that process millions of transactions daily, implemented HIPAA/GDPR-aligned data controls, and partnered with product and data science teams to productionize ML models and reduce fraud false positives. I prioritize cross-functional collaboration, reproducible CI/CD, and measurable business impact.
Experience
Work history, roles, and key accomplishments
Senior Data Engineer
Chime Financial
Jul 2024 - Present (1 year 2 months)
Spearheaded development of a real-time data lakehouse on Azure Databricks processing 10M+ banking transactions daily with sub-minute latency; reduced fraud false positives 40% by deploying ML models and enforced governance with Unity Catalog.
Big Data Engineer
Oscar Health
May 2019 - Jun 2024 (5 years 1 month)
Led migration from Hadoop to Spark + Delta Lake on AWS, cutting processing times for claims and member data by over 60% and building Airflow/PySpark pipelines to process billions of records monthly while ensuring HIPAA-compliant PII masking and data quality.
Data Engineer
HealthPay
Jun 2016 - Apr 2019 (2 years 10 months)
Developed ETL pipelines with Talend and NiFi to consolidate payer, provider, and financial data into Snowflake; designed dimensional data warehouse and dashboards that improved monitoring of denial rates, AR days, and patient satisfaction.
Education
Degrees, certifications, and relevant coursework
UAUniversity of California, Los Angeles
Bachelor of Science, Computer Science
Completed a Bachelor of Science in Computer Science focused on fundamentals of computing and software development.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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