Chief Data Scientist at Dovenmuhle Mortgage

Migrated reports from on-premise servers to Azure cloud using PySpark, Spark SQL, and Scala; drafted audit documents to ensure compliance; built an internal cloud-based machine learning framework using Azure ML; evaluated cloud providers to ensure a smooth migration.

Data Science Manager at Nielsen

Led and mentored a data science team of up to eight with accountability for data quality, model accuracy, analytics deliverables, and data storytelling; built ML models using Python, Spark, and AWS to impute demographics, create market segments, stabilize TV ratings, and optimize ad spend; created validation dashboards for daily monitoring using PySpark and Spark SQL in Databricks; developed models and pipelines to ensure data accuracy and third-party data integrity; defined KPIs and produced technical documentation; deployed a novel ML application to deduplicate digital audiences across platforms.

Associate Manager at Nielsen

Managed and mentored a data team of up to eight data scientists with responsibility for data quality, model accuracy, analytics deliverables, and data storytelling; deployed and validated four demographic imputation models with rating impact for cable providers; filed three US patents related to data quality and demography imputation; provided ongoing methodology support to internal leadership and external stakeholders; delivered custom analyses comparing cable demographics to internal datasets.

Lead Data Scientist at Nielsen

Evaluated cable company data in R to establish readiness for modeling; built GBM models in R as proofs of concept to predict demographics from television viewing; deployed models for tens of millions of cable subscribers; created SQL+R-based ranking products for the largest U.S. cable company; developed data transformation methods in SQL and R to ensure consistent television ratings while incorporating big data sources; conducted ad hoc analyses and presented findings to leadership and stakeholders.

Data Analyst at Easy Care

Architected and developed executive dashboards with key KPIs surfacing marketing effectiveness using SQL and MicroStrategy; trained a GBM model in R to predict auto mileage to improve efficiency; built ML models to optimize customer targeting by redirecting resources and re-prioritizing auto dialer and direct mail queues; trained interns on SQL and R.