David Freitag

About David Freitag

Senior Data Engineer skilled in building mission-critical, reliable, efficient, high-volume data pipelines. History of effective project leadership, stakeholder management, and mentorship of junior engineers. Former high school teacher.I also teach a course called Build Your First Serverless Data Engineering Project: https://maven.com/david-freitag/first-serverless-de-projectTech skills: Python, SQL, BigQuery, Snowflake, GCP, AWS, Airflow, Docker, Kubernetes, GitLab CI/CD, ETL, data modeling.

Experience

1. Senior Data Engineer

   American Family Insurance

   Feb 2023 — Present

   Infrastructure Lead on a high-priority AI pilot initiative to improve underwriting risk review accuracy and speed. Responsible for scaling the infrastructure of the AI-powered minimum-viable-product application to additional operating companies, lines of business, and sources of structured and unstructured data. Tech: Python/SQL, GitLab CI/CD, Terraform, GCP Pub/Sub, Docker/Cloud Run, BigQuery, Pydantic AI, LangGraph, Kubernetes.Architected and built multiple ETL pipelines to refresh terabyte-size datasets on demand for data science modeling. These datasets powered the models used to re-price AmFam’s Auto and Property insurance products in all 50 states in 2025. Tech: BigQuery SQL, Airflow, Docker, Kubernetes.Improved, automated, and extended a vendor file transfer process for preparing and transferring data securely. Scaled the pipeline to prep and encrypt TB of data in parallel, improving runtimes from days to minutes. Tech: Google Cloud Storage, GCP Secret Manager, GNU Privacy Guard (PGP encryption), Google Batch.Mentor junior engineers in both soft skills and technical skills.

Education

• Baruch College

  Master of Science (M.S.)

  2020 — 2021

• University of Wisconsin-Milwaukee

  Bachelor of Science (B.S.)

  2007 — 2012

Skills

• Online Tutoring
• Computer Maintenance
• Teaching English as a Second Language
• Educational Fundraising
• Secondary Education
• Research
• Educational Technology
• Tutoring
• Common Core State Standards
• Curriculum Mapping
• Staff Development
• Editing
• Student Affairs
• English
• Curriculum Development
• Literature
• Proofreading
• Test Preparation
• Teaching
• Fundraising
• Public Speaking
• Teaching Writing
• Higher Education