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David Zimmerman

@davidzimmerman1

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I build governed, reliable data platforms for healthcare, financial services, and AI-enabled workflows.

United States

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What I'm looking for

I’m looking for a senior data engineering role where I can stay hands-on, own projects end to end, and help shape technical decisions. I enjoy solving complex data problems, building reliable platforms, and working with collaborative teams using modern cloud and data technologies.

At Thoughtworks, I lead enterprise data-platform delivery from discovery and architecture through migration, production readiness, and team handoff. I’ve modernized healthcare, financial-services, and digital-product data estates while restoring at-risk migrations and improving operational trust.

I build reusable Azure and Microsoft Fabric foundations with reconciliation, observability, governed semantic models, data contracts, and controlled releases. My work has kept more than 100 operational reports stable, enabled near-real-time service data products, and reduced cloud spending by roughly one-third.

Previously, I modernized HIPAA-controlled healthcare data at Elevance Health, engineered connectors and replication services at Fivetran, and built banking workflows and large-scale data processing at Capital One. I focus on traceable, supportable data products that teams can confidently own after launch.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Thoughtworks

Feb 2023 - Present (3 years 7 months)

Leads data-platform delivery for enterprise clients, moving from discovery and architecture through migration, production readiness, and team handoff across healthcare, financial services, and digital-product engagements.

Data Engineer

Elevance Health

Jul 2020 - Feb 2023 (2 years 7 months)

Modernized regulated healthcare data products for claims, eligibility, provider, pharmacy, quality, and care-management teams in a HIPAA-controlled Azure environment.

Azure Python SQL PySpark ETL ELT Data Modeling Data Quality HIPAA PHI Data Lineage Data Governance Delta Lake Azure Data Factory Azure Databricks ADLS Gen2 Unity Catalog ABAC Encryption Data contracts SLIs SLO SLAs

Data Engineer

Fivetran

May 2017 - Jun 2020 (3 years 1 month)

Engineered connectors and replication services for a managed data-integration product, developing depth in source behavior, change capture, destination correctness, schema evolution, and multi-tenant production operations.

Python SQL PostgreSQL MySQL Snowflake Amazon Redshift BigQuery Change Data Capture ETL Data Integration Schema Evolution Telemetry Testing Multi Tenant Environments AWS GCP

Software Engineer

Capital One

Mar 2015 - Apr 2017 (2 years 1 month)

Moved from application services into large-scale data processing, building secure banking workflows and the batch, event, and early cloud foundations used by risk and operations teams.

Java SQL AWS ETL Batch Processing Event Driven Architecture Data Reconciliation Fraud Detection Tokenization Security Cloud Migration

Associate Software Engineer

Accenture

Sep 2014 - Feb 2015 (5 months)

Built an enterprise engineering foundation during a six-month consulting assignment, contributing to application integration, ETL delivery, reconciliation, testing, and production support under senior-team guidance.