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Jonathan Hazeley

About

Migrations fail on trust, not on code. I lead Databricks migrations and build the proof that lets a business commit to the platform.

I started in mechanical engineering. An interview at Siemens turned me toward data. That detour became business school, then a few startups, then a decade building the data infrastructure behind business decisions.

Since October 2025 I have been the client-facing technical lead on four engagements across Entertainment, Finance, Healthcare, and Real Estate. Two or three run at once, because the next engagement starts before the last one closes. I wrote the technical case behind a ~$1.5MM Microsoft and Databricks ECIF proposal. Before consulting: at NC DIT I architected Delta Live Table pipelines that delivered statewide transportation data 30% faster than the legacy ETL; at Snap One I helped drive a 50% EBITA increase (~$50M) by building the pipelines and the governance framework behind them, and certifying the metrics leadership acted on; at Celonis I turned enterprise process data into ~$10M business cases executives would actually fund.

My focus now is AI-native data engineering: lakehouse platforms designed for the agentic era, and using AI to accelerate the engineering work itself. In practice that means a Databricks engineering catalog other engineers build inside, and agentic systems on Model Context Protocol and the Claude Agent SDK that automate the translation and validation a migration otherwise repeats by hand, and the deployment that follows. I am looking for Principal work where the mandate is the platform and the practice, not the next pipeline.

Outside the job I box, dance salsa, bachata and merengue, and build furniture in a shop I document the same way I document a lakehouse. 15 countries so far, most of them in Latin America and the Caribbean. The through-line, if there is one, is a preference for practices with an honest feedback loop: the round, the dance floor, and a joint that either closes or does not.

Skills

Languages & processing
  • SQL
  • Python
  • PySpark
  • Apache Spark (Structured & Streaming)
  • Working knowledge:
  • Pandas
  • NumPy
Databricks & lakehouse architecture
  • Databricks
  • Unity Catalog governance
  • Lakeflow Declarative Pipelines
  • Delta Live Tables
  • Delta Lake
  • Databricks Asset Bundles
  • Auto Loader
  • Medallion architecture (bronze/silver/gold)
  • Data Vault 2.0
  • Data Mesh
  • Dimensional modeling (SCD Type 1/2)
  • Migration architecture
Storage & query engines
  • Snowflake
  • BigQuery
  • Postgres
  • Working knowledge:
  • Amazon Athena
  • Presto
  • Trino
Cloud & delivery
  • Azure (ADLS, Fabric)
  • AWS
  • GCP
  • ETL / ELT
  • CI/CD for data
  • Environment promotion
  • Azure DevOps
  • GitHub Actions
  • Git
  • dbt
  • Fivetran
  • Astronomer
  • Working knowledge:
  • Apache Airflow
AI & agentic systems
  • Azure OpenAI
  • Model Context Protocol
  • Claude Agent SDK
  • Prompt design & engineering
  • Agent evaluation
Analytics & BI
  • Power BI
  • Epic Clarity / Caboodle
  • Heap.io
  • Celonis
  • Working knowledge:
  • Tableau
  • Redash
Practice & leadership
  • Databricks migrations
  • Data governance frameworks
  • Test-driven development for pipelines
  • Mentorship & technical guidance
  • Multi-engagement delivery
  • Level-of-effort estimation
  • Discovery workshops
  • Stakeholder management
  • Agile / Scrum

Education

  • M.S. Management (Business Analytics)

    Wake Forest University School of Business · 2017

  • B.S. Mechanical Engineering

    University of North Carolina at Charlotte · 2015

Credentials

All credentials
  • Databricks Certified Data Engineer Associate
  • AWS Certified Cloud Practitioner

Plus 13 training and course credentials across Data Engineering, AI, Cloud & Delivery.

Outside work

The longer version
  • Boxing
  • Salsa, Bachata, Merengue
  • Woodworking

Plus 15 countries across 4 regions, most of them where the music I dance to comes from.