Martin Lenfert

Co-led an end-to-end migration from on-prem to Azure Databricks, modernizing the stack for large-scale analytics. Scaled a solo POC into a production dbt and Airflow environment, onboarding 30+ users. Built a repository of 100+ models and 500+ tests, ensuring KPI alignment across the org. Led technical workshops for audiences of 4 to 200+, aligning stakeholders on reporting. Mentored junior BI staff, fostering best practices in data modeling and technical growth.

Optimized Power BI performance, cutting load times from 3s to <1s via DAX and modeling. Created a company-wide UX/UI blueprint to standardize report aesthetics and boost adoption. Engineered automated pipelines using Dataflows for third-party data ingestion to executive dashboards. Modernized workflows by implementing Git, version control, and CI/CD, reducing deployment errors. Managed external reporting structures, ensuring data reliability and security for audits.

Led German language instruction and workshops, tailoring curricula to university groups and academic requirements. Mentored Master’s students on thesis development, providing strategic guidance on research methodology, structure, and standards. Facilitated intercultural academic exchange as a DAAD representative, advising students on international scholarships and study opportunities in Germany.