Julian Pelzner
I’m Julian Pelzner, a data and research leader who builds reliable Python and SQL pipelines to turn complex datasets into clear, actionable insights for business teams.
About
I’m Julian Pelzner, a data and research leader who builds reliable Python and SQL pipelines to turn complex datasets into clear, actionable insights for business teams. I’ve architected version-controlled workflows, automated reporting for large client portfolios, and created data products that help sales teams prioritize outreach and make smarter decisions across many market areas.
- 5 years' experience
- Joined September 2026
Industry experience
- Energy & Utilities
- Government
- Software & Internet
- Professional Services
- Media & Entertainment
Work experience
Aggregated and analyzed historical sales data to optimize production reruns, reducing overstock by ~25%. Scoped, designed, and delivered 20+ custom apparel projects end to end, translating client creative goals into defined specs, budgets, and production timelines.
Architected a version-controlled Python pipeline that cleaned and aggregated U.S. Census demographic data across 5+ tables into a subdivision-ranking model for sales prioritization across 50+ market areas. Added geospatial processing with GeoPandas and Tableau mapping for stakeholder-friendly communication. Partnered with product and sales to transform raw event data into user engagement and journey metrics using OpenSearch, DuckDB SQL, and Tableau. Automated weekly and monthly business reporting for 100+ clients with data validation, reducing cycle time from ~4 hours to ~15 minutes.
Forecasted citywide electric vehicle adoption and energy demand to inform the utility’s Integrated Resource Plan. Researched and optimized carbon allowance purchasing strategy under California’s Cap-and-Trade program, generating additional revenue for the utility.
Education
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