Haris S.

I build Power BI and Microsoft Fabric reporting for operations and finance teams star-schema models, optimized DAX, and pipelines that don't break. Most of my work starts the same way: a business is running on a dozen Excel files, three people maintain them by hand, and nobody fully trusts the numbers in the Monday meeting. I consolidate the sources, build a proper dimensional model underneath, and deliver reports leadership actually opens. RECENT WORK Rebuilt a fragmented multi-source Excel reporting stack into a single Power BI model scoped, built, and delivered in one day. 5-star review. Cut report generation time roughly 90% on a sales dashboard by reworking the data model and rewriting the DAX behind the slow visuals. Diagnosed a broken ETL pipeline where loads were silently dropping rows, then rebuilt it with validation so the failure couldn't repeat quietly. WHAT I DO Power BI report and dashboard development Data modeling — star schema, relationships, row-level security DAX measures, calculation groups, and performance tuning Microsoft Fabric — Lakehouse, Warehouse, Pipelines SQL Server, Azure SQL, and Azure Data Factory ETL/ELT Power Query and Excel-to-BI migrations Dataset optimization, refresh failures, and report performance audits BACKGROUND I'm a Senior BI Developer at Avanceon, delivering enterprise reporting for GCC oil & gas, manufacturing, and logistics clients — SAP and SQL Server sources, Azure Data Factory pipelines, and C-suite dashboards built under strict data governance. Before that I built Power BI solutions remotely for UK healthcare and operations clients. That's the standard I bring here, whether the contract is $200 or $5,000. HOW I WORK I ask questions before I quote — usually about where your data actually lives, how often it needs to refresh, and who's going to open the report. You'll get a scoped plan, a fixed price wherever the scope allows one, and a short update at the end of every working day. I reply within four hours during business hours and overlap comfortably with European mornings and US mornings. ALSO AVAILABLE AI-assisted reporting workflows — n8n automations, OpenAI-generated summaries, and conversational query layers built on top of an existing BI model. Worth asking about if it's relevant to your project, though the reporting foundation always comes first. START HERE If you have a Power BI report that's slow, wrong, or that nobody opens — send me the PBIX or a screenshot of the model view. I'll tell you what's wrong with it before you pay me anything.