I will clean, transform, and prepare your data using excel, power query and m language
BI Expert, Power BI Developer, Data Visualization Specialist
About this Gig
Are you wasting hours trying to fix messy spreadsheets, inconsistent formats, and broken data? Dirty data leads to inaccurate reports, flawed business decisions, and wasted time. As a Business Intelligence and Data Cleaning expert, I will transform your raw, unstructured files into clean, structured, and ready-to-use datasets.
Whether you are preparing data for a Power BI dashboard, an Excel model, or a database, I use advanced Power Query and M Language techniques to automate your data wrangling and ensure pristine accuracy.
What I Can Do For You:
- Data Cleansing: Remove duplicates, handle missing values, trim spaces, and fix formatting errors.
- Data Transformation: Reshape data, unpivot columns, split text, and merge multiple disparate files or sheets.
- Advanced M Language Scripting: Write custom Power Query M code for complex, repetitive data transformation logic.
- Automated Data Workflows: Set up repeatable query steps so your data cleaning updates automatically with a single refresh.
- Error Handling: Resolve data type errors and troubleshoot failed query steps safely.
FAQ
What do you need from me to get started?
Your raw data files (Excel, CSV, SQL exports, etc.) and a clear explanation of how you want the final clean data to look.
Can you automate the cleaning process so I don't have to do it next time?
Yes! Every Power Query solution I build is repeatable. When your source data updates, you just hit "Refresh," and the cleaning steps run automatically.
What tools do you use for data cleaning?
I specialize in Power BI Power Query and the underlying M programming language, as well as advanced Excel tools.
Can you combine multiple Excel sheets or files into one?
Absolutely! I frequently build workflows that consolidate dozens of separate monthly or regional files into a single master dataset instantly.

