Raha K.

I help businesses clean up their data, automate reporting, and build dashboards and forecasts that answer practical questions about sales, customers, and performance. My main tools are Python, SQL, Excel, and Power BI. I’m a Top Rated freelancer with 6+ years of experience and a background in mathematics and economics. I work directly with business owners, finance teams, and researchers who need someone to understand the problem, check the numbers, and explain the findings clearly. Some examples of my work: • Built demand forecasts for approximately 1,400 Shopify products, with weekly forecasts and reorder recommendations delivered in Excel. • Developed a Power BI portfolio analytics dashboard connected to Azure SQL, with automated updates for returns, risk, and sector exposure. • Built a Python and DuckDB workflow that processed 483.9 million records and produced a validated analytical dataset of 395.9 million records. • Created an invoice and receipt extraction workflow for a bookkeeping firm handling approximately 3,000 documents per month, with uncertain results flagged for review. I can help with a one-off analysis, an existing spreadsheet or dashboard that needs fixing, or a recurring reporting process. My work also includes customer segmentation, predictive modeling, statistical analysis, and evaluating the accuracy of AI-generated answers. I start by understanding the question you need answered and checking whether the data can support it. Throughout the project, I explain the important decisions, flag problems early, and keep the work organized so you can use and maintain it afterward. Depending on your project, you’ll receive cleaned data, reusable code, a dashboard or report, and a clear explanation of what the results mean. Tools: Python, SQL, Power BI, Excel, R, pandas, scikit-learn, DuckDB, Azure, and Databricks. Send me a brief description of what you’re working on and where you’re getting stuck. I’ll suggest a practical scope and approach.