Excel Data Cleaning + Automation | Power Query Expert | 10+ Years in Analytics
Excel Data Cleaning + Automation | Power Query Expert | 10+ Years in Analytics
I help small businesses, large organizations, researchers, and scientists transform their Excel data into clear, actionable insights, so they can focus on what matters most.
With years of experience as a data analyst and BI developer, I specialize in cleaning messy data from legacy systems, preparing datasets for system migrations or upgrades, and streamlining complex spreadsheets. I build simple, repeatable workflows using Power Query and create macros to automate time-consuming tasks. My Power Pivot dashboards and charts deliver fast, visually compelling insights tailored to your needs. Whether you're modernizing outdated systems, integrating new tools, or uncovering trends, I make your data work for you.
I take you from a messy, unreliable, and chaotic data set...
...to a clean, structured, analysis-ready data set...
...with the exact views you need to make smart decisions fast...
...and sharp tables and charts that effectively communicate results...
...all built on a repeatable process that turns future messes into instant clarity.
I do all this with care, professionalism, and total respect for your time and your data. I meet deadlines, communicate clearly, and treat every project like it matters—because it does. Your data stays secure, fully confidential, and is never shared or submitted to AI tools or third parties. You can trust the process and the person behind it.
Here’s what people are saying about my work…
"You're amazing to work with—quick to respond, easy to talk to, and always willing to dig into any issue. Thank you!"
— S.R.
"Your automation and visualization work helped our department take a significant leap forward in modernizing our reporting."
— L.H.
"Thank you for your expertise on our latest project—it made a huge difference!"
— L.M.
If you're interested in working together, reach out to me at nickwarcholak@gmail.com to schedule a free 30-minute consultation. I offer competitive rates and special discounts for individuals and small businesses—because good data help shouldn’t break the bank.