Selin S.

I clean, structure, and validate messy data so you can trust your spreadsheets and make confident decisions. With 5+ years of hands-on experience in data management — from raw data entry to large-scale dataset operations at a market research company — I've worked with the kinds of messy, real-world data that breaks formulas and confuses reports. What I deliver: — Deduplication, standardization, and formatting (dates, names, currencies, phone numbers) — Cross-checking and validating data across multiple sheets and sources — Structuring raw exports into clean, filterable, analysis-ready tables — VLOOKUP, INDEX-MATCH, pivot tables, and conditional formatting for quick insights My background in marketing science means I don't just clean data mechanically — I understand why data quality matters for the analysis that comes after. I catch inconsistencies that a generic data entry worker would miss. Tools: Microsoft Excel, Google Sheets, SPSS Clear communication, on-time delivery, no assumptions — I flag issues before they become problems. #DataCleaning #Excel #GoogleSheets #DataFormatting #DataValidation