Kelvin w.

Most costly mistakes aren’t big failures. They’re a wrong price in an ad, an unsupported claim in a report, or an AI answer that sounds right and isn’t. I find those errors before they reach customers, campaigns, or decisions. 2,374+ hours and $10K+ earned on Upwork, working across creative QA, AI output verification, fact-checking, and data quality. CREATIVE & MARKETING QA I check ads, designs, and marketing materials against approved briefs and source documents before they go live. • Compare Figma designs against Google Docs briefs line by line • Verify copy, product names, pricing, discounts, and promo terms • Check images, CTAs, and formatting against approved references • Flag missing information and separate quick fixes from issues that need escalation AI OUTPUT VERIFICATION & LLM EVALUATION I assess AI-generated content for factual accuracy, unsupported claims, and compliance risks. • Verify claims against reliable, authoritative sources • Check whether responses follow the instructions and criteria given • Document findings and flag unclear cases instead of guessing FACT-CHECKING, RESEARCH & DATA QA I verify statistics, dates, names, figures, and product details against primary, government, regulatory, and company sources, and I cross-check documents and datasets for duplicates, gaps, and conflicting records. • Clear findings with source references and traceable audit notes • Practical corrections, not just a list of problems • Experience with financial statements, SEC 10-K reports, and balance sheets DOCUMENT ANNOTATION & DATA LABELING I apply written guidelines consistently when labeling documents and structured data, including in HTML-based tools, and I flag ambiguous cases rather than guess. TOOLS Figma, Google Docs and Sheets, Microsoft Excel and Office, PostgreSQL, MySQL, Trello, HTML and structured data, basic Jupyter Notebook HOW I WORK • Accuracy: I verify before I accept • Evidence: every finding comes with its source • Judgment: I escalate what can’t be confirmed confidently • Communication: short, clear notes you can act on right away If you need someone who catches what others miss and documents it clearly, send me a sample task and I’ll show you how I work.