Katherine S.

Hi, I’m Katherine (“Kathy”) 👋, a bilingual data professional fluent in English, Spanish, and some Portuguese, with a Master’s in Business Analytics and over 5 years of experience in diverse freelance projects. I specialize in transforming complex data into reliable, actionable insights through data validation, AI training, testing, and market research. Why Hire Me? ⭐ Consistently rated 5 stars on all completed projects 🤝 100% Job Success on Upwork 🤖 Expertise in AI data annotation, quality assurance, and model output review 📊 Proficient in SaaS data cataloging, process automation, and data quality frameworks 🔧 Tech-savvy with a wide range of analytics, research, and project management tools What I Do: Data Annotation & Validation: Image, text, and SaaS data labeling for AI/ML workflows Testing & QA: Bot testing, workflow evaluation, and AI output accuracy review Market Research & Insights: Competitive analysis, trend tracking, and SaaS market mapping Data Management & Virtual Assistance: Data cleaning, organization, and performance tracking Content & Language Support: Translation, localization, and bilingual communication (EN/ES/PT) Digital Marketing Support: WordPress, Substack, Mailchimp, Meta Ads Manager, Hootsuite Tools I Use: Python 🐍 | Excel 📈 | Tableau 📊 | Power Query | RStudio | SPSS | SQL | Jupyter | Notion | Trello | Asana | Slack | Figma (UX testing) | Looker Studio | Google Workspace | Social Blade | Hootsuite | Buffer | Sprout Social | Google Trends Education: 🎓 MS in Business Analytics — National University of Ireland, Galway 🎓 Bachelor’s in Business Administration — Universidad Austral de Chile Languages: Spanish – Native English – Fluent Portuguese – Intermediate Why Work With Me: I bring analytical precision and strong organizational skills to every project. Whether improving AI workflows, validating large datasets, or supporting back-office processes, I ensure structure, insight, and consistency. My clients trust me to deliver clear results that align with their strategic goals.