Built end-to-end international cold outreach system covering 20,000+ verified contacts across US/Europe/Asia, achieving 40%+ open rate with 80% process automation through integrated workflow (Google Sheets automation, Mailchimp, Hotjar analytics). Established AI system quality evaluation framework for audio processing pipeline using LLM-as-Judge and batch API optimization across 30+ iterations. Developed AI-powered invoice automation using OpenAI Assistants API, reducing monthly expense reporting time from several hours to ~30 minutes (≈90% time savings). Collaborated with French supervisor on international market research and exhibition preparation, coordinating visual design, website content management, and digital marketing campaigns.

Coordinated Vitafoods Asia 2022 (Bangkok) exhibition project managing logistics and vendor communications in English with Thai exhibition agency; designed promotional materials with Adobe Illustrator/Photoshop. Served as booth representative engaging international buyers in English, improved business English proficiency through intensive study and tutoring. Gained technical product expertise via hands-on manufacturing experience, enabling confident technical responses and receiving commendation for presentation delivery.