antonios kokkalis

I am an experienced Greek Language Specialist and AI Trainer with hands-on practice in data annotation, transcription, and linguistic quality assurance. I have contributed to improving large language models by producing high-accuracy labeled datasets and providing consistent, actionable feedback on grammar, fluency, factual accuracy, and cultural relevance. Comfortable working with international remote teams, I apply tools such as Label Studio and Diffgram and pair linguistic expertise with practical web and SEO experience from running a travel site and managing digital campaigns. My background across customer support, sales, market analysis and programming gives me a cross-functional perspective that enhances data quality and model outcomes.