Chrysovalantisย Kontoulis
Senior AI Engineer at Stealth AI Startup
Thessaloniki, Macedonia and Thrace, Greece
Summary
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Top SchoolChrysovalantis Kontoulis is a Senior AI Engineer with eight years of hands-on experience designing and deploying LLM-driven RAG systems, conversational agents, and speech recognition models. He blends deep expertise in NLP, deep learning and time-series forecasting with practical skills in semantic search, vector stores, model evaluation and on-device deployment. His work spans research collaborations with industry leaders like Pfizer and Samsungโwhere he helped personalize encoder-decoder speech models trained on 400+ GB of audioโand production-focused implementations of FAQ co-pilots and recommendation engines. Comfortable across the ML lifecycle, he has delivered self-learning NLU/NER pipelines that measurably improved intent and entity performance and has a strong foundation in data quality, visualization and experiment-led development. Based in Thessaloniki, Greece, he pairs academic training in data & web science with startup experience, currently driving AI productization at a stealth AI company.
8 years of coding experience
5 years of employment as a software developer
Bachelor's degree, Informatics, 8.26, Bachelor's degree, Informatics, 8.26 at Informatics Aristotle University of Thessaloniki (AUTH)Master's degree, Data and Web Science, Master's degree, Data and Web Science at MSc Data and Web Science Aristotle University of Thessaloniki (AUTH)
English, GreekProgramming languages (2)
Github contributions (5)
valantiskon/Hate-Speech-Detection-WebApp
Jul 2020 - May 2022
Contributions:22 commits, 22 pushes, 1 branch in 1 year 10 months
intelligence-csd-auth-gr/keyphrase-extraction-via-summarization
Jul 2020 - Nov 2021
Contributions:81 commits, 32 pushes in 1 year 3 months
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