Konstantinos Giantsios
Machine Learning Engineer at Kaizen Gaming
Thessaloniki, Macedonia and Thrace, Greece
Summary
👤
Senior🎓
Top SchoolKonstantinos Giantsios is a Machine Learning Engineer based in Thessaloniki with 8 years of software experience and 5+ years focused on NLP and recommender systems. He holds an MSc in Data and Web Science and has built end-to-end ML products—from taxonomy and automated text tagging to real-time user profiling, content-based embeddings, and RAG pipelines—working with PyTorch/TensorFlow, Hugging Face and modern MLOps tooling. At Atypon he shipped production semantic search, abstractive summarization for academic papers, and an evaluation framework for recommenders; his freelance work includes an influencer search engine and automated headshot generation. Recently he combined full-stack development for operational systems in the Greek Army with a transition to Kaizen Gaming, reflecting a pragmatic, production-first approach to ML engineering. Notably, he pairs deep representation learning expertise with hands-on systems experience in streaming, retrieval, and LLM orchestration.
8 years of coding experience
5 years of employment as a software developer
Master's degree Data and Web Science, Master's degree Data and Web Science at Aristotle University of Thessaloniki (AUTH)Bachelor's degree Applied Informatics, Bachelor's degree Applied Informatics at University of Macedonia
English, German, Greek
Github Skills (35)
java10
batch10
streaming10
beam9
python9
sql9
golang9
data-processing8
apache8
big-data8
streaming-data8
apache-beam7
lua6
kd-tree6
keyword6
Programming languages (5)
Github contributions (5)
CoGian/MyDoctor
Apr 2018 - Jun 2018
Contributions:5 releases, 22 commits, 4 PRs in 2 months
appointmentsoperationstatisticsmacedoniadepartment
CoGian/spark-in-practise
Oct 2020 - Mar 2025
Contributions:8 pushes, 1 branch in 4 years 5 months
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