Christos Mantas
Senior Machine Learning Engineer at TestGorilla
Athens, Attica, Greece
Summary
👤
Senior🎓
Top SchoolChristos Mantas is a Senior Machine Learning Engineer with 11 years' experience building large-scale search, recommendation, and ML systems across startups and social platforms, now based in Athens. He specializes in NLP, retrieval-augmented generation, vector search for multimodal data, and backend big-data engineering, with hands-on Vectors/ES indexing, Spark pipelines and Airflow integrations. At Tumblr and Skroutz he combined rigorous A/B experimentation and statistics with production-grade engineering to improve ranking and discovery for millions of queries daily. A former PhD researcher in cloud resource management, he brings strong systems thinking and a passion for clean, testable code and bias-aware analysis. Colleagues would note his unusual mix of product-minded tech leadership and deep interest in cognitive biases that inform how models are evaluated and shipped.
11 years of coding experience
5 years of employment as a software developer
Bachelor's degree, Computer Science, 73%, Bachelor's degree, Computer Science, 73% at Athens University of Economics and Businesshigh school diploma, high school diploma at Athens College – Hellenic American Education FoundationUniversity College London
English, German, Greek
Github Skills (61)
pytorch10
python10
data-science10
machine-learning10
deep-learning10
tensorflow10
stemming9
neural-network9
jax9
rack9
trend8
smartphone8
redis7
elasticsearch-plugin7
rails7
Programming languages (10)
Github contributions (5)
cmantas/asap.cslab
Jan 2015 - Feb 2016
Contributions:178 pushes in 1 year 1 month
skroutz/greek_stemmer
Sep 2016 - May 2019
A simple Greek stemming library
Contributions:2 reviews, 10 commits, 8 PRs in 2 years 8 months
stemming
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