Dimitris Kotsakos
Senior Engineering Manager at HOW
Attica, Greece
Summary
🤩
Rockstar🎓
Top SchoolDimitris Kotsakos is a Senior Engineering Manager with 11 years of experience leading machine learning and user-focused engineering teams, currently heading the Machine Learning Core team at Elastic and co-founding HOW. He combines deep academic training (PhD in Data Mining) with hands-on product delivery across high-scale environments at Twitter, Skroutz and Workable, tackling recommendation, personalization and trending-topic challenges. Dimitris has a track record of translating research into production—building fusion systems for candidate sourcing, redesigning review flows to triple submissions, and refactoring streaming statistics for trending computation. Comfortable across Java, Python, Ruby on Rails and search stacks, he blends technical depth with product-minded experimentation (A/B and usability testing). Colleagues describe him as a leader who moves teams from prototype to robust, measurable systems while keeping an eye for subtle UX and data-driven levers that boost engagement.
11 years of coding experience
11 years of employment as a software developer
Doctor of Philosophy - PhD Data Mining, Doctor of Philosophy - PhD Data Mining at National and Kapodistrian University of AthensAbitur, Abitur at Deutsche Schule Athen
German, English, Greek
Github Skills (32)
search-engine10
opensearch10
observability10
kibana10
java10
restful10
time-series-forecasting10
elasticsearch10
elastic10
visualizations10
python-client9
cpp8
eland8
machine-learning8
dataframe8
Programming languages (6)
Github contributions (5)
wedohow/wedohow.com
Jan 2023 - Feb 2024
Contributions:2 PRs, 106 pushes, 2 branches in 1 year 1 month
dimkots/elasticsearch
Mar 2023 - Mar 2025
Free and Open, Distributed, RESTful Search Engine
Contributions:4 pushes, 2 branches in 2 years
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