Matej Cief
Applied Scientist at Amazon
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolMatej Cief is an Applied Scientist based in London with nine years of industry experience building production-grade ML systems and LLM agents, currently developing Amazon’s shopping assistant, Rufus. He completed a PhD focused on Off-Policy Evaluation and Optimization in Adaptive Systems under advisors from Adobe Research and KInIT, blending rigorous theory with practical deployment. His background spans machine learning engineering and full‑stack development across startups and enterprises (Swiss Re, AVITECH) and multiple Amazon internships that transitioned into a full‑time role. Comfortable moving models from research to product, he brings a rare mix of academic depth in sequential decision-making and hands-on experience shipping scalable AI features in real-world, high-traffic environments.
9 years of coding experience
4 years of employment as a software developer
Doctor of Philosophy - PhD, Machine Learning, Doctor of Philosophy - PhD, Machine Learning at Brno University of TechnologyMaster's degree, Information Technology, Master's degree, Information Technology at Faculty of Informatics and Information Technologies, Slovak University of Technology
Japanese, Slovak, English, German
Stackoverflow
181reputation
339kreached
2answers
1question
Github Skills (14)
izpack6
anaconda6
spring-data-jpa6
spring-boot6
spring-test6
docker4
vscode4
docker-container3
visual-studio-code3
ssh3
vscode-extension3
visual-studio3
remote-development2
devcontainer2
Programming languages (5)
Github contributions (5)
navarog/wingsearch
Sep 2020 - Nov 2022
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Contributions:15 reviews, 294 commits, 50 PRs in 2 years 2 months
navarog/School
Sep 2016 - May 2017
Contributions:20 pushes, 20 branches in 7 months
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