Jan Hartman
Senior Machine Learning Engineer at Sourcegraph
Ljubljana, Slovenia
Summary
🤩
Rockstar🎓
Top SchoolJan Hartman is a Senior Machine Learning Engineer with a decade of experience building high-performance ML systems, particularly in adtech where he scaled models to deliver over a billion predictions per second. He specializes in production ML at scale—covering feature engineering, training, inference infrastructure, and online learning pipelines that run on terabytes daily with sub-100ms latencies. At Sourcegraph he led work on AI code understanding, retrieval and synthetic-evaluation tooling, while at Outbrain he drove revenue-impacting deep learning recommender and bidding systems and migrated large pipelines from cloud to cost-efficient on-premise stacks. Comfortable across Python, TensorFlow, Golang and distributed data platforms, he bridges research and production and mentors teams on high-performance ML. Based in Ljubljana with an MS in Computer and Data Science, he combines rigorous academic training with a pragmatic focus on measurable business outcomes.
10 years of coding experience
9 years of employment as a software developer
Master's degree Computer and Data Science, Master's degree Computer and Data Science at University of Ljubljana, Faculty of Computer and Information ScienceMatura exam High School/Secondary Diplomas and Certificates, Matura exam High School/Secondary Diplomas and Certificates at Gimnazija Kočevje
English, Slovenian
Stackoverflow
1reputation
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Github Skills (85)
python10
sourcegraph10
deep-learning10
code-search10
editor10
ml10
trigrams10
ai10
intellij-plugin10
neural-network10
electron10
typescript10
vscode-extension10
tensorflow10
code-intelligence10
Programming languages (9)
Github contributions (5)
janhartman/tomazhartman.si
Sep 2018 - Dec 2024
Contributions:5 pushes in 6 years 4 months
janhartman/prev
Feb 2017 - Jun 2017
Contributions:100 commits in 3 months
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