Nikolai Liubimov
Chief Technology Officer at HumanSignal
United States
Summary
🤩
Rockstar🎓
Top SchoolNikolai Liubimov is a CTO and co-founder with 12+ years building ML-driven products and infrastructure, combining a PhD-level research background in applied mathematics with hands-on engineering. He has led core backend work for production speech and dialogue systems at Yandex and contributed significant backend features to the popular open-source Label Studio project, improving data converters, APIs and task management. At HumanSignal/Heartex he translates research insights about human–AI interaction into tooling that helps data science teams scale annotation and dataset workflows. His career spans startups and large industry R&D—from speech and music ML to bioinformatics—giving him a rare fluency across models, data pipelines, and productization. Known for shifting teams from prototypes to production, he blends academic rigor with pragmatic engineering and a founder’s focus on impact.
12 years of coding experience
12 years of employment as a software developer
Lomonosov Moscow State University
English, French
Stackoverflow
76reputation
8kreached
3answers
1question
Github Skills (18)
data-labeling10
back-end-development10
apidoc10
python10
api10
data-processing10
annotations9
json9
annotation-processing9
annotate9
database-design8
sql8
keras6
lstm6
tensorflow6
Programming languages (5)
Github contributions (5)
HumanSignal/label-studio
Aug 2019 - Jan 2023
Label Studio is a multi-type data labeling and annotation tool with standardized output format
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 releases, 553 reviews, 196 commits in 3 years 5 months
Contributions summary:Nikolai primarily contributed to the back-end functionality, making changes related to converters, database interactions, and API enhancements. Their work included adding new converters, modifying data structures, and implementing features such as CSV support and text uploads. These changes directly impacted the core logic for data processing and task management within the Label Studio environment. The commits also indicate they were involved in refactoring the user interface and improving the data management and display logic.
semantic-segmentationtext-annotationannotation-toolimage-classificationdata-labeling
HumanSignal/pyheartex
Mar 2019 - Jul 2021
Heartex Python SDK - Connect your own models to Heartex Data Labeling
Contributions:16 commits, 16 PRs, 104 pushes in 2 years 4 months
pythonsdklabelingsdk-pythondata-labeling
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