Oleksii Vykaliuk
Senior Data Engineer
Vienna, Austria
Summary
👤
Senior🎓
Top SchoolOleksii Vykaliuk is a Senior Data Engineer based in Vienna with 14 years of experience building data-driven systems and backend services. He combines a strong mathematics background (MSc, Taras Shevchenko National University) with hands-on Python/Django and Flask expertise gained across startups and product companies. Oleksii has shipped production data platforms and API logic at companies like People.ai, Utopia Music and Freshflow, often focusing on reliable dependency management and data handling. He contributes to notable open-source Python projects—improving Flask-Restless core behavior and extending pip-tools with pragmatic flags—demonstrating care for developer ergonomics and compatibility. His special interest in geospatial data informs his engineering choices, blending spatial thinking with scalable ETL and API design. Colleagues rely on him for pragmatic, well-tested solutions that bridge data engineering and backend development.
14 years of coding experience
10 years of employment as a software developer
Master's degree Mathematics, Master's degree Mathematics at Taras Shevchenko National University of Kyiv
English, Ukrainian
Stackoverflow
71reputation
75kreached
2answers
0questions
Github Skills (22)
api-rest10
pip-tools10
python10
apidoc10
api-design10
restful-api10
pip-compile10
flask-ask10
api10
sqlalchemy10
rest-api10
flask10
packaging9
pip8
setuptools8
Programming languages (12)
Github contributions (5)
jfinkels/flask-restless
Apr 2012 - Apr 2012
A Flask extension for creating simple ReSTful JSON APIs from SQLAlchemy models.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 commits in 13 days
Contributions summary:Oleksii primarily contributed to the backend of the Flask-Restless project, making changes to core functionalities. They updated the `setup.py` file, and modified the views and helpers files, adding and refactoring various functionalities like the inclusion of columns and handling validation exceptions. The contributions also included addressing Python 2.5 compatibility issues and correcting a typo in the documentation. The changes focused on API logic and data handling within the Flask framework.
pythonsqlalchemy-modelsblueprintsqlalchemyflask-api
jazzband/pip-tools
Jul 2016 - Jul 2016
A set of tools to keep your pinned Python dependencies fresh.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 1 PR, 2 comments in 1 day
Contributions summary:Oleksii primarily focused on enhancing the `pip-tools` project by adding and refining features related to pinning dependencies. Their work included implementing an `--allow-unsafe` flag, which modified the behavior of how the tool handles potentially unsafe packages. Additionally, the user addressed a failing test introduced by these changes and also performed code style fixes.
dependenciespythonkeeplockfilepip
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