Olena Kolesnyk
Junior Data Analyst
Vinnytsia, Vinnytsia Oblast, Ukraine
Summary
🤩
Rockstar🎓
Top SchoolOlena Kolesnyk is a Junior Data Analyst with nine years of professional experience and a master’s degree in finance, combining deep accounting expertise from 15+ years in a large government agency with recent training at an IT school. She leverages strong analytical thinking and a knack for spotting connections to automate processes, improve business outcomes, and support data-driven decisions. Currently contributing to GoIT and Changers.education, Olena applies statistical methods and practical analytics tools to streamline workflows and surface actionable insights. Her GitHub work includes QA and backend testing contributions to the well-known OrientDB project, demonstrating disciplined unit testing and a focus on maintainable, high-coverage code. Comfortable bridging finance and engineering domains, she brings a rare blend of domain knowledge, process automation experience, and hands-on QA rigor to early-stage analytics roles.
9 years of coding experience
Магістр, Фінанси, Магістр, Фінанси at Державний торговельно-економічний університет
English, Українська
Github Skills (19)
testing10
java10
javas10
automation10
junit10
automations10
test-automation10
sql9
database8
dbms8
document-database8
dbm8
databases8
nosql7
admin7
Programming languages (1)
Github contributions (5)
orientechnologies/orientdb
Jul 2017 - Aug 2017
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.
Role in this project:
Backend & QA Engineer
Backend & QA EngineerContributions:10 commits, 3 PRs, 6 pushes in 12 days
Contributions summary:Olena primarily contributed to testing and quality assurance within the OrientDB repository. Their work focused on creating and implementing unit tests for various components, specifically those related to SQL execution steps and database operations. This included writing tests for class and index counting, as well as verifying the behavior of record type and safe delete functionalities. Furthermore, the user refactored and parametrized existing tests for improved coverage and maintainability.
dbmsrdbmsindexingrelational-databasesreactive
arkolesnik/orientdb-automation-transactions
Aug 2017 - Sep 2017
Contributions:17 commits, 15 pushes, 4 branches in 20 days
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