Kseniia Samarina
Angestellt, Big Data Engineer, VK
Über mich
• Data Engineer with 3+ years of experience, seeking for full-time Data Engineer, Software Engineer roles. • I have a broad outlook in technologies and tools due to work experience and study. • Always open to new experience and knowledge. • Interested in Big Data and Distributed Systems.
Werdegang
Berufserfahrung von Kseniia Samarina
Bis heute 1 Jahr und 9 Monate, seit Sep. 2022
Big Data Engineer
VK
Worked at Russian social network Odnoklassniki. • Created Data Detail Store for video events log data and migrated about 10 data pipelines to this data source; • Wrote more than 15 complex ETL-pipelines with custom transformations using Apache Spark's Java API; • Integrated with several data sources: MySQL, ClickHouse, hdfs; • Researched and verified data with Spark SQL and DataFrame API using Apache Zeppelin. Technologies: Java, Apache Spark, hdfs, hive, ClickHouse, Apache Zeppelin.
6 Monate, Jan. 2022 - Juni 2022
Data Engineer
SEMrush
Worked on Traffic Analytics: tool to benchmark your website traffic against competitors. • Migrated Scala written clickstream data parser into Java using Apache Spark’s Java API. • Performed clickstream data validation with analytical metrics calculation and statistical hypothesis testing in Jupyter Lab. • Created about 5 new ETL-pipelines in Python with Luigi. Technologies: Python, Java, Apache Spark, ClickHouse, numpy, pandas, GCP.
1 Jahr und 8 Monate, Feb. 2020 - Sep. 2021
Data Analyst
Karuna
Worked at huge Fintech project. • Created BI-reports using Tableau. Reduced reports rendering time from minutes to seconds; • Developed new Data Marts with Apache Airflow using multiple data sources: Vertica, PostgreSQL, ClickHouse; • Wrote and optimized complex analytical SQL queries; • Performed data preprocessing and statistical hypothesis testing in Jupyter Lab with Python packages: numpy, pandas, statsmodels. Technologies: Python, SQL, Apache Airflow, Tableau, Vertica, PostgreSQL, ClickHouse.
Sprachen
Deutsch
Grundlagen
Russisch
Muttersprache
Englisch
Fließend