Data Scientist
lena.tashkevych@gmail.com
linkedin.com/in/lena-tashkevych
INNOVATION DATA SCIENTIST
ROOM8 | SAN FRANCISCO, CA | 2018 – present
Creating processes to utilize data effectively for everyday operations at seed-stage roommate matching / renters insurance startup.
Using python, SQL, R, and Periscope.
PRODUCT DATA SCIENTIST
CELTRA | SAN FRANCISCO, CA | 2015 – 2018
- Worked closely with engineering and product teams to research and test new product offerings.
- Extracted data sets from billions-per-day event logs using Spark / Scala, as well as from thousand-attribute unstructured json blurbs.
- Designed, created and populated SQL databases for commonly-used external data.
MACHINE LEARNING RESEARCHER
IPVIVE | EMERYVILLE, CA | 2015 – 2016
Researched algorithm for summarizing speech and emotion vectors by “folding” multi-dimensional text-vector space.
(patent application http://pdfaiw.uspto.gov/.aiw?docid=20170011309 )
MACHINE LEARNING ENGINEER
ROBERT HALF, MACHINE LEARNING TEAM | 2013 – 2015
Built ML-driven pilot projects from the ground up for various branches of 65-year-old recruiting company.
- Improved resume to job description match rate in pilot program 4x (by changing algorithms, reducing overfitting, and cleaning data).
- Analyzed job descriptions using Stanford NLP scripts for features that had a positive effect on application numbers.
- Assembled and manipulated large (75mill row x 7k column) datasets in Hadoop/Hive.
SOFTWARE ENGINEERING INTERN
ROBERT HALF, MARKETING AND COMMUNICATIONS | 2009 – 2013
- Reverse-engineered and documented complex search application (Elise-based search in Java and Flex)
- Set up Splunk-based near-realtime detection of enterprise app issues.
- Created dashboards to detect fraud in Apache website traffic logs.
EDUCATION
B.A. MATHEMATICS – University of California, Santa Cruz
INTERESTS
Reading, learning new languages, travel, social ballroom dancing.
SKILLS
SQL, R, Scala, python, Spark, Tableau, QlikView, Periscope.
English, Russian, intermediate Ukrainian and French, beginning Mandarin and German.
Download my resume here