English:
Advanced
Kostiantyn K.
Vetted by YouTeam
Ukraine
UTC +02:00
Ukraine/Kyiv
English:
Advanced
Data Engineer with essential ETL development experience
● Built integrations in Python to extract data from 20+ external APIs (REST, GraphQL, and SFTP) for a fast-growing data platform that was used by 500+ clients to optimize their advertising campaigns. ● Designed a Python application to enable non-developers to create and configure batch ETL pipelines. ● Maintained adtech-related ETL pipelines in Python, SQL, R to ensure data correctness, increase throughput, and enhance pipeline reliability. ● Participated in ETL pipeline development for a market-research project for a Western bank. ● Sped up a financial data processing Python script from 6 hours to 6 minutes for an Asian client. ● Performed applied economic research based on quantitative (econometric) methods.
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Check if Kostiantyn is availableExpertise
Years of commercial development experience
4 years of experience
Core technologies
Other technologies
Project Highlights
WINDSOR.AI
May `18 - Jun `21
3 years
Marketing data company
Multi-touch marketing attribution software
Responsibilities & achievements
Built integrations in Python to extract data from 20+ external APIs (REST, GraphQL, SFTP) for a fast-growing data platform that was used by 500+ clients to optimize their advertising campaigns. Designed a Python application to enable non-developers to create and configure batch ETL pipelines. Maintained adtech-related ETL pipelines in Python, SQL, R to ensure data correctness, increase throughput, and enhance pipeline reliability. Performed code review on a permanent basis
Freelance
Nov `16 - May `18
1 year
E-commerce clients
Data scraping and parsing
Responsibilities & achievements
Scraped and parsed data for e-commerce clients using Python and Java. Participated in ETL pipeline development for a market-research project for a Western bank. Sped up a financial data processing Python script from 6 hours to 6 minutes for an Asian client.
INSTITUTE FOR ECONOMIC RESEARCH AND POLICY CONSULTING
Nov `12 - Jun `16
4 years
Economic research
Responsibilities & achievements
● Performed applied economic research based on quantitative (econometric) methods. ● Wrote scripts for data extraction and analysis in R, Stata.
Education
Higher education in Computer Science
Agency
100-400
GMT+3
Dnipro, Kyiv/Ukraine, New York/USA
Core Expertise
Industries
Education & Science, Information services & Technologies, Social Media & Communication, Healthcare & Medicine, Data Science & Machine Learning, Big Data, Automotive
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Check if Kostiantyn is available