about author
EFFECTIVE DATE: August 11, 2025

Sergii Klius
Co-founder, Chief Executive Officer
Sergii is Co-Founder & CEO at DataOx with nearly 20 years of experience in IT. For more than 11 years, he have been leading a technology company focused on web scraping, automation, and custom data solutions. His background includes hands-on software development in Java, ActionScript, and Python, as well as building teams, processes, and scalable delivery systems for international clients.
LIST OF AUTHOR'S ARTICLES

# Data Collection
# Web Scraping
Scrape Email from Website: 3 Methods & Best Sources

Sergii
9 min read
Find the best tool or method to scrape address and contact details. Learn where to get addresses for lead generation. Consult DataOx experts.
Published:
Apr 23. 2023
Updated:
Jul 17. 2026

# Data Collection
# Web Scraping
Importance of Understanding the Differences Between Surface Web vs Deep Web vs Dark Web

Sergii
8 min read
Read this post and learn about the difference between the surface web vs deep web vs dark web on the DataOx blog.
Published:
Apr 23. 2023
Updated:
Apr 23. 2026

# Data Collection
# E-commerce
# Web Scraping
Scraping Chinese Ecommerce Sites: Benefits & Challenges

Sergii
18 min read
Learn why web scraping is ideal for product data extraction from e-commerce platforms. Consult DataOx on how to scrape Chinese web.
Published:
Apr 23. 2023
Updated:
Jun 26. 2026

# Data Collection
# Python
# Web Scraping
How to Scrape Yelp Data in Python: Tools, Steps & Use Cases

Sergii
14 min read
Scraping Yelp can be a helpful tool for businesses to gather information on their competitors, as well as for data analysts looking to study consumers' interests. Learn more on DataOx blog.
Published:
Apr 23. 2023
Updated:
Aug 18. 2026

# Data Collection
# Finance
# Web Scraping
Scrape Yahoo Finance with Python and BeautifulSoup: All You Need to Know

Sergii
16 min read
Financial data was always one of the most valuable data in the market. If you make a proper analysis, you will have a 100% chance to solve your organization’s financial issues and grow your business. Reveal what Yahoo Finance is, why to scrape financial data, and how to download data from Yahoo Finance with Python on DataOx blog.
Published:
Apr 23. 2023
Updated:
Aug 18. 2026

# Data Collection
# Web Scraping
Advanced Web Scraping: Protected & Large-Scale Sites

Sergii
11 min read
“Complex” web sources scraping is a challenge. Consult DataOx! Know how they can be scraped, what workarounds we develop to deal with large, protected, “weak” or old sites.
Published:
Apr 23. 2023
Updated:
Aug 14. 2026
