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EFFECTIVE DATE: August 11, 2025

web scraping expert & CEO DataOx

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

Scrape Email from Website: 3 Methods & Best Sources

# Data Collection

# Web Scraping

Scrape Email from Website: 3 Methods & Best Sources

Sergii

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.

Importance of Understanding the Differences Between Surface Web vs Deep Web vs Dark Web

# Data Collection

# Web Scraping

Importance of Understanding the Differences Between Surface Web vs Deep Web vs Dark Web

Sergii

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.

Scraping Chinese Ecommerce Sites: Benefits & Challenges

# Data Collection

# E-commerce

# Web Scraping

Scraping Chinese Ecommerce Sites: Benefits & Challenges

Sergii

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.

How to Scrape Yelp Data in Python: Tools, Steps & Use Cases

# Data Collection

# Python

# Web Scraping

How to Scrape Yelp Data in Python: Tools, Steps & Use Cases

Sergii

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.

Scrape Yahoo Finance with Python and BeautifulSoup: All You Need to Know

# Data Collection

# Finance

# Web Scraping

Scrape Yahoo Finance with Python and BeautifulSoup: All You Need to Know

Sergii

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.

Advanced Web Scraping: Protected & Large-Scale Sites

# Data Collection

# Web Scraping

Advanced Web Scraping: Protected & Large-Scale Sites

Sergii

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.

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