A Comprehensive Guide to Landing an Epic Marketing Internship
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Karol Andruszkow
Co-founder and CEO of Concept21

A Comprehensive Guide to Landing an Epic Marketing Internship

April 24, 2025
Corporate Marketing: Propel Your Business to The Top
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Karol Andruszkow
Co-founder and CEO of Concept21

Corporate Marketing: Propel Your Business to The Top

April 24, 2025
Storytelling Framework: Captivate, Connect, and Conquer!
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Karol Andruszkow
Co-founder and CEO of Concept21

Storytelling Framework: Captivate, Connect, and Conquer!

April 24, 2025
Brands for Change: When Social Activism Meets Marketing
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Karol Andruszkow
Co-founder and CEO of Concept21

Brands for Change: When Social Activism Meets Marketing

April 24, 2025
Building Your Brand: The Power of E-Commerce Branding
hnrBlogAuthors_image
Karol Andruszkow
Co-founder and CEO of Concept21

Building Your Brand: The Power of E-Commerce Branding

April 24, 2025
Unlocking Business Growth: Full Guide To Growth Marketing
hnrBlogAuthors_image
Karol Andruszkow
Co-founder and CEO of Concept21

Unlocking Business Growth: Full Guide To Growth Marketing

April 24, 2025
Karol Andruszkow
Co-founder and CEO of Concept21
Karol is a serial entrepreneur, e-commerce speaker, and founder of 3 startups. He advised hundreds of companies and was responsible for projects worth over EUR 50 million for financial institutions in Europe.

​He earned two master's degrees - Computer Science and Marketing Management - from Poland and Portugal. He has over ten years of experience in Silicon Valley, Poland, Portugal, USA, and UK, helping startups, financial institutions, and SMEs improve their functioning through digitization.