A Comprehensive Guide to Landing an Epic Marketing Internship

April 24, 2025
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A woman in front of charts and a rocket taking off
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Karol Andruszkow
Co-founder and CEO of Concept21

Corporate Marketing: Propel Your Business to The Top

Discover enterprise marketing secrets—brand building, stakeholder engagement, B2B outreach, and performance tracking to elevate your business.
April 24, 2025
A girl with a piece of paper with a drawing of the earth and a megaphone
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Karol Andruszkow
Co-founder and CEO of Concept21

Brands for Change: When Social Activism Meets Marketing

Discover the game-changing potential of social activism in marketing. Build brand loyalty, spark community engagement, and drive positive impact.
April 24, 2025
Businessman climbing a rising graph
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Karol Andruszkow
Co-founder and CEO of Concept21

Unlocking Business Growth: Full Guide To Growth Marketing

Learn the latest growth marketing hacks, strategies, and tips to skyrocket your sales and take your business to the next level!
April 24, 2025
Megaphone placed on a technical machine
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Karol Andruszkow
Co-founder and CEO of Concept21

Everything About Technical Marketing

What is technical marketing and why does it matter? Learn how to bridge the gap between product, tech, and sales with strategies that actually convert.
April 24, 2025
Funnel with diamonds next to the checklist
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Karol Andruszkow
Co-founder and CEO of Concept21

Best Practices for Generating High-Quality Leads

Discover proven strategies for generating high-quality leads and learn how to optimize your lead-generation process for maximum success!
April 23, 2025
Medicine bottle with the word
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Karol Andruszkow
Co-founder and CEO of Concept21

Marketing Your Pharmacy: A Prescription for Success

Discover the secrets of pharmaceutical marketing and learn the strategies and tactics you need to succeed in the competitive world of pharmacy ownership!
April 23, 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.
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