Building Your Brand: The Power of E-Commerce Branding

April 24, 2025
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Karol Andruszkow
Co-founder and CEO of Concept21

Drive Your Event Attendance Up with Our Expert SEO Guide

With tips to optimize your content, build links, and do keyword research, this guide is your ticket to higher event attendance and greater brand awareness!
April 24, 2025
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hnrBlogAuthors_image
Karol Andruszkow
Co-founder and CEO of Concept21

Sell Your Passion with Gumroad: Beginner Guide

Discover how Gumroad enables creators to sell their products and services directly to their customers. Get to know if this platform is for you!
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.
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