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Szymon and Jakub met at the university in 2017. While tackling student life and working on joint projects, they spotted a mutual desire to run a marketing agency together.
The idea wasn’t immediately obvious—they first wanted to identify gaps in the industry. That meant finding needs their company could address. This led to the creation of the strategic marketing agency: Sembility.
They’ve been meticulously building their expertise in the digital marketing field since 2015. This has resulted in working on over 1,000 projects, spanning SEO, lead generation, email marketing, paid campaigns (ads), and developing websites and e-commerces. Over the past 10 years, they’ve had the opportunity to collaborate with clients from 5 continents, operating in 4 foreign languages.
Their goal wasn’t to create just another marketing agency but to develop tangible solutions to their clients’ problems—not limited to Poland alone.
Jakub stands out for his technical approach to digital marketing and his deep understanding of problems from a technological perspective. Szymon approaches challenges from an advisory angle, combining technical knowledge with business experience. Together, they form a marketing agency focused on what matters most to clients: their business outcomes. They avoid proposing solutions that lack financial viability.
Besides work, Szymon immerses himself in learning Portuguese and Spanish and enjoys blogging, while Jakub, on the other hand, delves into Japanese studies and is a passionate fan of automotive trends and gaming.

Jakub Gierłowski

Co-founder & CTO

IT expert with many years of experience and a marketer with over 7 years of experience in the industry. Co-founder & CTO at Sembility. Passionate about innovation, strategy building, project management, and a technical approach to marketing. By combining technology with creativity, he has worked with hundreds of clients from various industries and conducted thousands of SEO audits. Outside of work, he develops his interests in learning Japanese, exploring Japanese culture, automotive trends, and gaming.

Simon Gorlak

Co-founder & COO

B2B Consultant and Marketer with nearly 10 years of experience. Co-founder & COO at Sembility. He has supported small and large companies from Poland, the USA, and even Mexico. Passionate about a scientific approach to marketing, strong Americano, and working with Students as a Lecturer. After hours, he speaks Spanish and Portuguese, trains in BJJ, and blogs about B2B marketing at simongorlak.com.

What our clients say about us

I never thought that my LinkedIn profile could make money. After starting cooperation with the guys from Sembility, in one month they generated 100% of the planned leads for me — and they do it regularly.
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Adam | CEO
Usługa: LinkedIn Lead Generation
After the first meeting, I knew that I’d cooperate with professionals. After 3 months, they increased my website’s position by 250% and reliably delivered services. I’ve cooperated with 4 other companies, but these guys are undoubtedly the best in the market.
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Rafał | Board Member
Usługa: SEO
Consulting with Sembility was meritorious, dynamic, and valuable. Sembility consultants are experienced marketing specialists and, on occasion, I am happy to work with them. I would gladly recommend working with them to my friends and clients.
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Agnieszka | CEO
Usługa: Consulting

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