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Who We Are?

[ Driven by Results,
Powered by Expertise ]

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We’re a team that believes in doing things right—no buzzwords, no empty promises. With over 1,300 projects under our belt, we’ve learned exactly what businesses need to grow and succeed. Our focus? Clear strategies, smart tools, and solutions that deliver real results.

Have a challenge? Let’s solve it. Need support? We’ll handle it. From helping you stand out online to streamlining your operations, we’re here to drive meaningful progress for your business. Whatever your goals, we’ll work together to make them happen.

The man in the hat lowered his head and cards were flying around

Concept21 in numbers

+1300

Successfully launched projects

+155k

leads generated

years in business

More results

For a SaaS startup, we reached 75,000 signups

without spending a single dollar on advertising!

Why did we
choose the name CONCEPT21?

BlackJack
21st century
Numerology

Beautiful crown made of gold with green stones

At Concept21, the number 21 symbolizes victory, just like in Blackjack, where hitting 21 is the ultimate win. In the same way, we partner with our clients, working as a team to outsmart the market and secure success together.

Beautiful ball with green glow and green stripes

The number 21 also symbolizes the 21st century, reflecting our commitment to delivering cutting-edge concepts and the highest-quality solutions.

In numerology, the number 21 is associated with creativity, independence, and personal growth. It signifies positive change and the expansion of horizons.

Meet our leaders:

Karol Andruszkow

CO-OWNER & CEO

Dmytro

UI/UX Designer

Wiktor

Business Analyst

Wojciech Andruszkow

CO-OWNER & CTO

Karolina

Content Specialist

Natalia

Social Media Specialist

Yakiv

Web Developer

Krzysztof

UI/UX & Graphic Designer

Marcel

Graphic Designer

Adrian

Growth Hacker

Maciej

Web Developer

Alina

Graphic Designer

Michalina

Project Manager

Marta

Growth Hacker

Jose

Fullstack Developer

Paulina

Social Media Specialist

Hubert

Fullstack Web Developer

Dmytro

Web Developer

Gabriela

SEO Specialist

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Join our deck as the next card, and you're guaranteed to play

WITH THE BEST!

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Clients’ reviews

Joe Stocker

Patriot Consulting

I'm very happy with the website that CONCEPT developed for my company. We are constantly receiving compliments from our clients and partners. The CRM is easy to use and a major differentiator on why we selected Concept.

Holger Vogt

Amena Africa

We contracted CONCEPT to develop a new website for us. The results were outstanding and we are very happy with the new design, functions and structure of the website. The CONCEPT team was super helpful in guiding us on our journey to our new website and are still supporting us after. I can highly recommend their team and services to anyone else in the industry.

Patrick Misiewicz

Polrydian group

I'm a real estate professional, moving my business to the digital/metaverse, which is not such an easy thing to do for busy professionals. That's where CONCEPT came to play, making my www.viewmiamiproperties.com fresh and crispy for my real estate digital campaigns. No matter what business you are in, their personalized and agile approach will make your digital business card look awesome.

Andrea Shaw

The Leasing Academy

The team at Concept21 made great recommendations for my website and helped clarify my messaging for services. I'm very happy with my completed website and appreciate the continued help and guidance they provide even after it has been completed. A great value for the cost!

Wojciech Nowotnik

Enerace

Great staff! Very good reaction and value for money. The entire process was smooth. I can recommend CONCEPT as a reliable partner.

Rafał Zimoch

WhooWhoo

CONCEPT has helped us to start a new webpage/ landing page. Thanks to them we have more than 100% more new B2B leads. Great job CONCEPT!!!!

Paul Mekkering

Nanoflam

I would definitely recommend CONCEPT to anyone who is looking for a very good quality-price web designer. Quick responses, clear and open meetings, reliable, and when the website is running it is easy to make changes yourself. THANKS!

Raquel Barrera Moreno

Diversitas Institute

I totally recommend CONCEPT if you are looking for a reliable and excellent quality-price web designer. A dynamic and professional team that has helped me in the design of my website. Their designs are very modern and the quality and usability of the tools to update the contents are amazing.

Bert Goren

Roxycomms

I had an amazing experience working with CONCEPT on making my new website. Darek was very responsive and had great tips to make things better. I am very happy with the result as well as the professional approach from beginning to end.

Xhulio Bedulla

Xhuli Bre Lalke Shop

Concept21 successfully created and launched a website, which positively impacted the business growth. The team conducted regular meetings to understand the needs and requirements. Their development prowess was critical to the project's success. After releasing the website, my business started to grow, a lot of customers were writing and asking for our services through the website. I can say that helped me a lot.

Dawid Mitera

BudEM sp. z o. o.

We praised the site for its improved look and performance, which resulted in a 50% increase in our site traffic. Concept21 exhibited a keen understanding of the goals, allowing them to deliver professional-looking designs that matched our vision.

Alfonso García

CHULOGO

We were pleased with Concept21 for providing impeccable design skills. The team executed a smooth workflow through, timeliness, effective communication, and an agile methodology. They strove to deliver optimal solutions that ensured the project's success.

Montse Alcalá Bayona

Lovely´s

Concept21 implemented the designs easily, which improved the website's appearance and increased traffic by 60%. The team showed an exceptional understanding of our needs and communicated easily. Overall, they positively surprised us with their top-notch and efficient services.

Our reviews on:

4.9

4.7

5.0