something epic together

Welcome to 21CN Software & Testing House. For over 10 years, we have developed effective methods of improving the quality of software, which gives you a competitive advantage and helps to achieve success.


We stand up for quality considering it as a priority. We create, test, design and we care!

We keep an eye on every part of the product lifecycle.

We give our clients the creative, technical and business support, by helping to build your web and mobile applications, providing specialists for the project and also confirming that your software complies with the guidelines and standards.

Web Development

Create beautiful, fast and secure web applications tailored exclusively for your business goals.

PHP Symfony Laravel Slim Zend Framework JS jQuery Vue TypeScript Bootstrap

Mobile Development

Build well-designed and optimized custom mobile applications with a delightful UX for both Android and iOS.

Android iOS

Quality Assurance

Our specialists make sure the product is released bug-free and that it provides users with a flawless experience.

Software testing Test automation Business process support

Consulting & Code Audit

We will help you implement and improve your new tech stack from the very beginning to a final shipment of an efficient and scalable product.

Analysis Code Review Risk Calculation


Our developers and testers complement or replace existing teams entirely. Scalable teams from start-to-finish. Developers, Product Designers, Project Managers or QA Engineers

Whole team or individual employee Professional support Flexibility Team customization

Brand Identity Design

Branding is more than a logo! Effective branding includes naming and trademarks, color palettes, graphic themes. And yes, logos.

Visual brand identity UX/UI design

Case studies

Our portfolio speaks for itself. And find out some of our projects.
Web Development

Exam distribution platform

Exam distribution platform dedicated to IT specialists who, on their career path, want to confirm acquired knowledge and competencies through certification.

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it exam
Web Development Zend Bootstrap


A platform dedicated to share knowledge and offer services in the area of software testing.

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Order Manager
Web & Mobile Development Android

Order Manager Restaurant

With an understanding for business needs, this time we focused on the catering industry, and our new project is an online store with a mobile application that is used to accept and manage restaurant orders.

Brand Identity Restaurant

Kafëbë - Coffee & Bistro

Kafëbë is a cozy cafe bistro in the heart of Gdańsk's for which we have made a full visual brand identity.

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Quality Assurance Software testing


An up-to-date online database of companies where you can find reliable business partners, verify their data and check the ratings and opinions of their contractors.

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Mr Buggy
Mobile Development Android iOS

Mr Buggy

A family of applications shared for the purpose of testing education and served as tasks during subsequent editions of TestingCup - Championship in Software Testing.

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New Port
Brand Identity Restaurant

New Port

We have made a full visual brand identity for the new restaurant located in the new port in Gdańsk.

Visit website

After over 10 years
of experience we feel
we want more!

we are waiting for your reviews :-)
By working with us, you will gain:
  • Knowledge and experience
  • Professionalism and high efficiency
  • Individual approach to the project
  • Flexibility of service delivery
I’m not humble saying this, but when it comes to software quality, we are high-end experts. Growing from the area of quality control, we have transformed into Software & Testing House to deliver software of outstanding quality.
Radek Smilgin
Radek Smilgin CEO

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