Our technologies: React.js
React.js was made for business. Our team will help you use it to achieve your goals and grow your company.

Simple, effective, scalable

React.js is a framework that the world needed. It’s easy to use and agile. It was created with business in mind.

That’s why it’s being used by companies like Instagram, Uber and AirBnB.

This framework allows for utilizing JavaScript code and creating perfect User Interfaces. It also continuously monitors the Interface’s compatibility with the app’s backend. It’s the perfect framework for dynamically growing companies who need agile solutions.

The demand for React.js Developers is growing faster than for Angular Developers!

Why React.js?_


React.js will increase your team’s productivity because it makes testing and debugging easier. This way, the team can focus on building rather than on researching bugs.


React.js’s data structure flow ensures that the changes made by your team will not interfere with the system’s operations. Thanks to this, apps made using React.js are stable and ensure ongoing, excellent performance.


React.js is one of the most frequently used web frameworks. It’s used by lots of Developers around the world and companies like Lyft, Dropbox and BBC. When choosing React, you can be sure you’ve made the right choice..




Our teams support IKEA in 10 locations in Poland as well as in 6 other locations around Europe.

EO Networks


EO Networks

Especially for EO Networks we have trained Developers in rare technologies. The team has been implemented in 3 months and currently supports EO Networks in 5 locations in Poland.

European Railways


European Railways

Our team build a dedicated ticket selling system based on the existing European Railways’ infrastructure. The project was completed within a tight deadline by a team of experts in rare technologies.

Big Family Card


Big Family Card

We have built a team that supported the main contractor while building a system for managing the Big Family Card. Thanks to our specialists, the project was completed in 6 months.

Education Services Company


Education Services Company

Our team has created a complete system for managing our Client’s educational institution data. The software helped our Client enter the market quickly.




Our specialists provide ongoing support when it comes to developing the online banking and mobile banking systems as well as in-house management systems for the Bank. The team consists of analysts, developers, designers as well as administrators and testers.




Our Clients is providing software for one of the biggest plane production groups. Our teams support the development of this software using .NET technology and the management of projects.

C_cloud – clear insight into the project

We know that you will be responsible for the project and its results. Therefore, in addition to specialists, we provide you with an application that will facilitate monitoring (real-time insight into the progress of work), accounting based on the report, and even allow you to efficiently scale the team with more Connectis developers.

There’s something for everybody

We write more than code. We prepare industry reports as well as articles that show our view on issues important in your and our work. C_blog is a great place to share experience and opinions. We are also counting on you to share yours!

Build your IT team

We are proud, that we connect best specialists with best companies. Tell us about your future team.

Rafał Drozd

The Controller of personal data is Connectis Sp. z o.o., the data shall be processed in order to contact the person submitting the inquiry and, in the case of separate consent, to send commercial information by electronic means. You have the right to access data, the right to rectify (correct) or complete incomplete data, the right to request deletion of data, request the restriction of data processing, the right to receive your data in a structured, commonly used format and to transfer it, the right to object to data processing, the right to withdrawal of granted consents and the right to make a complaint to the supervisory body. The personal data Controller is Connectis Sp. z o.o., Chmielna 71, 00-801 Warszawa, e-mail: office.pl@connectis.pl (hereinafter "Connectis" or “company”). The company has appointed a Data Protection Officer you can contact at the following e-mail address: iod@connectis.pl and under Controller’s correspondence address with the indication “Data Protection Officer”. The personal data submitted in the contact form / in connection with making a query by e-mail shall be processed in order to contact the person making the query, understood as legitimate interest of the personal data Controller (Art. 6 it. 1 letter f of Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (hereinafter GDPR)). If consent is given, the data shall be additionally processed for the purpose of sending commercial information by electronic means (Article 6 (1) (a) of the GDPR). The data shall be processed by the end of a calendar year from the end of correspondence. If you consent to the sending of commercial information by electronic means, the data processed for this purpose shall be processed until withdrawal of the consent. The recipients of the data shall be the partners cooperating with Connectis (after expressing consent), the entities processing data at the order of or on behalf of the data Controller, on the basis of a personal data processing agreement in order to render services specified in the agreement, e.g. teleinformatics services, i.e. hosting, delivery or maintenance of IT systems, designing and maintenance of a website, electronic mail service, legal, advisory, marketing services, as well as entities authorized under the provisions of law. Additionally, the data recipients shall be the providers of technologies used by the internet website. Please be advised that it may be necessary to transfer your personal data outside the European Economic Area (EEA) in connection with the possibility of conducting business there by some of our suppliers who are data recipients. In any such case, before transferring the data, however, we shall ensure that, as part of ensuring data security, our suppliers guarantee a high level of personal data protection through the use of standard contractual clauses adopted by the European Commission and confirmation of the existence of effective data protection enforcement mechanisms, required by European Union law. You have the following rights: the right of access to your personal data (Art. 15 GDPR), including the right to obtain data copies (Art. 15 it. 3 GDPR), the right to rectification (correction) or completion of incomplete personal data (Art. 16 GDPR), the right to demand erasure of your personal data in cases foreseen by the provisions of law (Art. 17 GDPR), the right to obtain restriction of processing of your personal data (Art. 18 GDPR), the right receive your data in a structured, commonly used format and the right to transmit those data, if the transmission is performed on the basis of your consent or pursuant to an agreement concluded, as well as when processing is carried out by automated means (Art. 20 GDPR), the right to object to processing your personal data in the event when the data are processed in order to pursue legitimate interest of the Controller, for the reasons connected with its particular situation, including profiling (Art. 21 GDPR), in cases where the processing of data takes place on the basis of the consent granted, you have the right to withdraw the granted consents at any time, but without affecting the lawfulness of the processing before their withdrawal. In the event when you conclude that processing your personal data breaches the provisions of the Regulation, you have the right to make a complaint to the supervisory body responsible for personal data protection, i.e. the President of the Personal Data Protection Office seated in Warsaw, ul. Stawki 2, who you can contact in the following manners: by traditional mail: ul. Stawki 2, 00-193 Warsaw, via electronic inbox available at https://www.uodo.gov.pl/pl/p/kontakt, by telephone: (22) 531 03 00. Submission of data is voluntary, however indispensable for the realization of the purpose mentioned above.

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