Custom Development

The out-of-the-box IT products cannot address all business needs as demands for software supporting business are so specific, that they require building a dedicated solution. Sii Poland is an experienced supplier of applications tailored to unique needs of clients. By employing over 2000 specialists in virtually all IT technical domains and partnerships with the leading software development companies, such as Oracle and Microsoft, we are able to select the technology best adjusted to specific demands and support our clients’ in decision making process with regard to technology stack.


Sii Poland is a partner of the leaders in the software development sector; we have the status of Oracle Sliver Partner, as well as Microsoft Golden Partner in the application development area. We offer traditional (PRINCE2, PMBOK) or agile (Scrum) approaches to management adopted by our experienced and certified Project Managers.

Why Sii Poland?Check why you should choose Sii

  • 280 experienced Java developers.
  • 210 .Net developers.
  • 150 C/C++ developers.
  • 40 Cobol and RPG developers.
  • 31 ETL and Oracle PL/SQL developers.
  • Microsoft Application Development Gold Competency Partner.
  • 180 Oracle, Microsoft, IBM, Sybase, Scrum certifications in Custom Software Development.

What we offer in the field of custom development


Our Standards 

  • Programming: Java, .NET, C, C++, C#, Cobol, Perl, JavaScript, PHP, XML, PL/SQL, Objective C
  • Frameworks: Struts, GWT, Spring, Spring MVC, Vaadin, JSF, Hibernate, MyBatis, Ruby on Rails
  • Mobile Applications: iPhone, Android, Blackberry, Windows 8
  • Front-end: HTML/CSS, HTML5/CSS3, JS, Flash, Silverlight
Oracle Silver Partnership

Industries using our Custom Development services

How we work It is our clients who decide

Case studies

Our clients We are a trusted services provider for:

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