About us

Since 2004, Twinstar Software House LTD has been developing complete devices for its customers. Everything from the electronics, to the software and even the enclosures is designed and tested in house by a team of experienced engineers.

Over the years we have become established as a leading Bulgarian based OEM design firm, developing innovative hardware and software solutions from our HQ in Varna.

We’ve specializes ourselves in the hardware and software development of products such as NFC smartcard readers and products for the transport industry like ticket machines and ticket validators. Also we are versed in designing custom communication solutions and embedded computers and much, much more.



We have extensive software development history in developing android, windows and linux programs and libraries in wide range of languages including C/C++, Java, C#. PHP and others.

hardware electronic

At Twinstar Software House LTD we have a vast experience in designing schematics and printed circuit boards (PCBs) for embedded systems.


A product is more than just printed circuit boards and some software, it also needs to be robust enough to survive the changes of daily use.

Complete product

In order to make sure that the product meets the design requirements that the customer has assigned to us, all our teams constantly communicating with each other, in order to make sure on aspect of the design, does not cause problems for another.

underwater solutions

Underwater research poses a lot of challenges when it comes to equipment. Off the shelf solutions are often plagued with problem concerning reliability or functionality.

The mission of „Underwater Solutions” is to develop robust, reliable and purpose designed solution for underwater research. Currently the main once we are currently developing are a Remotely Operated Vehicle (ROV) and a Sub-Bottom Profiling (SBP).

We are constantly improving the designs in search of perception.