We are Invasys , an R&D company specializing in providing governments with security technology aimed at preventing terrorism, insurgency, and organized crime. We develop and manufacture mission-critical HW and SW used under the most demanding conditions. Our focus on extensive in-house research & development makes sure we are always at least one step ahead.

To drive our mission, we work with Android and iOS mobile platforms, and the GSM hardware. While we favor the agile environment, much analytical and experimental work is needed to push our way through the challenges.


InvaSys technology

We work with various technologies. Apart from the specific tools displayed above, we also use software-defined radios, FPGAs, and GSM modems during our work. On mobile platforms, we do a lot of reverse engineering, and most of our software that we deliver is driven by C ++ and Python.

Cooperation with FI MU


The faculty of informatics highly values the knowledge acquired by our top employees. Our PhD graduates regularly give lectures in security-related subjects, such as Applied cryptography PV079 , Advanced Topics in Information Technology Security PA018 , and Authentication and Access control PV157 . We also participate in the seminars on Information security and cryptography PV080 .

Supervising diploma theses

We support our interns and employees in pursuing their academic degrees. That's why we tailor both bachelor's and master's theses topics for the students. We often collaborate on the thesis directly on the workspace, as a part of the internship or contract. Together with the CRoCS laboratory and other industry partners, we help to organize an annual competition for the best computer security diploma thesis.


Many of our employees started their journey with Invasys on an internship during their bachelor or master studies. Once the students get accommodated with our work, they usually follow up with the diploma thesis or transition to a part-time or even full-time contract. During the internship, we provide the intern with close mentoring, but also with the space to take responsibility and come up with their own ideas.

Sponsored PhD position

Our company is one of few to have its sponsored PhD position at the Faculty of Informatics. We support a student to study large-scale analysis of cryptographic primitive usage in various datasets.

Reach out to us

Usually, we start the cooperation with an internship or a part-time contract. We recommend that the applicants have at least four semesters successfully passed before applying. If you have a basic understanding of some of the technologies we use, we encourage you to contact us. Don't worry, we understand and emphasize that you also have to complete your studies. In Invasys, you will learn the technologies as you go. Also, we highly value if you're interested in computer security. On a workspace, we speak Czech, but some of our employees are foreign, so basic spoken English comes in handy.

During the application process, you will meet in person with two of our technical officers to discuss your cooperation's individual shape tailored to your passions and our needs. If we agree on a promising collaboration, you're on board!

You can also meet us during the FI days with industrial partners. Please, stop by at our stand and discuss whatever matters with us! We typically bring in an active student who once was in a similar role as you are and who can honestly discuss the pros and cons of working with Invasys.

Who to contact

Jan Krhovják

Internships and theses
E-mail: jan.krhovjak@invasys.com
Jan Krhovjak (photo)

Kateřina Szabo

Part time and full time
E-mail: katerina.szabo@invasys.com
Katerina Szabo (photo)


Mária Švidroňová (photo)

Over 15 of our employees study or graduated at FI and went through some form of cooperation with our company. Also, our CSO and CTO both got their PhD degree in CRoCS at FI.
To show you how the Invasys life looks like, we asked several questions to the alumni of FI and our current employee, Mária Švidroňová.

How did your cooperation with Invasys start?

I bumped into the Invasys poster on a notice-board right next to the study affairs department at FI, that was in the fifth semester of my Bachelor's studies. At that time, I was seeking some work experience and what caught my attention was that both I and Invasys shared the same field of focus - cybersecurity. Being able to learn new things at work which I could also utilize in school and vice versa was exactly what I was looking for. Simultaneously, the company offered an internship that did not require long previous experience, which motivated me to apply for the spot.

What forms of cooperation with Invasys did you experience? How did the whole experience evolve?

At first, I started the paid internship. After year and a half, at a planning meeting with my project manager, he proposed a part-time job constituting three days a week. Finally, when I graduated with my Master's degree, I switched to a full-time job and stayed in Invasys until now.

Were there any actions that the Invasys make to help you manage the school-work-life balance?

Absolutely. During the internship, I could manage my own time in Invasys. During some tough school weeks, or during an examination period, I could easily take a week off from Invasys to focus on exams. All that was needed was asking for such a thing in advance. The part-time job was more commiting, but even then I could choose the days and hours in the office. Regarding the home-office, that posed a problem prior to the covid situation. Interns and part-time employees were not allowed to work remotely, which I do not perceive as an ideal situation (for instance, having a two-hours break between lectures does not allow you to work from the faculty, which is slightly inconvenient). However, during covid, the company's home office regulations were vacated, which might bring some changes for the future.

Did the Invasys experience help you with your studies?

Surely yes. I learnt a lot about C ++ programming and also about the computer security. One of my first tasks in the Invasys was to implement a protocol over the ethernet connection which deepened my understanding of computer networks. At the same time, I learnt to utilize Wireshark which came handy in many courses. Similarly, having the code reviewed by experienced colleagues helped my C ++ programming skills grow. There was a whole bunch of interesting points I learnt about phone security, encryption, or security in organizations. All these themes emerged also during my studies of computer security at FI.

Is there anything else to tell about Invasys that could interest the potential candidates from FI?

In Invasys, we have a great community of skilled developers who don't hesitate to reach out to you if you get stuck with your task. So, don't be afraid to send your CV, even when you don't have much work experience, we'll gladly guide you through the tough start. Last but not least, from time to time, tapped beer can be found in the office which does not really work well with to the occupational safety regulations, but it's definitely another factor why you should become a part of our team.