The reha buddy team gained critical knowledge during respective studies,but is also experienced due to practice. It includes various characters and this mix makes sure to see things from different perspectives. Get a glimpse of the team here:

Harald Jagoš, Andrés Tkachenko, Paul Kressnik and Dietmar Rafolt worked together on several projects at the Medical University of Vienna. In 2018 they decided that research is important, but it is a pity, if no value for the general population is generated. This was the beginning of an endeavour called reha buddy. 

With ongoing development of our solution, we are also developing a strong and pro-active team. Different backgrounds, but a shared vision: creating a meaningful and innovative impact on physical rehabilitation, to ensure health for all on the long run.


Meet the team!


Dr. Harald Jagoš

  • CEO
  • Co-Founder

During his studies, Harald Jagoš developed the mindset of putting research into meaningful action. That is why he focused on Active & Assisted Living (AAL) in the first place, where he worked on projects related to sensor-based gait analysis. After gaining some general experience, he quickly got more responsibilities in national research projects. However, it wasn’t until 2018 when he felt like having the right partners on his side to put efforts into founding the company. Besides being a tea lover (and that might be even an understatement), Harald Jagoš is passionate about statistics – which is a blessing for the medical field, but sometimes a course for students whom he supervises.


Andrés Igor Tkachenko Bril, MSc.

  • CTO
  • Co-Founder

Andrés Tkachenko was born in Ukraine, lived in Spain and moved to Austria for his studies. Initially, the plan was to return to Spain afterwards, but then: life happened and he co-founded reha buddy. He is the mastermind behind the app and also what one would call a perfectionist. Andrés Tkachenko loves loud, electronic music, which he listens to on his self-manufactured speaker boxes preferably.


Paul Kressnik, BSc

  • Head of Regulatory Affairs
  • Quality Management

Paul Kressnik started in hardware development and quality assurance. When the first became obsolete, he focused on the latter. He is now following his sense for order and structure by building reha buddy’s IT Infrastructure. Furthermore, he is in charge of our certifications and legal matters. When he is not busy with setting up contracts or dealing with quality norms, he trains for triathlons.


Univ.-Prof. DI Dr. Dietmar Rafolt

  • Co-Founder
  • Scientific Advisor

Biomedical Engineering was an important field already in Dietmar Rafolts years at University. Since many years he is also active as an associate professor at Medical University Vienna and member of various research groups. Also for him it is of great importance to give research a purpose and make it practically available for people. Dietmar Rafolt is mostly assisting reha buddy with his experience and great network in the health tech field.


Mag. Elisabeth Sienčnik

  • CFO
  • CO-Founder

At first, Elisabeth Sienčnik was mentoring reha buddy. Since her entry as a co-founder she is responsible for the financial matters and brings in many years of experience. She loves to question solid structures and makes sure the team stays curious and open for innovative ideas. In any case, a solution-focused approach is her priority!


Katrin Wrulich, MA

  • Marketing & Sales
  • Business Development

When her studies came to an end in late summer 2020, Katrin Wrulich became an official team member after months of freelancing for reha buddy. She loves structure and always starts her office-days by writing a To-Do-List and a coffee – no milk, no sugar. Furthermore, Katrin Wrulich is, together with Dietmar Rafolt, our representative in Graz, where she has lived since 2009.


Max Prem, MSc

  • Data Science
  • Machine Learning

In late summer 2020, Max Prem joined the team. His focus is on deep learning (neural networks), so he basically trains reha buddy’s app to process information in new ways and improve the outputs. Apart from that, he loves to practice skills on the slackline and shares a passion with Andrés Tkachenko: very (very!) hot chilis.


Teodora Mâgurean, BSc.

  • Data Science

Teodora Mâgurean started with an internship in summer 2019. She wrote her bachelor’s thesis with reha buddy, and now added the master’s thesis as well. She collects, analyzes and processes data from physiotherapy exercises for this matter and is, obviously, deeply rooted with the scientific part of reha buddy. Besides that, she is a professional handball player at UHC Müllner Bau Stockerau.