About Us

Who we are

Tetrai is derived from the Greek prefix tetra (“four”) and the English abbreviation AI (“artificial intelligence”).

Tetrai stands for 4 core values:

  1. Our services are state-of-the-art.
  2. Our services are ethically responsible.
  3. Our services are pragmatic: AI is a means to an end.
  4. Our services empower our customers.

Why you should choose us:

  • We are a well-coordinated team of AI experts with many years of experience in the conception, research and development of successful AI solutions.

  • We have implemented successful projects in various industries such as pharma, insurance, automotive and publishing.

  • We combine profound technical understanding, hands-on mentality and foresight.

  • We have won several international competitions.

  • We solve problems with competence and passion.

Dr. Stefan Bordag

Co-Founder & CEO

With over 18 years of professional experience in supervised and unsupervised Machine Learning, Dr. Stefan Bordag is one of the top experts for Artificial Intelligence in Germany. For more than 12 years, he led research and development teams both in the public sector as well as in the high-tech industry.

Dr. Stefan Bordag is a strategic thinker, experienced speaker and an inspirational leader: he exudes optimism and finds elegant solutions that just work. He and his team developed the AI tech stack of the ExB Group using which they won several international competitions .

Dr. Robert Remus

Co-Founder & CRO

Dr. Robert Remus has more than 10 years of professional experience in the field of Machine Learning and Natural Language Processing. He designed, researched and developed successful AI solutions in pharma, insurance, automotive and publishing.

Dr. Robert Remus is a Deep Learning expert, Ethics & AI mentor, and research mastermind. He regularly presented the latest research results at high visibility conferences and organized several international workshops in academia. The AI technology he helped to develop won several competitions.

Dr. Christian Hänig


Dr. Christian Hänig has more than 12 years of experience in lean management of complex AI tech stacks in various industries. After working for a large international corporation for several years, he headed AI research projects and teams for more than 6 years.

Dr. Christian Hänig is a Deep Learning expert, specialist in language models and technical visionary. His pragmatic approaches allow data-driven decisions to be made even under adverse conditions. His ideas and AI solutions have received several awards at international conferences.

Contact Us

We answer your questions.

Get to know us. We look forward to exchanging ideas with you!