We are e.Ray Europa GmbH with headquarters in Darmstadt, Hesse province in Germany.

We are an international team of engineers, economists, creatives and doers. Our roots are in Colombia, India, Germany and Ethiopia. We believe that humankind can live resource-efficiently and in balance with nature without sacrificing valuable energy.

Roxanne Michaelis
CFO, Dipl. Industrial


Sebastian Lemke
CEO, B.Sc., Co-Founder


Fabian Suárez
COO, M.Sc., Co-Founder

Suraiya Fatema
CHO, Ph.D. Hydrology


Juan Sepúlveda
IT and cloud developer

Jeet Biswas
M.Sc. Electronics / IT

Lukas Krambeer
Industrial Engineer
Sales / Customer support

Conor Mager
Mechanical Engingeering
site development


Akida Azizi
Dipl. Physical

Ivaylo Tsonev
MBA Reg. Manager


Simon Schubert
Diplom Industrial

Team e.Ray

Careers, Getting-in, Support

You have a passion for technology and sustainable development? You want to change the world? You are looking for new challenges and you are ready to take responsibilities?

We are looking for pioneers, talents and routineers to make a difference!

e.Ray stands for design options, flat hierarchies, self-responsible project development and an activity with meaning.

Apply proactively for a direct entry.

We also like to supervise graduation and project work in the fields of economics, electrical engineering, mechanical engineering and IT.

Whether you are looking for a direct entry, internship or working student activity, if you want to change something: Write us!

Vision and goals

Our challenge is the sustainable supply of humanity with clean energy.

Rivers are the life lines of the earth, therefore it is essential to protect and use them. Energy and clean water are the bases for economic development, and our goal is to assure supply thereof.

Floods are the most common disaster scenario worldwide, and with our project we help improve the flood warning systems.

We ourselves act, and inspire others act and create alternatives.  We want to do our part for a more liveable society and environment.