Vissarion Fisikopoulos is a Senior Software Engineer at Oracle (MySQL) and a researcher at the University of Athens, with over a decade of experience in geometric computing, spatial databases, and scientific software. He actively contributes to open-source projects, including the Boost C++ Libraries and MySQL, and leads development at GeomScale, a NumFOCUS-affiliated organization focused on scalable geometric computing.

Vissarion serves as an editor for the Journal of Open Source Software and has mentored over 20 students through Google Summer of Code, MSc, and PhD programs. A regular speaker at technology conferences, he also teaches university-level courses in computational geometry and algorithm engineering.