Vissarion Fisikopoulos
Researcher at Google Summer of Code
Municipal Unit of Dafni, Attica, Greece
Summary
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Senior🎓
Top SchoolVissarion Fisikopoulos is a researcher and senior software engineer with 15 years of experience building geometric computing, spatial database, and optimization software across academia and industry. He has contributed to high-profile open-source projects such as Boost.Geometry (improving algorithm precision and edge-case handling) and helped integrate spatial features into MySQL while at Oracle. As co-founder and lead at GeomScale, he delivers scalable algorithms for high-dimensional sampling, convex optimization and numerical integration, bridging theoretical CS with production-ready implementations. He teaches and supervises graduate students in computational geometry, mentors open-source contributors through Google Summer of Code, and serves on the editorial board of the Journal of Open Source Software. Based in Greece, he combines deep mathematical training (PhD) with practical engineering chops and a knack for turning complex geometric theory into reliable, well-tested code.
14 years of coding experience
15 years of employment as a software developer
PhD Computer Science, PhD Computer Science at Ethnikon kai Kapodistriakon Panepistimion AthinonDiploma Computer Engineering & Computer Science, Diploma Computer Engineering & Computer Science at University of Patras
English, German, French
Github Skills (4)
cprogramming-language10
c-language10
geometric-algorithms10
unit-testing9
Programming languages (10)
Github contributions (5)
boostorg/geometry
May 2016 - Dec 2022
Boost.Geometry - Generic Geometry Library | Requires C++14 since Boost 1.75
Role in this project:
Backend Developer
Backend DeveloperContributions:424 reviews, 536 commits, 219 PRs in 6 years 8 months
Contributions summary:Vissarion contributed to the implementation and testing of geometric algorithms for the Boost.Geometry library. The commits focused on adding tests for the perimeter and area calculations, utilizing both default and custom strategies for various geometric shapes. They made efforts to handle special cases like segments passing through a pole and ensure consistency in coordinate conversions. Additionally, the user worked on refactoring to improve precision and address issues related to edge cases.
spatial-indexcppspatial-analysisgeometric-algorithmsc-plus-plus
GeomScale/dingo
Feb 2021 - Dec 2022
Contributions:3 releases, 55 reviews, 19 commits in 1 year 10 months
python-librarypower-systemsmetabolic-networkspythonpolytope
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