Elissaios Sarmas
Senior Researcher at NTUA, DSS Lab
Greece
Summary
👤
Senior🎓
Top SchoolElissaios Sarmas is a Senior Researcher with a decade of experience at the intersection of AI, data analytics and energy systems, holding advanced degrees in Electrical & Computer Engineering and a PhD focused on Artificial Intelligence & Energy from NTUA. Based in Greece, he combines strong analytical problem-solving with practical software skills, contributing to production-grade back-end code such as robustness and Unicode handling in the widely used PL/JSON PL/SQL library. His work blends academic rigor from DSS Lab research with hands-on optimization, compilers, and Oracle-focused engineering visible on his GitHub. Known for tackling large-string, Unicode and performance edge cases, he brings a rare mix of mathematical depth and pragmatic engineering to forecasting and techno-economic challenges.
10 years of coding experience
1 year of employment as a software developer
Doctor of Philosophy - PhD, Artificial Intelligence & Energy, Doctor of Philosophy - PhD, Artificial Intelligence & Energy at National Technical University of Athens
English, French, Greek
Github Skills (6)
plsql10
json10
oracle10
oracles10
sql10
unicode10
Programming languages (8)
Github contributions (5)
pljson/pljson
Jan 2016 - Jan 2023
PL/JSON is a generic JSON object written in PL/SQL. Using PL/SQL object syntax, users instantiate a JSON object and then add members, arrays and additional JSON objects. This object type can store JSON data, in Oracle, persistently.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:22 releases, 219 commits, 178 PRs in 7 years
Contributions summary:Elissaios primarily focused on modifying and updating code related to JSON printing functionality within the PL/SQL library. The commits indicate improvements to string handling, Unicode support, and CLOB operations for better performance and to avoid ORA-6502 errors when processing large JSON strings. They also addressed bugs and added new tests to validate the correctness of Unicode and large string handling within the PL/JSON library.
sqlinstantiateadditionalarraysgeneric
dsnz/pljson
Jan 2016 - Mar 2024
PL/JSON is a generic JSON object written in PL/SQL. Using PL/SQL object syntax, users instantiate a JSON object and then add members, arrays and additional JSON objects. This object type can store JSON data, in Oracle, persistently.
Contributions:49 PRs, 120 pushes, 12 branches in 8 years 2 months
jsonbsqlinstantiateadditionalarrays
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