Christopher Chamaletsos
Senior DevOps Engineer Innovation & AI Division National Bank Of Greece
Athens, Attica, Greece
Summary
👤
Senior🎓
Top SchoolChristopher Chamaletsos is a Senior DevOps Engineer in the Innovation & AI division at the National Bank of Greece with 10+ years of experience modernizing core banking systems and automating mainframe operations. He combines deep mainframe expertise (PL/1, JCL, DB2, CA7) with modern Node.js-based tooling—building Electron and web stacks that streamline backend loan processes and operational tasks. A practical efficiency enthusiast, he favors thorough analysis, pragmatic solution exploration, and test-driven automation to deliver reliable systems at scale. Christopher is also an active open-source contributor and creator of developer tools like ByPassCors and zowe-utils, and he runs kantoliana.gr, a Greek utility site that consistently ranks #1 for popular bill-calculation queries and draws ~15,000 monthly visitors.
10 years of coding experience
17 years of employment as a software developer
Master's degree Pervasive and Mobile Computing Systems, Master's degree Pervasive and Mobile Computing Systems at Hellenic Open UniversityBachelor’s Degree Department of Applied Informatics, Bachelor’s Degree Department of Applied Informatics at University of Macedonia
English, Greek
Github Skills (44)
tiddlywiki9
github8
self-contained8
git8
patch7
cors7
javascript7
windows7
linux7
html6
lambda6
nodejs6
aws6
aws-lambda6
browser6
Programming languages (4)
Github contributions (5)
chrishham/BypassCors
Oct 2021 - Jun 2022
Bypass CORS restrictions Client Side.
Contributions:9 releases, 5 commits, 1 PR in 7 months
corsbypass-corsclient-sidebypassrestrictions
chrishham/eviva-releases
Dec 2021 - May 2023
Contributions:33 releases, 1 branch, 31 tags in 1 year 5 months
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