George Mponos
Team Lead Web Developer at XM
Athens, Attica, Greece
Summary
🤩
Rockstar🎓
Top SchoolGeorge Mponos is a Team Lead Web Developer based in Athens with 11 years of hands-on experience building and maintaining PHP-driven web applications and backend systems. He combines leadership at XM with deep practical expertise in PHP, MySQL and payment gateway integrations, and is committed to clean, maintainable code. An active open-source contributor, George has fixed bugs, improved tests, and added features to widely used PHP projects such as Guzzle, Monolog and PHP_CodeSniffer, and contributed currency and formatter work to the notable moneyphp/money library. His background ranges from technical support and IT management to leading development teams, giving him a pragmatic quality-first approach to delivery and developer experience. Notably, he blends daily production responsibilities with continuous improvements to tooling and standards that benefit both product reliability and team productivity.
11 years of coding experience
8 years of employment as a software developer
BSc Electronic Computer Systems Engineer, BSc Electronic Computer Systems Engineer at Technological Educational Institute of Piraeus
Greek, English
Stackoverflow
2,197reputation
115kreached
67answers
22questions
cakephp
top-5%
Github Skills (34)
unit-testing10
static-analysis10
testing10
code-standards10
http10
coding-conventions10
logger10
monetary10
software-quality10
guzzle10
phpunit10
psr-710
http-client10
php10
psr-310
Programming languages (6)
Github contributions (5)
guzzle/psr7
Oct 2016 - May 2020
PSR-7 HTTP message library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 27 commits, 24 PRs in 3 years 7 months
Contributions summary:George primarily contributed to the PSR-7 HTTP message library by implementing new functionalities and fixing existing issues. Their work included adding a function to retrieve message summaries, correcting a return typehint, and modifying code structure. They also addressed code quality and robustness by validating response status codes and improving test bootstrapping.
psr-11phphttp-messagepsr-7psr
moneyphp/money
Aug 2017 - Mar 2021
PHP implementation of Fowler's Money pattern.
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 commits, 17 PRs, 80 comments in 3 years 8 months
Contributions summary:George contributed to the `moneyphp/money` repository by updating currency definitions, fixing issues related to initializing formatters and parsers, and implementing a class for custom currencies. They also worked on improving tests for parsers and general code improvements. The user's commits included changes to core files and tests within the project.
phpcurrency-convertercurrencycurrency-exchange-ratespattern
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