Playtika

- Took part in development of 10+ features and services: discussion sessions with product owner and team, estimating, design of DB schemas and client API, implementing in PHP and Java. - Led the backend development of 2 features (PHP). - Wrote unit and functional tests with PHPUnit and Codeception. - Optimised communication between PHP application and Java service with performance increase 20%. - Refactored a big legacy PHP scope as part of moving user data from MySql to Aerospike that resulted in a performance boost of 10-20%. - Production support and release activities. - Was a gate-keeper of 10+ features and services. - Successfully onboarded 3 newcomers.

PaySeven

- Developed and supported payment processing gateway. - Integrated new APIs. - Performance optimization.

aheadWorks

Resolved technical issues with Magento extensions.