Konstantin Uvarin

[perl, mysql, redis, nodejs] * improved test suite run time from ~30minutes to ~4minutes; * made test fixtures that helped the team greatly increase the test coverage; * implemented JSON-based API that allowed to replace old iframe-based flow; * implemented user error scoring system to improve our scores with partners (most prominently booking.com); * migrated redis database to a new structure, without service interruption; * rewrote queue handling daemons to increase responsiveness and throughput.

[perl, apache, mysql, javascript] Adding features & bug fixes to a large, convoluted, old code base. * Worked on security features such as CSRF prevention and fighting credentials exposure; * During 2015, burnt through a several years' worth of backlog on behalf of UK/IE and AU/NZ offices.

* rewrote an SMS daemon from C++ into Perl with no performance loss, using AnyEvent and Redis; * created a tool to apply rules to messages based on country, mobile provider, priority, and more; * bug fixes & small improvements in a micropayment gateway app.

* Supported colocation billing application [Perl, JS]; * Created a load distribution / queuing component that greatly improved maillist performance [Perl]; * Removed runtime warnings from a mailing list app [Perl].

* Added Italian version to an internal training app [perl]; * Minor features and bug fixes for company's intranet [perl, mysql, mason].

jNetX (now Amdocs) produced a framework for custom applications for use in mobile networks.  * assisted product certification for use in MTS cellular network; * assisted British Telecom integration; * wrote Java code examples for customers (no production code).