I am an experienced senior software developer with over a decade of experience implementing intricate business systems. My strengths lie in tackling complex performance issues and architectural challenges, coupled with adept skills in Data Science, DB management and server administration.My programming skills span over 10 years in Python and PHP, complemented by a mastery of PHP Unit and Design Patterns. In the area of AI and ML, I specialize in NLP and model training. I have extensive experience with frameworks like Symfony, Laravel, Doctrine ORM, and React.JS. Database management includes MySQL and PostgreSQL, and my toolkit includes Redis, Memcached, AJAX, REST, SOAP, XML, JSON, Linux, GIT, and SVN.In my current role as an executive at Data Pro Boston, Inc. in Kiev, Ukraine, I serve as CTO/Team Lead/Senior Architect, steering the ship of B2B Business Systems Automation. Here I've designed and developed highly scalable SaaS applications incorporating NLP functionalities such as tagging, keyword extraction, geo-location, NER, summarization and sentiment analysis. I've trained models on proprietary datasets, facilitated REST API development, managed ETL processes for big data files, and seamlessly integrated SalesForce SOAP APIs. Technologies in my arsenal include Symfony , ORM Doctrine, PostgreSQL, MySQL, Elastic, Memcached, React.JS, GIT, and Jira.In a previous leadership role, I was the Lead PHP Developer for an IT startup in Kiev, Ukraine, where we focused on system development for an IPTV service. I played a key role in creating a CRM billing system and a user portal with personalized account details, seamlessly coordinating the development team. Technologies used included Symfony, ORM Doctrine, PostgreSQL, MySQL, Memcached, React.JS, GIT and Redmine.In a previous chapter at Bilink.ua (telecommunications) from December 2009 to November 2013, I led the development of the provider's CRM system. Technologies used included Symfony, Doctrine, MySQL, jQuery and Redmine.My academic background includes a Master's degree in Information, Network, & Computer Security from the National Technical University of Ukraine, obtained in 2008.