Perl, PHP, Yii, onPHP, Symfony, Laravel, Vue, JavaScript, AJAX, JQuery, CSS, XML, Bash, SOAP, RESTful, RPC, Microservices, Web-services, WebSocket, Oracle Database, MySQL, PostgreSQL, MongoDB, ClickHouse, Apache, Nginx, Memcache, Redis, RabbitMQ, Kafka, Highload, Ubuntu server, Debian, Centos, Virtualization, Vagrant, Chef, Ansible, Docker, Git, Stash, Confluence, Hosting, Enterprise architecture, Research and development, Reverse engineering, Project management, Team leadership, Kanban, Scrum, Effectiveness, Optimization, Usability, Responsibility, Full time support, Presentations, Think-tank, Innovations, Cost-effectiveness, Professionality, Professional Web Development, SMM automation