Writing a project that works with the CRM system, the application served to work with reports from field support engineers help desk, and also with their location. Further, authorization in the application using a QR code was developed. I worked with the following stack and libraries: WebView, Google Maps, json parsing libraries, httpurlconnect, java mail api, okhttp, jdbc, sqlite.

Administration of workstations and servers based on Windows, Linux. Remote customer support. Working with mysql database, working with active and passive network equipment, configuration and maintenance. Maintenance of a dedicated hosting server, installation and configuration of ubuntu server web servers, setup from scratch and further support.