Installation, con?iguration, and maintenance of customer Java applications onSolaris and Linux operating systems, ensuring operational stability and highavailability of services. Predominantly used Solaris for mission-criticalapplications, with additional instances on Linux.Maintenance, con?iguration, and updating of a distributed application,guaranteeing its continuous operation. Provided technical support to clientsusing this application, including solving clients' technical issues andconsultations on optimal system use.Installation and con?iguration of a distributed Java application with a modulararchitecture in a data center.Used nginx on Solaris and Linux. Installation and regular updates of client SSLcerti?icates con?igured in nginx. Also experienced in using IIS.Experience in using MySQL and MSSQL. Possess basic knowledge of Oracle DB.Worked with email systems like sendmail, addressing issues with emailblacklists and subsequent removal from these lists.Con?iguration and management of DNS, ensuring correct domain nameresolution, creation, and maintenance of client domains.Creation and use of bash scripts for simplifying routine tasks and processes.Participation in recovery processes after serious failures, minimizing data lossand restoring application functionality within critically short timelines.Worked with GitLab/GitHub and TeamCity for continuous integration anddelivery of projects.Used Ansible for automation of con?iguration and management.Used Docker to enhance development ?lexibility and ef?iciency.Completed courses on Google Cloud to expand competencies in cloudtechnologies.Experienced in servicing QlikView servers.Technologies: Solaris, Linux, Windows, nginx, MySQL, MSSQL, DNS, bash,virtualization technologies, basics of working with AWS, Google Cloud.Installation, con?iguration, and maintenance of customer Java applications onSolaris and Linux operating systems, ensuring operational stability and highavailability of services. Predominantly used Solaris for mission-criticalapplications, with additional instances on Linux. Maintenance, con?iguration, andupdating of a distributed application, guaranteeing its continuous operation.Provided technical support to clients using this application, including solvingclients' technical issues and consultations on optimal system use. Installationand con?iguration of a distributed Java application with a modular architecturein a data center. Used nginx on Solaris and Linux. Installation and regular updatesof client SSL certi?icates con?igured in nginx. Also experienced in using IIS.Experience in using MySQL and MSSQL. Possess basic knowledge of Oracle DB.Worked with email systems like sendmail, addressing issues with emailblacklists and subsequent removal from these lists. Con?iguration andmanagement of DNS, ensuring correct domain name resolution, creation, andmaintenance of client domains. Creation and use of bash scripts for simplifyingroutine tasks and processes. Participation in recovery processes after seriousfailures, minimizing data loss and restoring application functionality withincritically short timelines. Worked with GitLab/GitHub and TeamCity forcontinuous integration and delivery of projects. Used Ansible for automation ofcon?iguration and management. Used Docker to enhance development ?lexibilityand ef?iciency. Completed courses on Google Cloud to expand competencies incloud technologies. Experienced in servicing QlikView servers. Technologies:Solaris, Linux, Windows, nginx, MySQL, MSSQL, DNS, bash, virtualizationtechnologies, basics of working with AWS, Google Cloud.Skills: MySQL - Shell scripting - Tomcat - Solaris - Customer Support - QlikView -Troubleshooting - Software Deployment - Server Administration - SQL -sendmail - Oracle DB - Bash - nginx - F5 BigIP - Linux System Administration -Technical Support - IT Hardware Support - System Deployment - Linux -rundec