Virtuozzo - one of the most perspective technology companies in the world. We are a private, profitable and rapidly growing global software company with a startup spirit. Virtuozzo delivers a virtual infrastructure platform that enables service providers and enterprises to leverage containers, virtual machines, and software-defined storage with backups, image management, and automation tools — all in a single solution.**Responsibilities**:- Coordination, evaluation, sorting out and solving reported customer problems ensuring customer satisfaction- Performing analysis and evaluations of technical performance and reliability of products, systems and services- Maintenance of internal and external knowledgebase on company's products and troubleshooting procedures- Adhering to defined standards and measures for quality and customer satisfaction requirements and providing feedback according to SLAs**Requirements**:- Desire to grow as an IT professional with a focus on advanced/expert Linux knowledge- Understanding of OS structure and Linux configuration skills- Operating system installation, configuration, upgrade, and maintenance experience (Linux)- Networking and network services (Linux) configuration experience- Experience with troubleshooting/monitoring utilities (Linux)- English (Upper-intermediate or above)- Great communication and interpersonal skills- Ability to stay calm and focused- 1+ years of experience in a software companyIt will be a plus:- Redhat or LPI certificates (would be considered as a huge plus)- Web/mail/MySQL/DNS services on Linux (any Unix based OS)- Experience in virtualization systems (Xen, KVM, VMware)- Experience in hardware storage and data over Ethernet (iSCSI, FC, AOE, etc)- Docker, Kubernetes, OpenStack experience (would be considered as a plus)- Ability to work in shifts