Skills: - Strong understanding of OSI, TCP/IP - Linux: bash scripting; configuring and support services DHCP and DNS, iptables, Samba, proftpd, proxy(SQUID); web-servers Nginx/Apache; mail servers Sendmail/Postfix/Exim etc - Databases: PostgreSQL, MySQL - HA cluster: Pacemaker, Corosync, rsync, HAProxy - Monitoring tools: Zabbix, Nagios, ELK stack, Graphite - Practical skills of configuring and support of servers Dell, HP - Practical skills of configuring and support of hypervisors VMware ESXi, Microsoft Hyper-V - Docker - Clouds: AWS: EC2, EBS, RDS, VPC, ELB, IAM, Route53, S3, CloudFront, AWS CLI etc - CI: GitLab CI, Jenkins - CD: Ansible - Version control systems: Git