Linux Administrator – Hardware Specialist

What will your work week look like? You'll be our go-to person for the physical layer of the infrastructure. We have a large web and mail infrastructure physically located in three data centers across two European countries. Hundreds of servers, switches, cables, disks, petabytes of customer data, and someone has to keep all of it in order. You'll be the person who knows what's in which rack, what condition it's in, and what will need to be expanded or replaced in the near future. Data centers and hardware When a batch of new servers arrives, you rack them, cable them, set up the network, and prepare them for installation. You handle hardware problems: replacing disks, RAM, power supplies, and other components. For more complicated in-warranty repairs, a specialized technician can be requested to do the replacement. You keep the racks and the office storage room in order: cables, server inventory, decommissioning, capacity planning. You handle warranty claims and may eventually also communicate with data centers, hardware suppliers, and take part in audits. The hardware part takes up roughly half of your working time, and may increase later. Linux infrastructure Beyond that, you'll be managing our internal and hosting Linux infrastructure. You'll take part in improving and automating existing solutions, along with regular upgrades. Our infrastructure is built on the following technologies (don't worry, we don't expect you to know all of them): Ubuntu, LXD, Nginx, ZFS, MariaDB, Postfix, Dovecot, Kubernetes, Zabbix, and many more. It's a great opportunity to learn a wide range of technologies. We manage the infrastructure using the config management tools SaltStack and Ansible. Three to four times a month, you’re on-call for the infrastructure for the entire day. On that day, as the on-duty person, your primary job is resolving problems reported by our Zabbix monitoring or by colleagues. For serious problems, the monitoring alerts you directly on your phone. You step in and fix the issue, ideally so that it doesn't happen again. Don’t worry, if needed, the whole team is ready to help you get through an outage, even in the middle of the night. What we expect from you Hands-on hardware experience: racking, cabling, replacing components, diagnosing hardware failures. You know the differences between RAID levels and are comfortable with IPMI/KVM. Several years of practical experience managing Linux servers, deploying software, monitoring, and upgrades at the command-line level. You understand networking principles and technologies. Subnetting, configuring a network with static IP addresses, NAT, and firewalls are no problem for you. You have experience with automation and scripting (IaC, Bash/Shell, Python...). You approach problems analytically and come up with solutions. English at B2 level or higher and a driving license, since you’ll travel to the data centers. Bonus points Experience with…