Senior Linux and UNIX Systems Administrator – DevOps Infrastructure

Unleash Innovation in Enterprise Infrastructure — Lead the Rise of Agile Linux & UNIX Systems!

Krakow-based opportunity with hybrid work model (up to 3 remote days per week).

As a Senior Linux and UNIX Systems Administrator – DevOps Infrastructure, you will be working for our client, a leader in enterprise IT solutions within highly regulated industries. You will be instrumental in configuring, supporting, and optimizing critical Linux (primarily RHEL) and Solaris server environments. Join a team that champions operational excellence through automation, innovative technologies, and best practices, driving the digital transformation of core enterprise services.

Your main responsibilities:

• Configure, deliver, and support Linux (RHEL) and Solaris server environments within a DevOps framework.
• Collaborate with application and DevOps pods to deploy and maintain centrally provided services ensuring stability and reliability.
• Provide ongoing operational support across live and non-live environments, maintaining SLAs and improving service quality.
• Drive automation initiatives by scripting (Shell / Perl / Python) to streamline routine tasks and enhance operational efficiency.
• Advise on UNIX/Linux design best practices throughout project cycles, including build, ITSA, and implementation phases.
• Develop and update standards and procedures for capacity management, reviewing SLAs to assess capacity risks and adjusting demands accordingly.
• Analyze, document, and implement change requests translating business requirements into technical solutions.
• Support incident troubleshooting, conduct root cause analysis to prevent recurrence, and improve overall system stability.
• Work closely with infrastructure, application, and support teams, providing expert guidance and consultancy.

You’re ideal for this role if you have:

• 6+ years of Linux server administration experience, primarily with RHEL, in enterprise environments.
• Industry-standard UNIX certifications.
• Proven expertise in Linux architecture, including volume managers, multipathing, and kernel tuning.
• Strong scripting skills (Shell / Perl / Python) for automation.
• Extensive troubleshooting experience with Veritas Volume Manager and Veritas Cluster Server.
• Solid infrastructure background with x86 hardware, virtualization (VMware, Citrix, Hyper-V), and storage (NAS, EMC SAN, replication).
• Operational knowledge of networking concepts (TCP/UDP, LAN/WAN, F5, firewalls, Cisco).
• Experience working in highly regulated or major enterprise environments (e.g., Financial Services).
• Familiarity with DevOps / configuration management tools like Ansible, Puppet, Chef.
• Excellent communication and collaboration skills, capable of working effectively across multiple teams.
• Strong self-management skills, prioritization, and the ability to work under pressure.
• Good understanding of operational disciplines (ITIL concepts beneficial).

It is a strong plus if you have:

• SLES and Solaris x86/SPARC experience.

Language Required for the role:

• English – communicative proficiency required.

Eligibility to work in:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.