Senior Administrator Unix

About the project

We’re looking for an experienced Senior UNIX Administrator to join our client’s international infrastructure team. This role is perfect for those who enjoy working with cutting-edge technologies, driving automation, and working in a dynamic DevOps environment.

Sounds like your kind of challenge?

Your responsibilities

• Configure, deliver and support Linux (RHEL) and Solaris-based environments in a DevOps model.
• Work collaboratively with application teams and DevOps pods to integrate centrally provided infrastructure services.
• Support both production and non-production environments, improve SLAs, and ensure operational reliability.
• Automate daily operations using scripting languages (Shell / Perl / Python).
• Advise on Unix/Linux design and implementation best practices across project lifecycle stages.
• Review capacity and performance against SLAs, and implement changes where needed.
• Assess and implement changes based on change requests; translate business requirements into technical specifications.
• Troubleshoot incidents, perform root cause analysis, and ensure permanent corrective actions.
• Cooperate with infrastructure, application, support, and engineering teams to provide expert guidance.

Our requirements

• 6–10 years of hands-on experience in Linux server administration (RHEL); SLES and Solaris (x86/SPARC) exposure preferred.
• Industry-recognised UNIX certifications.
• Strong Linux administration and architecture experience, including volume managers, multipathing, kernel tuning.
• Advanced scripting and automation skills (Shell, Perl, Python).
• Familiarity with virtualisation platforms: VMware, Citrix, Hyper V.
• Storage systems experience (NAS and EMC SAN — standalone and clustered with replication).
• Solid networking knowledge (TCP/UDP, LAN/WAN, F5, firewalls, Cisco).
• Experience in major enterprise or regulated environments (ideally Financial Services).
• Knowledge of DevOps tools and configuration management (Ansible, Puppet, Chef).
• Veritas Volume Manager / Cluster Server experience — a plus.
• Understanding of ITIL concepts and service operations.
• Self-sufficient, organised, proactive, and able to work effectively under pressure.

What we offer

• Hybrid work setup – 6x/month from the office in Kraków
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.