Senior Windows/Linux Administrator

About the role

We are looking for a Senior Windows/Linux Administrator to manage 24x7 virtualized compute resources across both Linux and Windows environments. The role ensures high‑availability and scalable workloads in multiple data centres and cloud platforms.

Key responsibilities

• Administer and support virtualized compute environments running Linux and Windows Server.
• Provision, configure and maintain servers to guarantee scalability and high availability.
• Monitor system health and performance around the clock, responding to incidents and performing root‑cause analysis.
• Apply patches, updates and security hardening across managed systems.
• Support workload migrations and deployments across on‑premise data centres and cloud services.
• Maintain documentation of configurations and operational procedures.
• Operate key vault and PKI services for secure credential and certificate management.
• Collaborate with security teams to ensure compliance with key management policies.

Required profile

• Strong experience administering Linux and Windows Server operating systems.
• Hands‑on experience with virtualization platforms such as VMware or Hyper‑V.
• Familiarity with cloud compute services.
• Knowledge of key vault solutions and PKI/certificate management.
• Proven ability to work in a 24x7 high‑availability environment.

Required skills

• Linux
• Windows Server
• VMware
• Hyper‑V
• Cloud compute services
• Key vault solutions
• PKI / certificate management
• PowerShell scripting
• Bash scripting

What we offer

• Hybrid work model with three days per week in our Vilnius office.
• Modern ergonomic workspace and multicultural team.
• Additional medical insurance covering gym subscription, team events and outreach activities.
• Opportunities for professional growth and continuous development.