Virtualization Administrator

About the role

As a Virtualization Administrator you will maintain and optimise enterprise virtualization platforms, ensuring high availability and performance for business‑critical workloads. You will work within Cognizant’s infrastructure and cloud services teams and collaborate with cross‑functional groups to deliver stable, scalable environments.

Key responsibilities

• Resolve host and cluster failures across enterprise virtualization environments.
• Troubleshoot high‑availability and load‑balancing issues, including failed failovers and workload placement problems.
• Diagnose CPU, memory, and storage performance bottlenecks affecting virtual machines.
• Roll back or remediate platform patches when incidents or instability occur.
• Investigate and resolve storage connectivity issues affecting virtualized workloads.
• Monitor and enforce capacity limits and resource allocation across clusters and resource pools.
• Define and implement minimal operations agreements for degraded or failure scenarios.
• Collaborate with storage, network, and cloud teams to resolve cross‑domain infrastructure issues.

Required profile

• 5+ years of experience in enterprise virtualization environments.
• Strong expertise in virtualization platform administration, including high availability, load balancing, and live migration.
• Hands‑on experience with clustering and workload migration across virtualization platforms.
• Proficiency with performance monitoring and troubleshooting tools.
• Solid understanding of storage technologies used in virtualized environments.
• Experience with scripting for automation and operational efficiency.
• Strong troubleshooting mindset under pressure.
• Understanding of enterprise infrastructure dependencies across compute, storage, and networking.

Required skills

• Virtualization platform administration
• High availability and load balancing
• Live migration and clustering
• Performance monitoring and troubleshooting
• Storage technologies (shared and networked storage)
• Scripting and automation
• Incident management and root cause analysis
• ITIL service management processes

What we offer

• Hybrid work model with up to three days remote per week.
• Additional medical insurance covering gym subscription.
• Team events, outreach activities and other extra benefits.
• Modern ergonomic office environment in a multicultural community.
• Professional development opportunities such as Udemy courses.