System Administrator - VMWare ESXi/vSphere (REF4915G) - Budapest

As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries.

DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

We are looking for a skilled System Administrator with expertise in VMWare ESXi/vSphere to join our IT team. The successful candidate will be responsible for the day-to-day administration, maintenance, and support of our virtualized environments, ensuring their reliability and efficiency.

Key Responsibilities:

VMWare Environment Administration:

• Install, configure, and manage VMWare ESXi hosts and vSphere environments.
• Perform regular updates, patches, and upgrades to VMWare infrastructure.
• Monitor system performance and troubleshoot issues to ensure optimal operation.

Virtual Machine Management:

• Create, deploy, and manage virtual machines according to business needs.
• Perform regular backups and restorations of virtual machines and configurations.
• Ensure virtual machines are configured for high availability and disaster recovery.

System Maintenance and Support:

• Conduct routine system checks and maintenance tasks to ensure system health.
• Provide technical support and resolve issues related to VMWare environments.
• Maintain accurate documentation of system configurations, changes, and procedures.

Security and Compliance:

• Implement security best practices within the VMWare environment, including access controls and patch management.
• Ensure systems comply with organizational policies and industry standards.
• Conduct regular security audits and vulnerability assessments.

Resource Management:

• Monitor and manage resource allocation (CPU, memory, storage) within the VMWare environment.
• Perform capacity planning to ensure sufficient resources for current and future needs.
• Optimize resource usage to enhance system performance and efficiency.

Network and Storage Integration:

• Configure and manage virtual networks within VMWare environments.
• Integrate and manage storage solutions (SAN, NAS) with VMWare infrastructure.
• Troubleshoot network and storage issues impacting the virtual environment.

Collaboration and Training:

• Work closely with other IT team members to support ongoing projects and initiatives.
• Provide training and support to end-users and junior staff on VMWare tools and best practices.
• Participate in the development and implementation of IT policies and procedures.

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Proven experience as a System Administrator with a focus on VMWare ESXi/vSphere.
• Strong knowledge of VMWare vCenter and related virtualization technologies.
• Familiarity with network and storage concepts and their application in a virtualized environment.
• Relevant certifications (e.g., VCP) are preferred.

Skills:

• Proficiency in VMWare ESXi and vSphere administration.
• Experience with VMWare tools such as vCenter and PowerCLI.
• Strong understanding of networking concepts (VLANs, DNS, DHCP, TCP/IP).
• Knowledge of storage systems (SAN, NAS) and their integration with VMWare.
• Ability to troubleshoot and resolve technical issues efficiently.
• Excellent communication and documentation skills.

* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.