Administrator systemu

Why Billennium?

We are a global technology company providing IT services and digital solutions to clients around the world. Headquartered in Poland, with offices in Canada, Malaysia, Germany, Switzerland and India, we bring together over 1,700 professionals who share one mission -to harness technology and innovation to make the world run better. At the heart of Billennium is our vibrant and people-centric culture, where everyone’s potential matters. We embrace diversity, inclusion, and flexibility, empowering our employees to grow and thrive.

Our values - captured by the acronym TIGER - define who we are and how we work: Trust, Innovation, Growth, Energy, Responsibility – guide us in everything we do.

About the Client:

Our client is a leading company in the residential real estate sector, recognized for delivering high-quality housing developments and creating modern, sustainable living spaces. With a strong market presence, a proven track record of successful projects, and a commitment to innovation, the organization continuously invests in digital transformation and advanced technologies to support its growing operations. Joining this company means becoming part of a stable and forward-thinking environment where technology plays a key role in ensuring operational excellence, security, and business growth.

We are looking for a System Administrator responsible for the maintenance and administration of Linux and Windows Server environments. The successful candidate will be responsible for managing server infrastructure, virtualization platforms, monitoring systems, security solutions, and backup systems.

What you will do:

• Administration of Linux systems.
• Administration of Windows Server environments (2012–2025).
• Management and maintenance of the Proxmox virtualization platform.
• Administration of the Zabbix monitoring system.
• Administration of the Wazuh security platform.
• Management and administration of Active Directory services.
• Administration of Certificate Authority (CA) services.
• Management of the Microsoft Entra ID environment.
• Administration of the Veeam Backup solution.
• Ensuring the availability, reliability, and continuous operation of assigned systems and services.

Why you?

• Proven experience in Linux system administration.
• Proven experience in administering Windows Server environments (2012–2025).
• Strong knowledge of and hands-on experience with the Proxmox virtualization platform.
• Experience in administering the Zabbix monitoring system.
• Experience in administering the Wazuh security platform.
• Good knowledge of Active Directory services.
• Knowledge of Certificate Authority (CA) services and Public Key Infrastructure (PKI).
• Familiarity with Microsoft Entra ID administration.Experience working with Veeam Backup solutions.

Benefits

• Professional development – continuous learning opportunities and internal mobility.
• Comprehensive benefits – enjoy Udemy for Business and Worksmile platform.
• Flexibility – adaptable working hours and remote/hybrid work options.
• Global collaboration – work with diverse international teams across continents.
• Innovative environment – be part of a forward-thinking, growth-oriented workplace.
• Team-building traditions – including our annual company event.