IT System Administrator

About Zertificon Solutions GmbH

Zertificon Solutions has been a software manufacturer since 2004, specializing in IT security. Our products encrypt corporate communication, and our Z1 encryption solutions are already utilized by over 25% of Germany's top 100 revenue-generating companies, alongside hundreds of medium-sized businesses across various industries. We are committed to continuous growth and have many more plans in store. With almost 140 employees currently based in Neukölln, we invite you to join our professional, highly qualified team. Embrace challenges, share your knowledge, learn new skills, and discover your full potential!

Your Responsibilities as an IT System Administrator

• Planning, installation, configuration, operation, and optimization of IT infrastructure and existing systems.
• Administration of server environments (Windows & Linux), including updates, patch management, and upgrades.
• Operation and further development of virtualization (e.g., VMware, Hyper-V) and Docker-based environments.
• Analysis, processing, and resolution of disruptions, incidents, and alerts.
• Documentation of system configurations and operating processes.

Your Profile

• At least 2 years of professional experience as an IT System Administrator.
• Very good knowledge of Windows server environments and experience in Linux server administration (e.g., Ubuntu, Debian, CentOS).
• Experience with virtualization technologies (VMware, Hyper-V or comparable) and good knowledge of Docker/containerization.
• Strong analytical abilities and comprehensive troubleshooting know-how.
• Basic understanding of Cyber-Security principles.
• German and English language skills at a minimum B2 level.

What We Offer

• Flexible working hours and home office possibilities.
• Mobility benefits: Free Deutschlandticket, Job-Rad-Leasing, or parking.
• Subsidies for food (e.g., Lieferando) and internet for home office.
• Office perks: Rooftop terraces & green inner courtyard, organic fruit and drinks, parcel acceptance service.
• Social gatherings: Pizza Friday in the office, regular team events, and a large summer party.

Why Zertificon?

Zertificon stands for securing digital business. We develop IT security solutions made in Germany that companies trust and enjoy using.

• Independent & Convinced: For over 20 years, we have been developing secure communication solutions as an owner-managed company, fostering sustainable growth and strong principles.
• Security with Meaning: We believe in the freedom of digital communication. If you believe Edward Snowden was right, we might share values. As a sign of our conviction, we donate €1,000 to an organization supporting Edward Snowden after your probation, if you mentioned him in your application.
• Excellence through Practice: We tackle complex challenges because we are capable. Our internal experts are among the best, and even external specialists often learn from us. When we want the best result, we do it ourselves.
• Agile by Conviction: We think fast, act pragmatically, and continuously improve. No bloated processes or