**Zertificon Solutions – Software Manufacturer since 2004.**
We are IT security specialists: our products encrypt business communications. More than 25% of the 100 highest-revenue companies in Germany, as well as hundreds of medium-sized enterprises across all industries, already use our Z1 encryption solutions. We have big plans and continue to grow steadily. Nearly 140 employees are already working with us in Neukölln. Join our professional, highly qualified team: take on challenges, share your knowledge, learn new things, and discover your potential!

**Your Responsibilities**

- Planning, installing, configuring, maintaining, and optimizing IT infrastructure and existing systems
- Administration of server environments (Windows & Linux), including updates, patch management, and upgrades
- Operation and development of virtualization environments (e.g. VMware, Hyper-V) and Docker-based infrastructures
- Monitoring, analyzing, and resolving incidents, alerts, and system issues
- Documentation of system configurations and operational procedures

**Your Profile**

- At least 2 years of experience as an IT System Administrator
- Strong expertise in Windows Server environments and experience with Linux server administration (e.g. Ubuntu, Debian, CentOS)
- Experience with virtualization platforms (VMware, Hyper-V, or similar) and solid knowledge of Docker/containerization
- Strong analytical thinking and troubleshooting skills
- Basic understanding of cyber security principles
- German and English language skills at minimum B2

**Our offer**

- **Flexible working hours** and home office possible
- **Mobility: **free Germany ticket, job bike leasing or car parking
- **Allowances **for food (e.g. Lieferando) and internet in the home office
- **Benefits in the office: **Roof terraces & green courtyard, organic fruit and drinks, parcel acceptance
- **Get-together: **pizza Friday in the office, regular team events, big summer party

**Why Zertificon?**

Zertificon stands for *securing digital business*. We develop trusted IT security solutions "Made in Germany" – built for businesses that value both protection and usability.

- **Independent & committed:** For over 20 years, we’ve built secure communication tools – as an owner-managed company with a clear stance
- **Purpose-driven:** We believe that digital communication must be secure and free. If you think Edward Snowden did the right thing as a whistleblower, we might just share the same values. As a sign of our support, we donate €1,000 to an organization that supports Edward Snowden for every new hire who mentions him in their application
- **Hands-on excellence:** We take on complex challenges because we can. Our in-house experts are top-tier – even external specialists often learn from us. When we want the best, we build it ourselves
- **Agile by conviction:** We think fast, act pragmatically, and improve continuously. No bloated processes, no “that’s just how it’s always been done.” Initiative is welcome – but of course, it will be challenged, and not every idea will make it through unchallenged
- **Security that works:** We build software that’s not only secure, but actually usable – not just for large enterprises with dedicated highly skilled IT teams, but also for small and mid-sized businesses that need strong security without the complexity
- **Diverse & international:** Our team of 130 people from 30+ countries shares one mission: making secure digital communication easily accessible to businesses of all sizes

**If that resonates with you, we’d love to hear from you.**

Want to know more? Please have a look at our Work at Zertificon page: [https://www.zertificon.com/en/it-jobs-berlin/work-at-zertificon](https://www.zertificon.com/en/it-jobs-berlin/work-at-zertificon)

**Questions?**

You can reach our HR team at

[jobs@zertificon.com](https://mailto:jobs@zertificon.com)