IT System Engineer / System Technician Intern, 60-100% (m/f/d)

14 August 2026
60 – 100%
Wallisellen

Job summary

KastGroup AG focuses on Cyber Security and safe network infrastructure. Join us for a dynamic work environment and growth opportunities.

Tasks

Manage Linux Administration and virtualization technologies.
Oversee network security using OPNsense, Unifi, and more.
Work with container technologies like Docker and Kubernetes.

Skills

Basic knowledge of technologies is a plus; eagerness to learn is essential.
Strong communication skills in German and English.
Passion for tackling challenging goals and sharing knowledge.

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About the job

Company Description

The KastGroup AG, headquartered in Wallisellen, specialises in the fields of Cyber Security and secure network infrastructure. Since 2014, we have been supporting organisations of various sizes with our services in identifying and achieving appropriate security goals or expanding and optimising existing network infrastructures.

Our expertise as well as our specialist know-how make us a competent partner and our team philosophy the ideal employer for currently 25 employees. We grow together through new challenges, bring passion, and do not just do a job, but deliver complete work.

Job Description

To expand our team, we are looking immediately or by arrangement for a talented individual for the following tasks:

Linux administration
Virtualisation (VM, Proxmox, VMWare)
Network (OPNsense, Unifi, Mikrotik, Sophos, Fortigate FW)
Containers (Docker, Kubernetes / K8s)
Monitoring (PRTG)
Self-hosting & on-premises hosting

Qualifications

We do not expect you to meet all requirements. Ideally, you have already acquired basic knowledge and want to deepen your skills and abilities with us.

You want to continuously expand your knowledge of new technologies and share it with others
You love challenges and achieving demanding goals
You are open, communicative, and can communicate easily in German and English (any additional language is naturally an advantage)

Additional Information

Flexible working models
Home office by arrangement
25 days (5 weeks) holiday per year
Paid training & certifications
Free coffee as well as various soft drinks
Team events and after-work aperitifs (of course voluntary)
Pool table, table football & games console available
Modern office within a short walking distance to Wallisellen station
Ergonomic workplace with electric standing desk
Flat hierarchies and co-determination rights

How to apply

Please submit your application directly via our online form.

If you have any questions about the position or our company, please feel free to note them directly in the comment field of the online application form.

If a personal conversation is more important to you, you can reach our HR specialist, Ms Kast, on Tuesdays and Wednesdays at +41 44 521 28 65.

Information for recruitment agencies and service providers

For this position, we only consider direct applications. Thank you for your understanding.