Logo Wünsch AG

IT system administrator

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Job

  • Level
    Senior
  • Job Field
    IT, System
  • Employment Type
    Full Time
  • Contract Type
    Permanent employment
  • Location
    Ditzingen
  • Working Model
    Onsite
  • Job Summary

    In this role, you operate and enhance our network and system infrastructure, manage a customer platform on Linux, and implement IT security measures, while independently shaping our data center architecture.

    Job Technologies

    Your role in the team

    • You operate and develop our internal network and system infrastructure further - Windows clients, servers, security, backup, both physical and virtualized.
    • You manage our customer platform on the Linux / Proxmox / JBoss WildFly / PostgreSQL stack - reliably, securely, and efficiently.
    • You plan and oversee the development of our data center architecture - with a clear Open-Source-First philosophy and without external cloud dependency.
    • You design and implement IT security measures: network segmentation, firewalls, system hardening, vulnerability analysis.
    • You recognize when something can be improved – and you make a suggestion. Then you implement it. Short paths, real impact.

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    Our expectations of you

    Education

    • Completed IT apprenticeship or degree, at least 5 years of practical experience in system administration.

    Qualifications

    • Excellent knowledge of Windows environments, solid understanding of Linux server environments.
    • Proficient in routing, switching, firewalls, and network monitoring.
    • Strong security awareness - you think in attack vectors, not just checklists.
    • Open-source affinity: You understand why having control over the stack is better than convenience on third-party servers.
    • You work independently and in a structured manner – and you know when to solve a problem on your own and when it is more efficient to ask the team. Both are explicitly encouraged here.
    • If you do not yet cover all points, it is important to us that you are willing to build the knowledge.
    • Fluent in spoken and written German.

    Experience

    • Proxmox experience is a real plus.

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    What we offer

    • You decide what our infrastructure looks like. No architecture committee, no corporate standard that ties your hands.
    • We don't buy what's trendy right now. We invest in what lasts. Open Source, well thought out, sustainable.
    • You are the sole admin, but you work with developers who respect the infrastructure, and leadership that understands and strongly supports technical decisions.
    • We operate with scheduled maintenance windows and clear substitution policies for your vacation.
    • Small units, short communication channels, no departmental boundaries. What you build, you see in action. What you improve, makes an immediate difference.
    • Customized training and certifications tailored to your role – not a standard catalog.
    • Modern hardware & quiet working environment - Small office units that enable focused work.

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    Benefits

    Health, Fitness & Fun

    Topics You Will Work On

    Job Locations

    • Location Ditzingen

      71254 Baden-Württemberg

      Germany

    About Your Employer

    Wünsch AG

    Wünsch AG

    Since 1991, Die Wünsch AG has established itself as a leading IT consulting firm. We combine business and IT knowledge to create value-added solutions, and our decades of experience allow us to tailor each solution to our clients' individual needs.

    Description

  • Founding Year
    1991
  • Company Type
    Digital Agency
  • Working Model
    Onsite
  • Industry
    Internet, IT, Telecommunication
  • Logo Wünsch AG

    IT system administrator

    Location
    Ditzingen
    Working Model
    Onsite
    Diversity
    Open for all genders

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