Job
- Level
- Experienced
- Job Field
- IT, System, Security
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Salary
- from 3.499 € Gross/Month
- Location
- Vienna
- Working Model
- Hybrid, Onsite
Job Summary
In this role, you will manage a high-security ICT infrastructure, focusing on network security, server administration, and the implementation of security measures. You will optimize processes and ensure compliance with strict security standards.
Job Technologies
Your role in the team
- We are seeking an experienced IT Administrator (m/f/d) to operate a high-security information and communication system.
- The role includes responsibility for a secure, stable, and fully auditable IT infrastructure.
- Core duties involve managing isolated network zones, administering on-premise server services, and implementing advanced security requirements.
- Operation and protection of an ICT system with strict separation of network domains ("red-black separation").
- Design, implementation, and monitoring of security-relevant network measures, such as firewalls, VLANs, gateways, filtering mechanisms, and data-diode-based transmission paths.
- Execution of security monitoring, log analysis, system hardening, and regular audits to ensure compliance.
- Management of user and access control concepts, including implementation of least-privilege and zero-trust principles.
- Operation and maintenance of local server environments (physical and virtual).
- Administration and monitoring of central services such as NAS systems (storage, backups, snapshots, quotas), Internal Git and GitLab instances, Authentication and directory services, Internal communication and collaboration systems.
- Planning and execution of updates, patches, security checks, and system optimizations.
- Automation of recurring tasks using scripting languages (e.g., Bash, Python, PowerShell).
- Ensuring smooth 24/7 operation of infrastructure components (including participation in an on-call rotation).
- Creation and maintenance of technical documentation, operating manuals, and security concepts.
- Close collaboration with security engineering, development, and management teams.
- Providing user support in a strictly regulated IT environment.
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Our expectations of you
Education
- Completed degree or relevant IT training (e.g., computer science, IT security, system administration) or equivalent professional experience.
Qualifications
- In-depth knowledge of Network segmentation and secure network architectures, Red-black separation concepts / domain separation, Linux and/or Windows server administration, Virtualization technologies (e.g., VMware, KVM, Proxmox), Storage systems (NAS/SAN), Git/GitLab operation, CI/CD services, and internal DevOps workflows.
- Familiarity with security standards (BSI guidelines, hardening guides, audit requirements).
- High reliability, sense of responsibility, and strong security awareness.
- Structured, documentation-focused working style.
- Strong team spirit and communication skills in interdisciplinary project teams.
- Willingness to work within complex, security-critical environments.
Experience
- Several years of experience administering security-critical IT systems.
- Experience with monitoring tools (e.g., Prometheus, Grafana, ELK stack) is an advantage.
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Job Locations
Topics that you deal with on the job
This is your employer
Quantum Technology Laboratories
qtlabs is an emerging company in the field of quantum communication, founded in 2017 by renowned scientists. It specializes in the development of advanced communication systems based on quantum mechanics.
Description
- Company Type
- Startup
- Working Model
- Hybrid, Onsite
- Industry
- Science, Research
IT Administrator High Security ICT System
- Salary
- from 3.499 € Gross/Month
- Location
- Vienna
- Working Model
- Hybrid, Onsite
