IT System Administrator – Teilzeit

About the role

You are responsible for day-to-day IT operations at C1 Green Chemicals AG – infrastructure, security, and devices. Our research depends on stable and secure IT operations, with a robust, sovereign IT setup being mission-critical.

What you'll do

• Own & operate our IT infrastructure: self-hosted servers, storage, networking, backups, and availability
• Ensure data sovereignty for sensitive research and IP data
• Microsoft 365 & Azure administration: tenant, Entra ID, applications, and operations
• Device management (Intune or equivalent) for laptops & smartphones (BYOD), clean onboarding/offboarding
• Set up and operate VPNs and secure remote access
• Linux server operations, including SLURM cluster for DFT compute (WEASEL/ORCA) and tested disaster recovery
• Continuous IT security monitoring, system hardening, access control, and audit-grade traceability
• Act as the central IT point of contact across the company

What you'll need

• Senior-level experience in IT operations, IT security, and system hardening
• Strong Linux server administration, self-hosted services, and Docker
• Hands-on experience with Microsoft 365, Azure, Entra ID, Intune
• Solid networking and VPN expertise
• Understanding of GDPR and protection of pre-patent IP
• Self-directed, pragmatic mindset with clear ownership
• Fluent German and English

Nice to have

• HPC/SLURM, GPU or compute servers
• Experience with LLM APIs and basic cost control
• Supporting research or lab environments

What they offer

• Permanent part-time role with long-term perspective
• Flexible working hours and hybrid work options
• High autonomy in hands-on IT operations
• Direct access to leadership and research teams
• Purpose-driven work in green chemistry and industrial scale-up