At Aleph Alpha, we are shaping the future of AI with European values at the core. The heart of our product is developing cutting-edge generative AI solutions with a strong emphasis on sovereignty, ethical development, and societal benefit. Our generative AI offering empowers businesses, governments, and individuals to achieve their full potential. Building world-class AI solutions requires a robust and secure technological backbone. Our Infrastructure Team ensures the scalability, reliability, and security of Aleph Alpha’s sovereign AI, enabling us to deliver cutting-edge innovation with confidence. As a Senior Network Engineer at Aleph Alpha, you will play a critical role in managing and evolving the network infrastructure that powers our AI research and model training operations. You will be responsible for ensuring the stability, security, and scalability of our enterprise network across multiple datacenter locations. Your responsibilities: Design, implement, and maintain enterprise network infrastructure including routing, switching, and VLAN configurations Manage and optimize firewall and security configurations to ensure compliance with high-security standards Ensure full operational functionality of GPU clusters supporting large-scale AI/ML workloads Build redundancy and establish standards to guarantee uninterrupted operations Plan and prepare network infrastructure for datacenter expansion — locally and internationally Collaborate with cross-functional teams including HPCM, DevOps, and Security Document network configurations, processes, and best practices Your profile: Several years of experience in enterprise network management Strong knowledge of routing, switching, VLANs, and firewall administration Experience in high-security network environments Familiarity with Fortinet/FortiGate firewalls (preferred) Experience with Aruba and/or HPE networking equipment is a plus Ability to work independently and adapt quickly to new technologies Strong problem-solving skills and a proactive mindset Fluent in English; German is a plus What you can expect from us: Become part of an AI revolution! 30 days of paid vacation Access to a variety of fitness & wellness offerings via Wellhub Mental health support through nilo.health JobRad® Bike Lease Substantially subsidized company pension plan for your future security Subsidized Germany-wide transportation ticket Budget for additional technical equipment Flexible working hours for better work-life balance and hybrid working model Virtual Stock Option Plan