Network Engineer (m/f/d)

Polarise SARL; Deutschland; Remote; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Remote work model

Onboarding and hardware setup

Company merchandise and benefits

Job summary

Polarise SARL seeks an experienced network engineer to design, implement, and operate a modern IPv6-based BGP fabric for AI/HPC workloads. You will evolve the data-center platform, integrate bare-metal Kubernetes clusters, and manage firewall/load balancing within enterprise environments.

You’ll contribute to 24/7 operation and occasional EU travel to data center locations. Strong expertise in BGP fabrics, IPv6, and SDN is required, with English at least level B2 and German a plus.

Qualifications

• Hands-on design, implementation, and operation of modern data center networks.
• Strong expertise in BGP-based fabric architectures and IPv6.
• Experience with firewall and load balancing in production environments.
• Structured, self-driven work style with ownership of critical infrastructure.
• English at least B2; German a plus.

Responsibilities

• Design, implement, and operate IPv6-based BGP fabric in data centers.
• Evolve network platform for AI and HPC environments.
• Integrate bare-metal Kubernetes clusters into the BGP fabric.
• Plan and operate firewall and load balancing solutions.
• Support 24/7 monitoring and on-call rotations; travel to locations as needed.

Skills

BGP fabric

IPv6

Firewall & load balancers

Kubernetes

Cilium

SDN

InfiniBand fabrics

AI / HPC networking

On-call rotation

Tools

NVIDIA Spectrum switches

NVIDIA Quantum switches

Cumulus Linux

InfiniBand

Kubernetes

BGP-based fabric tooling

Job description

Your mission

• You design, implement, and operate our modern IPv6-based BGP fabric.
• You continuously evolve our network platform for AI and high-performance computing environments.
• You support the integration of our bare-metal Kubernetes clusters into the existing BGP fabric.
• You plan, implement, and operate firewall and load balancing solutions for our data center infrastructure.
• You actively contribute to the build-out of new data center locations and are responsible for integrating networking into existing platforms.
• You automate recurring network processes and ensure effective monitoring of our infrastructure.
• You design, implement, and operate high-performance InfiniBand fabrics for AI workloads.
• You analyze complex network incidents and ensure stable, highly available 24/7 operations.
• You play a key role in shaping our future network architecture and contribute your own ideas and technical standards.

Your profile

• You have several years of hands-on experience in the design, implementation, and operation of modern data center networks.
• You possess strong expertise in BGP-based fabric architectures and are confident working with IPv6.
• You have experience with firewall and load balancing solutions in production enterprise or data center environments.
• You work in a structured and self-driven manner and enjoy taking ownership of critical infrastructure.
• You have excellent English language skills (minimum B2); German language skills are a plus.
• You are an EU citizen or hold a valid work permit for Germany. Ideally, you are based in Germany.
• You are willing to participate in a 24/7 on-call rotation and occasionally travel to data center locations or team meetings.

Ideally, you also bring:

• Experience with NVIDIA Spectrum switches and Cumulus Linux.
• Experience with NVIDIA Quantum switches and InfiniBand environments.
• Knowledge of Software Defined Networking (SDN).
• Experience working with Kubernetes, particularly with Cilium.
• A passion for modern AI, HPC, and cloud infrastructures.

Why us?

• Meaningful Work: Help shape the story of one of Europe’s most exciting AI infrastructure companies from the very beginning and contribute to strengthening Europe’s technological independence in AI.
• High Degree of Ownership: Work closely with senior leadership and actively shape the technical foundation of our platform. Your decisions will have a direct impact on scalability, reliability, and the developer experience across our teams.
• Strong Team: Become part of a growing, highly motivated engineering team and collaborate closely with experienced engineers and technical leaders.
• Remote Work Model: Work in a way that helps you truly balance your professional, family, and personal life.
• Thoughtful Onboarding: Look forward to a structured onboarding plan, a welcome package with company merchandise, and your preferred hardware setup (MacBook Pro or ThinkPad).
• Room to Grow: Actively shape your role and develop it in directions that match your strengths and interests, whether in platform architecture, cloud infrastructure, reliability engineering, or developer experience.
• Attractive Benefits: Benefit from attractive employee offers and exclusive discounts with numerous brands and providers, JobRad bicycle leasing, contributions to your company pension plan and Germany Ticket, as well as the opportunity to work temporarily from within the EU. And because we are a fast-growing scale-up, we continuously evolve and expand
  the benefits package.