HPC Network Engineer
RemoteJapan
Job Summary
Design, deploy, and maintain InfiniBand and Ethernet network infrastructures while troubleshooting complex connectivity, latency, and performance degradation issues across hybrid environments. Manage high-performance components including switches, Host Channel Adapters, and subnet managers, alongside implementing network security and firewall technologies such as Fortinet solutions. Monitor network health, perform capacity planning, and collaborate with compute and storage teams to support HPC and AI workloads. Participate in incident response, on-call support, and drive operational improvements by documenting architectures and automating workflows with Ansible and Terraform.
Required Qualifications
- Proven experience in networking, system engineering, or data center infrastructure roles
- Solid understanding of networking fundamentals, including TCP/IP, routing protocols (BGP, OSPF), switching, VLANs, QoS, and network design
- Hands-on experience or strong familiarity with Linux operating systems and command-line tools
- Effective verbal and written communication skills in English, with the ability to collaborate in a global team environment
- Strong analytical and problem-solving skills to diagnose and resolve complex network challenges
Desired Qualifications
- Exposure to or hands-on experience with InfiniBand fabrics and high-performance networking concepts (e.g., NVIDIA/Mellanox)
- Familiarity with or certifications in enterprise firewall technologies (e.g., Fortinet FCSS/FCNSP, CCNP/CCIE)
- Experience with large-scale HPC clusters, AI/ML infrastructure, or distributed systems environments
- Knowledge of RDMA, MPI, and low-latency networking concepts
- Proficiency in scripting languages (e.g., Python, Bash) and Infrastructure-as-Code (IaC) tools for automation
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