Network Engineer (AI/HPC)

TL;DR

Network Engineer (AI/HPC): Designing, maintaining, and optimizing large-scale InfiniBand and Ethernet networks for AI factories and HPC environments with an accent on low-latency performance and network efficiency. Focus on diagnosing network issues at scale, implementing complex routing protocols, and ensuring high-bandwidth connectivity for AI workloads.

Location: Hybrid – South Korea (Must be based in Seongnam-si, Gyeonggi-do with 3 days in office)

Company

hirify.global is a Nasdaq-listed AI Factory Platform Company specializing in high-performance computing (HPC) and AI infrastructure for enterprises and neocloud providers worldwide.

What you will do

• Monitor, maintain, and upgrade InfiniBand and Ethernet network equipment at scale.
• Perform hardware diagnostics and replace failing components within a large-scale data center.
• Collaborate with software and network engineering teams to optimize cybersecurity and network efficiency.
• Develop automation tools and maintain meticulous technical documentation for internal and external build instructions.
• Supervise on-site staff during hardware updates and participate in a weekly on-call rotation.
• Support a Linux-based HPC and AI environment featuring various advanced technologies.

Requirements

• 6+ years of hands-on experience with enterprise-scale networks.
• In-depth knowledge of data center environments, servers, and L2/L3 network protocols.
• Experience administering both InfiniBand (Mellanox/NVIDIA) and Ethernet (Cumulus/SONiC) networks.
• Location: Must be based in South Korea and able to work hybrid (3 days in office).
• English: Proficiency required to communicate effectively with global team members and clients.

Nice to have

• Experience with VXLAN and EVPN architectures and routing protocols such as BGP and OSPF.
• Knowledge of communication libraries including NCCL, UCX, and MPI.
• Familiarity with network management software such as UFM, OpenSM, or NetQ.
• Proven practice in low-latency and high-bandwidth networking performance optimization.

Culture & Benefits

• Opportunity to shape the future of AI by building AI factories for sovereign initiatives and enterprises.
• Culture of servant leadership that values ideas over hierarchy and encourages employee ownership.
• Focus on continuous learning and exposure to advanced AI tools and technologies.
• Flexible work environment focused on outcomes rather than rigid structures.