Senior Network Engineer (AI/HPC)

Location: Hybrid in South Korea, with 3 days in the office. Conditions: Seongnam-si, Gyeonggi-do, South Korea

Company

hirify.global is a global technology company that designs, builds, deploys, and manages high-performance AI, HPC, memory, compute, and infrastructure solutions.

What you will do

• Develop network configurations and architectures for projects and technology roadmaps.
• Design, enhance, maintain, and upgrade InfiniBand and Ethernet networks.
• Validate network infrastructure with solutions architects and field engineers against customer requirements.
• Diagnose and resolve network issues at scale, coordinate escalations, and work with vendors and engineering teams.
• Support rack lifecycle processes and cloud-scale network and storage environments.
• Document configurations, procedures, and best practices while developing automation and operational tools.

Requirements

• 8+ years of hands-on experience with enterprise-scale networks.
• In-depth knowledge of data center environments, servers, and network equipment.
• Proven experience with NVIDIA InfiniBand and Ethernet networks using Cumulus, Arista, or Juniper.
• Experience installing, monitoring, maintaining, and documenting data center network equipment and processes.
• Ability to act as a technical escalation point, resolve problems, and communicate clearly with team members and clients.
• Participation in a weekly on-call rotation and willingness to respond to network and server errors after hours.

Nice to have

• Experience managing RDMA or RoCE environments.
• Experience with low-latency, high-bandwidth networking optimization.
• Knowledge of VXLAN, EVPN, BGP, and OSPF.
• Knowledge of HPC libraries and GPU networking technologies, including NCCL, UCX, MPI, NVLink, and NVSwitch.
• Familiarity with UFM or OpenSM.

Culture & Benefits

• Work in a fast-paced, complex managed services environment supporting HPC and AI workloads.
• Collaborate across internal teams, customers, vendors, and engineering organizations.
• Participate in continuous learning, technology research, knowledge-sharing, and team activities.
• Work in a flexible, outcome-focused environment that values ownership, innovation, and servant leadership.