Sr. GPU Cloud East-West Network Expert (SRE SME)

Location: Singapore, SG / Penang, Malaysia

Company

hirify.global provides Bitcoin mining solutions, AI cloud capabilities, ASIC hardware, and datacenter infrastructure and operations.

What you will do

• Design, deploy, operate, and optimize InfiniBand fabrics using fat-tree, rail-optimized, and dragonfly topologies for GPU clusters ranging from 100 to 10,000 GPUs.
• Manage RoCEv2 networks across Nvidia, Arista, and Cisco platforms for RDMA workloads.
• Monitor and tune IB and RoCE performance, including adaptive routing, DCQCN/ECN congestion control, traffic isolation, and NCCL communication.
• Manage UFM-based fabric monitoring, diagnostics, subnet management, firmware lifecycles, and fault investigation.
• Diagnose link flaps, symbol errors, packet drops, routing anomalies, and credit stalls, coordinating escalations and RMAs with Nvidia/Mellanox.
• Feed IB/RoCE telemetry into the AIOps platform and convert incidents and mitigations into labeled training data and automated remediation workflows.

Requirements

• 5+ years of data center networking experience, including at least 3 years focused on InfiniBand or RoCE fabrics.
• Hands-on experience deploying and operating Nvidia/Mellanox InfiniBand switches at scale.
• Strong knowledge of IB subnet management, partitioning, QoS, and RoCEv2 configuration with PFC, ECN, and DCQCN.
• Proficiency with UFM or equivalent InfiniBand fabric management tools and diagnostic utilities such as ibdiagnet, perfquery, and ibstat.
• Knowledge of 400G/800G optics, cabling standards, structured cabling, NCCL, and GPU-to-network topology mapping.
• Experience with telemetry-driven operations and a runbook-as-code approach to automation.

Culture & Benefits

• Inclusive environment that values authenticity and diverse perspectives.
• Startup-oriented setting in a fast-growing company.
• Opportunity to contribute to digital asset and AI cloud infrastructure projects.
• Autonomy, personal accountability, and opportunities for growth and learning.
• Training, mentoring, and welfare benefits.