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

Bitdeer is a world-leading technology company for Bitcoin mining and AI cloud.

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• InfiniBand fabrics: fat-tree, rail-optimized, and dragonfly topologies for GPU clusters of 100–10,000 GPUs.
• RoCEv2 networks across Nvidia, Arista, and Cisco platforms for RDMA workloads.
• UFM (Unified Fabric Manager) for IB fabric monitoring, diagnostics, and subnet management.
• IB and RoCE performance monitoring and tuning: adaptive routing, congestion control (DCQCN/ECN), traffic isolation.
• NCCL communication tuning: topology detection, ring/tree algorithm selection, GDR configuration.
• Firmware lifecycle across IB switches and HCAs.
• Fault diagnosis: link flaps, symbol errors, packet drops, routing anomalies, credit stalls.
• Coordination with Nvidia/Mellanox support for escalations, bugs, and RMA.

• Wire IB/RoCE telemetry (ibdiagnet, perfquery, ibstat, PortRcvErrors, PortXmitDiscards, adaptive-routing state) into the platform's collection pipeline.
• Partner with the platform team to define the Link and Straggler predictors: what a "bad optic 30 minutes from failure" looks like in the counters.
• Convert every incident into a labeled example the fault-prediction engine can learn from — and every routine mitigation into a workflow the remediation actuator can run.

• 5+ years in data center networking, with at least 3 years focused on InfiniBand or RoCE fabrics
• Hands-on experience deploying and operating Nvidia/Mellanox InfiniBand switches at scale
• Strong understanding of IB subnet management, partitioning, and QoS
• Experience with RoCEv2 deployment including PFC, ECN, DCQCN configuration
• Proficiency with UFM or equivalent IB fabric management tools
• Knowledge of 400G/800G optics, cabling standards, and structured cabling best practices
• Experience diagnosing IB/RoCE network issues using ibdiagnet, perfquery, ibstat, and similar tools
• Understanding of NCCL and how GPU communication maps to network topology
• Instinct for telemetry-driven ops — you've either built dashboards/alerts on RDMA counters at scale, or you can articulate the feature set a fabric-health model would need.
• Runbook-as-code mindset — the diagnostics you run today should become automation next quarter.

• A culture that values authenticity and diversity of thoughts and backgrounds;
• An inclusive and respectable environment with open workspaces and exciting start-up spirit;
• Fast-growing company with the chance to network with industrial pioneers and enthusiasts;
• Ability to contribute directly and make an impact on the future of the digital asset industry;
• Involvement in new projects, developing processes/systems;
• Personal accountability, autonomy, fast growth, and learning opportunities;
• Attractive welfare benefits and developmental opportunities such as training and mentoring.

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