QA Engineer | L2/L3 Protocols, Networking , Python , Testing, Manual Testing | 8-12 years
Core
Designing, testing, and optimizing high-performance AI data center fabrics (400G/800G Ethernet, RoCEv2, NVMeoF) to ensure lossless behavior and superior performance for AI/GPU workloads.
Role type
Senior IC Network Performance Engineer (Data Center Fabrics)
Builds
Next-generation lossless Ethernet fabrics, IP-routed VxLAN fabrics, and NVMeoF stacks for AI clusters.
Domain
Data Center Networking, High-Performance Computing (HPC), AI Infrastructure
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
RDMA/RoCEv2/NVMeoF architecture, Linux/Ubuntu system tuning, Python scripting, network protocol debugging (BGP, VxLAN, TCP), hardware traffic generation, NIC offload configuration
Preferred skills
Network telemetry (SNMP, gNMI, Prometheus), InfiniBand testing, Cisco Nexus 9K, SPDK/DPDK, CI/CD automation (Jenkins)
Technologies
Linux, Ubuntu, Python, pytest, Ansible, RoCEv2, NVMeoF, 400G/800G Ethernet, Spirent, Ixia, InfiniBand, BGP EVPN, PFC, ECN
Responsibilities
Configure and validate Linux servers and network switches for RoCEv2 and NVMeoF traffic generation; Perform system-level tuning including kernel parameters, NUMA, and NIC offloads; Execute NVMeoF traffic tests using software and hardware tools; Troubleshoot Layer 2/3 networking issues and flow control problems; Analyze fabric metrics (latency, throughput, packet loss) to identify performance gaps; Create test plans, automation documentation, and performance reports.
Seniority
Senior, hands-on IC
