Senior Network Engineer

Responsibilities:

• Design and implement high-performance packet I/O pipelines using DPDK or equivalent frameworks.

• Adapt existing UDP application code to work with NIC queue–driven RX/TX loops, batch processing, and hardware offloads.

• Configure and tune Linux servers for ultra-low latency: hugepages, NUMA awareness, CPU pinning, NIC driver binding, RSS/flow steering.

• Ensure reliable operation at very high packet rates; instrument detailed throughput, latency, and packet-loss metrics.

• Collaborate with the application team to integrate kernel-bypass transport with existing processing pipelines.

• Stay current with RDMA and user-space networking trends (DPDK, netmap, AF_XDP, eBPF/XDP) to evaluate trade-offs.

Requirements:

• Expert C/C++ in performance-critical networking code.

• Hands-on experience with DPDK or similar (AF_XDP, netmap, PF_RING) in production systems.

• Strong knowledge of Linux performance tuning and NIC hardware features (RSS, flow steering, checksum/jumbo offloads).

• Familiarity with RDMA (RoCE, InfiniBand, iWARP) concepts and when to use them vs. raw packet I/O.

• Experience with packet capture/analysis tools (tcpdump, Wireshark, perf).

• Strong problem-solving and debugging skills at the network + OS boundary.

Preferred industry backgrounds:

• High-frequency trading (HFT) / fintech — ultra-low-latency networking engineers.

• Telecom / 5G / packet core — engineers building EPC, UPF, or fronthaul solutions.

• Network security & DPI appliances — intrusion detection/firewall data plane developers.

• CDN / video streaming / media transport — high-performance transport engineers.

• HPC / storage networking — experience with RDMA, NVMe-oF, or cluster interconnects.