Minimum 5 years of commercial experience in a similar position, Hands-on C/C++ development experience on Linux, Experience in networking systems: NICs, packet processing, data plane, or I/O stacks, Understanding of Ethernet/IP/TCP/UDP networking protocols, Familiarity with Linux kernel internals and driver APIs, Experience with debugging tools, git, and CI/CD workflows, Good knowledge of spoken and written English (everyday communication), Strong analytical mindset, ownership, and collaborative attitude, Residing in Poland required, Experience in device driver design, debugging, and testing (kernel or user space), Experience with DPDK fast-path applications and optimization, Hands-on SW/HW integration (PCIe, DMA, interrupts, counters, telemetry), Knowledge of congestion/flow control and high-rate packet processing, Understanding of RDMA (verbs, QPs, completion model, transport semantics), Experience with unit/integration testing and performance observability tools