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Location: Kraków (hybrid or remote) / Poland Company: AI Hardware Startup About the company Our client is a deep-tech AI hardware startup, founded in 2019 in Israel, building next-generation AI infrastructure. ~70 engineers globally, highly senior team Strong core R&D in Israel, growing hub in Kraków ~$70M total funding (Series A + follow-up rounds) Full-stack hardware & software development: from architecture to silicon bring-up The company develops a custom AI SoC, with a strong focus on high-performance networking and HW–SW co-design. About the role We are looking for a Senior Networking Software Engineer to take a key role in designing and developing networking software for a complex AI SoC. This is a system-level, low-level role - focused on C, Linux networking, embedded systems, and HW–SW interfaces, not IT or enterprise networking. You will work closely with hardware, firmware, and architecture teams and be involved across the full product lifecycle. Responsibilities Design and implement networking software for a custom AI SoC Develop Linux networking components and performance-critical data paths Participate in SoC architecture discussions and definition of HW–SW interfaces Work on embedded Linux and embedded cores in a high-throughput, multi-threaded environment Support pre-silicon validation, bring-up, and post-silicon development Collaborate with firmware, hardware, and system architects Requirements (must-have) BSc or MSc in Computer Science, Computer Engineering, or Electrical Engineering Strong hands-on experience in C Solid experience with Linux networking and networking protocols Experience with embedded systems and HW–SW integration 5+ years of relevant software / system-level engineering experience Nice to have Experience with RDMA / RNIC Experience with bare metal or firmware Experience with PCIe, DMA, or device-level communication Background in SoC, semiconductor, AI hardware, or networking silicon Location & work format Kraków: hybrid or remote (local hub currently forming) Poland: remote Close collaboration with Israel-based core R&D team Why this role Work on state-of-the-art AI hardware and networking technology Very senior, low-ego engineering team High impact on architecture and product decisions Rare opportunity to work end-to-end: architecture → silicon → product