Software Engineer – Networking & Drivers (DPU Team) (f/m/x)

As part of the DPU software group, you will develop and optimize networking software, drivers, and data path components for high-performance data processing. We have multiple openings for both junior and senior engineers, depending on experience level. You will work on cutting-edge Linux-based C/C++ systems, contributing to device driver development, packet processing frameworks, and system bring-up for next-generation DPU products. By joining us, you become a member of the Embedded Competence Center at Sii is an internal organizational unit, bringing together more than 500 specialists nationwide! We are currently working on about 100 projects for 50 clients from various industries including automotive, IoT, telecommunications and medical. Your tasks • Develop and maintain DPU drivers and networking software stacks • Integrate and optimize fast-path packet processing components • Debug and profile data path performance issues • Collaborate with hardware and firmware teams on feature enablement and bring-up • Participate in design reviews, code reviews, and continuous integration efforts Requirements • 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 Nice to have • Experience in device driver design, debugging, and testing (kernel or user space) • Previous work 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 What we offer • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more  • Comfortable workplace – class A offices or remote work  • Dozens of fascinating projects for prestigious brands from all over the world  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose  • Fantastic atmosphere created by all Sii Power People  If you want to work on systems with high operational significance — apply now!