? Senior C++ Software Engineer – Hardware Systems ? Barcelona, Spain | Hybrid – 2 days onsite per week We’re looking for a strong hands-on C++ engineer who enjoys working close to real hardware and solving complex system-level problems. You’ll join the Barcelona R&D; team of a large, established general technology company, working on next-generation software for complex, high-performance hardware systems. The work sits across application software, hardware interfaces, drivers and high-speed data streaming, within a long-term and well-established R&D; programme. This is particularly suited to an engineer who enjoys getting beneath the application layer, understanding how the complete system behaves, debugging across different layers, and solving performance and integration problems. ? What You’ll Work On • Develop Modern C++ (primarily C++17) software for complex instrumentation systems • Build Windows applications that interface with devices, boards and specialised hardware • Work with high-speed PCIe and Ethernet data streaming • Debug across application code, drivers,



interfaces and hardware behaviour • Develop multithreaded, performance-sensitive software • Support system integration, validation and testing within an R&D;/lab environment • Work primarily in Windows, with some Linux development ✅ What We’re Looking For • Strong commercial, hands-on Modern C++ experience, ideally C++17+ • Strong experience developing software in Windows environments • Experience working close to hardware — instrumentation, devices, boards, embedded systems or similar • Good understanding of multithreading, concurrency and performance optimisation • Strong debugging and problem-solving skills across complex software/hardware systems • Experience with PCIe, Ethernet, drivers, networking or high-throughput data systems would be particularly relevant ? Contract & Long-Term Opportunity • Initial 6-month freelance/autónomo contract, with strong extension potential and clear long-term scope •

📌 Senior Software Engineer (Barcelona)
🏢 Script Dot
📍 Barcelona