? 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
- 40 hours per week
- Hybrid working – typically 2 days per week onsite in Barcelona
- Long-term, ongoing R&D; programme rather than a short-term project

? Interested?

If you’re an experienced C++ engineer who enjoys understanding how software and hardware work together, and getting stuck into difficult debugging and performance problems, I’d be happy to tell you more

📌 Senior Software Engineer (Cataluña)
🏢 Script u0026 Dot
📍 Cataluña