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Senior Software Engineer (Kernel Programming)
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Reach the decision-maker — $5About the role
About Us Sophos is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Sophos meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Sophos X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response. Sophos offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM. Together with expert advisory services, these capabilities help organizations proactively reduce risk and respond faster, with the visibility and scalability needed to stay ahead of evolving threats. Sophos goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. Sophos is headquartered in Oxford, U.K. More information is available at www.sophos.com. Role Summary We are looking for a Senior Software Engineer with strong hands-on expertise in C, Linux, kernel fundamentals, and CI/CD automation, along with solid experience in building systems and toolchains, to join our Linux Platform Engineering team. This role spans hardware platform bring-up, OS library and toolchain upgrades, cryptography and compliance initiatives, and deep system-level debugging across the hardware–kernel–software stack. We value engineers who are open to adopting modern AI-assisted development workflows to enhance coding efficiency, debugging, automation, and documentation. Candidates who have partially or fully integrated AI tools into their day-to-day SDLC will have a distinct advantage. The Linux Platform Engineering team builds and maintains the core system foundation across hardware and software layers, with strong expertise in C, Linux kernel fundamentals, build systems, and CI/CD automation. The team drives platform bring‑up, OS library and toolchain upgrades, security and compliance initiatives, and complex system‑level troubleshooting, while actively using AI‑driven SDLC practices to improve development efficiency, debugging, automation, and documentation quality.
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