Staff Software Engineer

3 weeks ago


Nanjing, China Calix Full time
This position is based in Nanjing, China.

The Linux Security domain professional will be responsible for ensuring the security of Linux systems and services, protecting against unauthorized access, and maintaining the integrity of data and images.

Key Responsibilities:

  • Maintain permissions and harden the Linux kernel to protect against vulnerabilities and exploits.

  • Implement security isolation techniques to prevent unauthorized access.

  • Conduct regular security audits to identify and remediate potential vulnerabilities.

  • Monitor system logs and behavior to detect and respond to security incidents.

  • Work with 3rd party TPM to maintain Calix products’ secure execution environment.

  • Be responsible for Linux security features such as AppArmor, SELinux, DM, cgroup, namespace, and audit.

  • Implement and maintain Secboot and Trustzone functionalities based on several platform.

Qualifications:

  • BSCS (or equivalent) required, MSCS preferred.

  • 8+ years of highly technical software engineering experience, in which minimum of 3 years' experience working with Linux security in a production environment.

  • Strong understanding of Linux system administration and security principles/best practices, and knowledge of Linux security modules, including user and group permissions, file system security.

  • Familiarity with Linux security features like AppArmor, SELinux, DM, cgroups, namespaces, and audit.

  • Familiarity with security isolation techniques and auditing tools.

  • Familiarity with OpenSSL, TLS, CA certification, and RootCA maintenance.

  • Experience with Secboot and Trustzone is a plus.

  • Excellent problem-solving and analytical skills.

  • Strong communication and collaboration skills.

  • Good English written and verbal skills.

  • Ability to work independently and as part of a team.



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