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Job Description:
Senior Linux Systems Engineer – Security & Identity

Role Overview
We are seeking a Senior Linux systems engineer with over 10 years of specialized experience in low-level C/C++ systems programming, cryptographic network security, and enterprise identity integration. In this role, you will architect, build, and secure core Linux infrastructure components. You will be responsible for designing high-throughput Linux daemons, authoring custom PAM modules, automating X.509 certificate lifecycles, and hardening enterprise software against complex, system-level vulnerabilities.
Key Responsibilities
Low-Level Systems Development: Architect and build high-performance, fault-tolerant Linux daemons using contemporary C/C++ and POSIX APIs.
Identity & Authentication Engineering: Design and implement custom Pluggable Authentication Modules (PAM)



and integrate systems seamlessly with enterprise identity providers (Active Directory, LDAP, Kerberos, SSSD).
Cryptography & PKI Management: Implement robust end-to-end transport and storage security using OpenSSL/WolfSSL APIs; manage and automate X.509 PKI certificate lifecycles, mTLS configurations, and cryptographic operations.
System Hardening & Security: Enforce system safety across Linux environments using granular security policies (Seccomp, SELinux/AppArmor) and secure coding standards (constant-time cryptographic execution, memory safety).
Network Analysis & Debugging: Diagnose, trace, and resolve complex network- and protocol-level bottlenecks or security flaws across TCP/IP stacks using advanced tools.
Required Qualifications & Technical Expertise
Experience
10+ years of hands-on experience in Linux systems programming, enterprise security engineering, or low-level software architecture.
Techn

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