Senior Linux Systems & Network Engineer

1 / 2Job Description: Senior Linux Systems & Network EngineerJob Summary:We are looking for a highly skilled Linux Systems & Network Engineer with expertise in core Linux internals, kernel-level programming, and deep networking integration with Linux. The ideal candidate should be proficient in system programming, shell scripting, and PHP, with the ability to optimize, secure, and integrate Linux-based environments seamlessly.Key Responsibilities:· Linux Kernel & System Developmento Customize and optimize the Linux kernel for performance and security.o Debug and troubleshoot kernel modules, drivers, and system-level issues.o Work on low-level system calls, memory management, and process scheduling.· Networking & Integrationo Configure, manage, and troubleshoot core networking protocols (TCP/IP, UDP, ICMP, etc.).o Implement firewall rules, VPNs, and network security policies in Linux environments.o Develop network-related applications and optimize performance using Linux networking stack.· Programming & Automationo Write and maintain efficient Shell scripts and automation tools for system management.o Develop and maintain web-based applications using PHP for system administration and reporting.o Debug and optimize code for system-level and network applications.· Security & System Hardeningo Implement SELinux/AppArmor, IPtables/NFTables, and other security controls.o Identify and mitigate system vulnerabilities at the kernel and network level.· Integration & Customizationo Develop custom Linux distributions or modify existing distributions for specific use cases.2 / 2o Integrate third-party hardware/software with Linux-based systems.o Optimize Linux for embedded and server environments.Required Skills & Qualifications:· Strong knowledge of Linux internals, kernel development, and system programming.· Expertise in networking protocols, firewall configurations, and security policies.· Advanced skills in Shell scripting, PHP, and system-level programming (C, Python preferred).· Experience with iptables, nftables, OpenVPN, WireGuard, DNS, DHCP, and routing protocols.· Hands-on experience with Linux performance tuning, debugging tools (strace, gdb, perf).· Knowledge of virtualization, containers (Docker, LXC), and orchestration tools.Preferred Skillset:· Contributions to open-source Linux projects or kernel modules.· Experience with DevOps, CI/CD, and cloud-based Linux environments.· Knowledge of embedded Linux or real-time Linux (RTLinux, PREEMPT-RT).