Linux Security Researcher

About the Role :

We are seeking a highly skilled Linux Kernel Security Engineer to join our cybersecurity defense research team. The ideal candidate will have deep expertise in Linux internals, strong C/C++ programming skills, and hands-on experience in analyzing vulnerabilities, developing system-level security tools, and contributing to the hardening of Linux-based infrastructure.

This is a unique opportunity to be part of a forward-looking security team focused on proactive threat mitigation, vulnerability research, and system integrity enhancement.

Responsibilities :

System Security Research & Development :

- Analyze historical and emerging Linux vulnerabilities (CVE research and impact assessment).

- Design and implement kernel-level monitoring and protection tools.

- Develop secure and efficient Linux Kernel Modules (LKMs) for detection and defense purposes.

- Research modern techniques for system integrity, syscall behavior analysis, and runtime protection.

Security Engineering & Tooling :

- Build low-level system utilities using C/C++ for security visibility and resilience.

- Enhance Linux infrastructure with custom security modules, syscall instrumentation, and auditing tools.

- Collaborate with infrastructure and DevSecOps teams to ensure secure system-level deployments.

Risk Analysis & Hardening :

- Evaluate system behavior under potential attack scenarios in a controlled and defensive context.

- Recommend mitigations for vulnerabilities in kernel space and userland boundaries.

- Support the implementation of hardening configurations and kernel security features such as SELinux, AppArmor, and seccomp.

Documentation & Reporting :

- Document technical findings, tools, and system modifications clearly and professionally.

- Create detailed reports for internal teams and contribute to secure development guidelines.

Eligibility :

Education :

- Bachelors degree in Computer Science, Cybersecurity, Information Security, or a related field.

- Postgraduate degree or relevant research experience is an added advantage.

Technical Skills :

- Strong understanding of Linux Kernel architecture, including :

1. System call interface

2. Process and memory management

3. Filesystems and device drivers

- Strong proficiency in C and C++ for both kernel-space and user-space development.

- Experience with :

1. Socket programming and Linux networking stack

2. Kernel debugging tools such as gdb, ftrace, kprobes, and perf

3. Building and maintaining Loadable Kernel Modules (LKMs)

Security Experience :

- Familiarity with Linux vulnerability analysis, CVE assessment, and secure coding practices.

- Understanding of kernel hardening techniques, mitigations, and runtime protections.

- Knowledge of threat modeling and defensive strategies at the operating system level.

Desired Eligibility :

Certifications (Preferred) :

- OSCP, OSEP, or equivalent advanced security certifications.

- LFD420 (Linux Kernel Internals - Linux Foundation).

- Additional Linux or security-focused certifications are a plus.

Desirable Skills :

- Experience with secure Linux deployment models.

- Knowledge of Mandatory Access Control (MAC) systems such as SELinux and AppArmor.

- Experience with container runtime security, including seccomp-bpf and namespaces.

- Contributions to open-source security tools or Linux kernel projects.

- Background in participating in security research communities or CTF platforms is preferred.

Travel :

- Travel may be required across the country for project execution, monitoring, and coordination with geographically distributed teams, as and when required.

Communication :

- Submit a cover letter summarising your experience in relevant technologies and software, along with your resume and latest passport-size photograph.

Skills

Linux, Cyber Security, R&D - Security, Security, C++, C, Vulnerability Management, DevSecOps, Socket Programming, Security Research, Linux Kernel