Linux Systems Engineer

1 week ago

Bengaluru, India InstaSafe Technologies Private Limited Full time

Job Description About InstaSafe InstaSafe is a Zero Trust cybersecurity leader, helping global enterprises secure users, applications, and infrastructure across hybrid and cloud environments. Our Zero Trust Network Access (ZTNA), Identity & Access Management (IAM), and Multi-Factor Authentication (MFA) solutions protect over 500,000 endpoints worldwide. We are seeking a Linux Systems Engineer to build secure endpoint agents that extend Zero Trust policies to Linux-based systems . This includes the ISA Linux Agent and ZTA Linux Agent , which integrate with authentication protocols, PAM modules, and networking components to ensure secure, policy-driven access to enterprise applications. Role Overview The Linux Systems Engineer will design, develop, and maintain system-level Linux agents . The role requires proficiency in C/C++ , PAM module development , OpenSSL , and Linux networking internals . You will work on deep OS integrations (systemd, daemons, packaging), enabling Linux endpoints to act as fully trusted nodes in the Zero Trust ecosystem. Duties & Responsibilities Agent Development : Design and implement secure Linux endpoint agents for Zero Trust authentication and access control. Authentication Integration : Develop and extend Pluggable Authentication Modules (PAM) for MFA, SSO, and secure login enforcement. Networking & Security : Work with iptables/netfilter , TLS/SSL (OpenSSL) , and VPN/ZTNA protocols to secure data in transit. System-Level Work : Develop systemd services , daemons, and ensure proper Linux packaging ( .deb, .rpm ). API Integration : Connect agents with backend controllers/gateways using REST APIs and secure token exchanges (OAuth2, JWT). Debugging & Troubleshooting : Use Linux system debugging, logging, and packet inspection tools to resolve issues. Collaboration : Partner with cross-platform teams (Windows, Mac, Android, iOS) to ensure feature parity across endpoint clients. Continuous Learning : Keep updated on Linux kernel and security enhancements, applying them to strengthen endpoint security. Requirements Qualifications & Skills Education & Experience: Bachelor’s/Master’s in Computer Science, Engineering, or related field. 3–6 years of experience in Linux systems software development. Core Technical Skills: C Programming / C++ Shell Scripting (Bash) Linux Systemd PAM Modules OpenSSL Linux Networking (iptables/netfilter) Deb/RPM Packaging REST APIs Preferred/Good-to-Have: Experience with kernel modules or low-level drivers . Familiarity with container environments (Docker/Kubernetes). Knowledge of Zero Trust / VPN protocols (IPSec, OpenVPN, WireGuard). Familiarity with SELinux/AppArmor security frameworks. Benefits Career Value Proposition Build mission-critical Linux endpoint security agents used in Fortune 500 enterprises. Work on deep system-level programming that combines authentication, networking, and security. Collaborate with world-class engineers across OS platforms. Gain expertise in Zero Trust security and enterprise networking protocols .

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