Linux Systems Engineer

InstaSafe Technologies Private Limited; India; On-site; INR 800,000 - 1,500,000; Full time

Job summary

InstaSafe Technologies Private Limited is looking for a Linux Systems Engineer based in Bangalore North, India. The role involves designing, developing, and maintaining system-level Linux agents for secure endpoint access within a Zero Trust framework. Candidates should possess a Bachelor's or Master's degree, with 3–6 years of Linux software development experience and proficiency in C/C++. Responsibilities include developing authentication modules, ensuring secure networking, and collaborating with cross-platform teams. This role provides a unique opportunity to work in a cutting-edge cybersecurity environment.

Qualifications

• 3–6 years of experience in Linux systems software development.
• Experience with kernel modules or low-level drivers.
• Familiarity with security frameworks.

Responsibilities

• Design and implement secure Linux endpoint agents for Zero Trust.
• Develop Pluggable Authentication Modules (PAM) for MFA and SSO.
• Work with iptables/netfilter, TLS/SSL, and VPN protocols.
• Develop systemd services and ensure proper Linux packaging.
• Connect agents with backend controllers using REST APIs.
• Use debugging tools to troubleshoot issues.
• Collaborate with cross-platform teams.

Skills

C/C++

PAM module development

OpenSSL

Linux networking internals

Container environments (Docker/Kubernetes)

Zero Trust / VPN protocols (IPSec, OpenVPN, WireGuard)

SELinux/AppArmor

Education

Bachelor's/Master's in Computer Science, Engineering, or related field

Job description

Full time | InstaSafe Technologies Private Limited | India

Posted On 11/19/2025

Job Information

Technology

City Bangalore North

State/Province Karnataka

560038

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.

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.

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 .