Linux Systems Engineer

3 days ago

Bengaluru, Karnataka, India InstaSafe Full time ₹ 12,00,000 - ₹ 36,00,000 per year
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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