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/Valuable-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
.

📌 Linux Systems Engineer (India)
🏢 InstaSafe
📍 India