Linux Systems Engineer
About InstaSafe<\/span>
<\/h3>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.<\/span>
<\/p>We are seeking a <\/span>Linux Systems Engineer<\/span> to build secure endpoint agents that extend Zero Trust policies to <\/span>Linux\-based systems<\/span>. This includes the <\/span>ISA Linux Agent<\/span> and <\/span>ZTA Linux Agent<\/span>, which integrate with authentication protocols, PAM modules, and networking components to ensure <\/span>secure, policy\-driven access<\/span> to enterprise applications.<\/span>
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<\/div>Role Overview<\/span>
<\/h3>The <\/span>Linux Systems Engineer<\/span> will design, develop, and maintain <\/span>system\-level Linux agents<\/span>. The role requires proficiency in <\/span>C/C++<\/span>, <\/span>PAM module development<\/span>, <\/span>OpenSSL<\/span>, and <\/span>Linux networking internals<\/span>.<\/span>
<\/p>You will work on <\/span>deep OS integrations<\/span> (systemd, daemons, packaging), enabling Linux endpoints to act as fully trusted nodes in the Zero Trust ecosystem.<\/span>
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<\/div>Duties & Responsibilities<\/span>
<\/h3>Agent Development<\/span>: Design and implement secure Linux endpoint agents for Zero Trust authentication and access control.<\/span>
<\/span><\/p><\/li>Authentication Integration<\/span>: Develop and extend <\/span>Pluggable Authentication Modules (PAM)<\/span> for MFA, SSO, and secure login enforcement.<\/span>
<\/span><\/p><\/li>Networking & Security<\/span>: Work with <\/span>iptables/netfilter<\/span>, <\/span>TLS/SSL (OpenSSL)<\/span>, and VPN/ZTNA protocols to secure data in transit.<\/span>
<\/span><\/p><\/li>System\-Level Work<\/span>: Develop <\/span>systemd services<\/span>, daemons, and ensure proper Linux packaging (<\/span>.deb, .rpm<\/span>).<\/span>
<\/span><\/p><\/li>API Integration<\/span>: Connect agents with backend controllers/gateways using <\/span>REST APIs<\/span> and secure token exchanges (OAuth2, JWT).<\/span>
<\/span><\/p><\/li>Debugging & Troubleshooting<\/span>: Use Linux system debugging, logging, and packet inspection tools to resolve issues.<\/span>
<\/span><\/p><\/li>Collaboration<\/span>: Partner with cross\-platform teams (Windows, Mac, Android, iOS) to ensure feature parity across endpoint clients.<\/span>
<\/span><\/p><\/li><\/ul>Continuous Learning<\/span>: Keep updated on Linux kernel and security enhancements, applying them to strengthen endpoint security.<\/span>
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Requirements<\/h3>Qualifications & Skills<\/span>
<\/h3>Education & Experience:<\/span>
<\/p>Bachelor\u2019s/Master\u2019s in Computer Science, Engineering, or related field.<\/span>
<\/span><\/p><\/li>3\u20136 years of experience<\/span> in Linux systems software development.<\/span>
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Core Technical Skills:<\/span>
<\/div>C Programming<\/span><\/a> /<\/span> <\/span>C++<\/span>
<\/span><\/a><\/p><\/li>Shell Scripting (Bash)<\/span>
<\/span><\/a><\/p><\/li>Linux Systemd<\/span>
<\/span><\/a><\/p><\/li>PAM Modules<\/span>
<\/span><\/a><\/p><\/li>OpenSSL<\/span>
<\/span><\/a><\/p><\/li>Linux Networking (iptables/netfilter)<\/span>
<\/span><\/a><\/p><\/li>Deb/RPM Packaging<\/span>
<\/span><\/a><\/p><\/li>REST APIs<\/span>
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Preferred/Good\-to\-Have:<\/span>
<\/div>Experience with <\/span>kernel modules or low\-level drivers<\/span>.<\/span>
<\/span><\/p><\/li>Familiarity with <\/span>container environments<\/span> (Docker/Kubernetes).<\/span>
<\/span><\/p><\/li>Knowledge of <\/span>Zero Trust / VPN protocols<\/span> (IPSec, OpenVPN, WireGuard).<\/span>
<\/span><\/p><\/li><\/ul>Familiarity with <\/span>SELinux/AppArmor<\/span> security frameworks.<\/span>
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Benefits<\/h3>Career Value Proposition<\/span>
<\/h3>Build <\/span>mission\-critical Linux endpoint security agents<\/span> used in Fortune 500 enterprises.<\/span>
<\/span><\/p><\/li>Work on <\/span>deep system\-level programming<\/span> that combines authentication, networking, and security.<\/span>
<\/span><\/p><\/li>Collaborate with world\-class engineers across OS platforms.<\/span>
<\/p><\/li>Gain expertise in <\/span>Zero Trust security<\/span> and <\/span>enterprise networking protocols<\/span>.<\/span>
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<\/p>
We are seeking a <\/span>Linux Systems Engineer<\/span> to build secure endpoint agents that extend Zero Trust policies to <\/span>Linux\-based systems<\/span>. This includes the <\/span>ISA Linux Agent<\/span> and <\/span>ZTA Linux Agent<\/span>, which integrate with authentication protocols, PAM modules, and networking components to ensure <\/span>secure, policy\-driven access<\/span> to enterprise applications.<\/span> The <\/span>Linux Systems Engineer<\/span> will design, develop, and maintain <\/span>system\-level Linux agents<\/span>. The role requires proficiency in <\/span>C/C++<\/span>, <\/span>PAM module development<\/span>, <\/span>OpenSSL<\/span>, and <\/span>Linux networking internals<\/span>.<\/span> You will work on <\/span>deep OS integrations<\/span> (systemd, daemons, packaging), enabling Linux endpoints to act as fully trusted nodes in the Zero Trust ecosystem.<\/span> Agent Development<\/span>: Design and implement secure Linux endpoint agents for Zero Trust authentication and access control.<\/span> Authentication Integration<\/span>: Develop and extend <\/span>Pluggable Authentication Modules (PAM)<\/span> for MFA, SSO, and secure login enforcement.<\/span> Networking & Security<\/span>: Work with <\/span>iptables/netfilter<\/span>, <\/span>TLS/SSL (OpenSSL)<\/span>, and VPN/ZTNA protocols to secure data in transit.<\/span> System\-Level Work<\/span>: Develop <\/span>systemd services<\/span>, daemons, and ensure proper Linux packaging (<\/span>.deb, .rpm<\/span>).<\/span> API Integration<\/span>: Connect agents with backend controllers/gateways using <\/span>REST APIs<\/span> and secure token exchanges (OAuth2, JWT).<\/span> Debugging & Troubleshooting<\/span>: Use Linux system debugging, logging, and packet inspection tools to resolve issues.<\/span> Collaboration<\/span>: Partner with cross\-platform teams (Windows, Mac, Android, iOS) to ensure feature parity across endpoint clients.<\/span> Education & Experience:<\/span> Bachelor\u2019s/Master\u2019s in Computer Science, Engineering, or related field.<\/span> 3\u20136 years of experience<\/span> in Linux systems software development.<\/span> C Programming<\/span><\/a> /<\/span> <\/span>C++<\/span> Shell Scripting (Bash)<\/span> Linux Systemd<\/span> PAM Modules<\/span> OpenSSL<\/span> Linux Networking (iptables/netfilter)<\/span> Deb/RPM Packaging<\/span> REST APIs<\/span> Experience with <\/span>kernel modules or low\-level drivers<\/span>.<\/span> Familiarity with <\/span>container environments<\/span> (Docker/Kubernetes).<\/span> Knowledge of <\/span>Zero Trust / VPN protocols<\/span> (IPSec, OpenVPN, WireGuard).<\/span> Build <\/span>mission\-critical Linux endpoint security agents<\/span> used in Fortune 500 enterprises.<\/span> Work on <\/span>deep system\-level programming<\/span> that combines authentication, networking, and security.<\/span> Collaborate with world\-class engineers across OS platforms.<\/span> Gain expertise in <\/span>Zero Trust security<\/span> and <\/span>enterprise networking protocols<\/span>.<\/span>
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<\/div>Role Overview<\/span>
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<\/div>Duties & Responsibilities<\/span>
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<\/div><\/span>Requirements<\/h3>
Qualifications & Skills<\/span>
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<\/div><\/span>Benefits<\/h3>
Career Value Proposition<\/span>
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