Senior Linux Engineer – Privileged Access

Keeper Security, Inc.

Senior Linux Engineer building privileged-access controls for Keeper’s cybersecurity platform. Developing Rust, C and .NET components for secure Linux endpoint execution and privilege management.

Posted 8/18/2026full-timeRemote • California, Illinois • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in Linux systems programming, including proficiency in C and Rust, with a focus on security-sensitive software development and privilege management. Capable of designing and maintaining complex Linux services and orchestration capabilities while effectively utilizing AI-assisted development tools.

Highest-signal resume keywords

Linux Systems ProgrammingC ProgrammingRust DevelopmentLinux PAM IntegrationAsynchronous Programming

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Privilege ManagementKernel-Facing Agent DevelopmentPAM Module DevelopmentSystemd ServicesMemory ManagementProcess TrustAuthentication and AuthorizationGCC and Make-Based Build WorkflowsSession ManagementSecurity-Sensitive Software Development

Tools & Technologies

TokioMQTTTLSAI-Assisted Development ToolsGitHub Copilot

Certifications & Qualifications

Bachelor’s Degree in Computer ScienceBachelor’s Degree in Engineering

Industry Keywords

SELinuxAppArmorRPM PackagingDEB PackagingProcess IdentityAccess ControlsLeast PrivilegeAuthorization Race ConditionsOperational DiagnosticsCross-Platform Functionality

Tech Stack

Tools & technologies

Linux.NETRust

About the role

Key responsibilities & impact

Design, develop and maintain Linux endpoint privilege management capabilities across Rust, C and .NET components
Build and enhance kernel-facing agent functionality using fanotify, the proc filesystem, namespaces, capabilities and process identity
Develop and maintain native PAM modules and Linux privilege-elevation workflows
Build long-running privileged Linux services using Rust, Tokio, MQTT, TLS and asynchronous programming patterns
Develop Linux-specific orchestration and session-management capabilities in .NET 8, including process authentication, access controls, ephemeral accounts and session monitoring
Diagnose complex Linux execution and security issues involving blocked processes, authentication races, permissions, SELinux, AppArmor and system service behavior
Design secure privilege-enforcement mechanisms based on least privilege, process trust and protection against TOCTOU and authorization race conditions
Build and maintain systemd services, RPM and DEB packages, installation workflows, service hardening and operational diagnostics
Collaborate with PAM, endpoint, QA and platform engineers on architecture, testing, cross-platform functionality and production troubleshooting
Use AI-assisted development tools such as Claude, ChatGPT, GitHub Copilot or similar platforms to improve systems research, debugging, code development, testing and technical documentation

Requirements

What you’ll need

7+ years of professional software or systems engineering experience, with significant hands-on Linux systems programming experience
Deep understanding of Linux process and security concepts, including the proc filesystem, user and group IDs, Linux capabilities, namespaces and process execution
Strong C programming experience, including native Linux development, memory management, GCC and Make-based build workflows and defensive error handling
Experience developing or integrating with Linux PAM and PAM configuration
Strong Rust experience, including ownership, concurrency, asynchronous development and long-running service or daemon design
Experience with Tokio or similar asynchronous Rust frameworks
Working proficiency with C# and .NET in Linux environments
Experience developing security-sensitive software involving authentication, authorization, privilege elevation, process trust or least-privilege controls
Strong understanding of Linux service management and operations, including systemd, journalctl, SELinux and/or AppArmor, and RPM/DEB packaging
Experience troubleshooting low-level Linux behavior using system logs, process inspection, tracing and reproducible test tools
Ability to read Linux kernel and subsystem documentation and translate system behavior into secure production implementations
Ability and willingness to use AI-assisted tools effectively to support systems programming, debugging, technical analysis, testing and documentation
Bachelor’s degree in Computer Science, Engineering or a related field, or equivalent practical experience

Benefits

Comp & perks

Medical, Dental & Vision (inclusive of domestic partnerships)
Employer Paid Life Insurance & Employee/Spouse/Child Supplemental Life
Voluntary Short/Long Term Disability Insurance
401K (Roth/Traditional)
A generous PTO plan that celebrates your commitment and seniority (including paid Bereavement/Jury Duty, etc.)
Above-market annual bonuses