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Senior Linux Engineer, Privileged Access

Keeper Security · Remote, Estados Unidos Da América · Remote

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Description

Keeper Security is hiring a Senior Linux Systems Engineer to join our Privileged Access Management team and help build secure endpoint privilege management capabilities for Linux environments. This is a 100% remote position, with an opportunity to work a hybrid schedule for candidates based in the Chicago, IL or El Dorado Hills, CA metro areas.

Keeper’s cybersecurity software is trusted by millions of people and thousands of organizations globally. Keeper is published in 23 languages and sold in over 150 countries. Join one of the fastest-growing cybersecurity companies and help build low-level Linux security capabilities that enforce least privilege, secure process execution and privileged access across enterprise endpoints.

About Keeper

Keeper Security is one of the fastest-growing cybersecurity software companies that protects thousands of organizations and millions of people in over 150 countries. Keeper is a pioneer of zero-knowledge and zero-trust security built for any IT environment. Its core offering, KeeperPAM®, is an AI-enabled, cloud-native platform that protects all users, devices and infrastructure from cyber attacks. Recognized for its innovation in the Gartner Magic Quadrant for Privileged Access Management (PAM), Keeper secures passwords and passkeys, infrastructure secrets, remote connections and endpoints with role-based enforcement policies, least privilege and just-in-time access. Learn why Keeper is trusted by leading organizations to defend against modern adversaries at KeeperSecurity.com.

About the Job

As a Senior Linux Systems Engineer on Keeper’s PAM team, you will design and build security-sensitive components that control privileged execution and elevation on Linux endpoints. This is a systems engineering role focused on endpoint privilege management, process authorization, Linux security boundaries and long-running privileged services. You will work across a Rust-based Linux agent, native C PAM modules and .NET services running on Linux. The role requires strong knowledge of Linux internals and the ability to reason carefully about process identity, permissions, authentication, kernel-facing APIs and secure failure behavior. This is not a traditional application development role; the work operates close to the Linux operating system and directly influences how privileged processes are authorized and executed.

Responsibilities

  • Design, develop and maintain Linux endpoint privilege management capabilities across Rust, C and .NET components
  • Build and enhance kernel-facing agent functionality using Linux interfaces such as 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 time-of-check/time-of-use (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

  • 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

Preferred Qualifications

  • Experience with MQTT or other event-driven messaging technologies used for agent, plugin or job execution
  • Experience with Linux desktop session technologies, including X11, Wayland, GDM and D-Bus
  • Familiarity with TLS, PKI, code signing and certificate-based process or plugin authentication
  • Experience supporting multiple Linux distributions, particularly RHEL and Ubuntu, including differences between SELinux and AppArmor
  • Experience with endpoint privilege management, privileged access management or endpoint security products
  • Familiarity with Avalonia or another cross-platform Linux desktop UI framework
  • Experience building Linux software for x86 and ARM architectures, including packaging and signing pipelines
  • Familiarity with endpoint security architectures on Windows or macOS
  • Strong understanding of authorization models such as allow, deny, approval and just-in-time elevation workflows

Benefits

  • 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

Keeper Security, Inc. is an equal opportunity employer and participant in the U.S. Federal E-Verify program. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Classification: Exempt

 

Keeper Candidate Privacy Notice

This notice explains how Keeper Security processes your personal data during recruitment. Depending on the role and location, the Controller of personal data (the organization responsible for determining why and how personal data is processed) will be Keeper Security Inc. (US), Keeper Security EMEA Ltd. (Ireland), or Keeper Security APAC K.K (Japan).

1. Data We Collect

Information You provide:

  • Contact details, CV/resume, cover letter
  • Employment history, qualifications, work eligibility
  • Application responses and uploaded documents

Information We generate:

  • Interview notes, assessments, communications
  • Scheduling information

Information From Others:

  • Recruiter/referral information who submit your profile
  • References (with your consent, before final offer)
  • Public professional profiles
  • Background verification (post offer)

Voluntary Diversity and Equal Opportunity Information

  • We may ask you to voluntarily provide diversity information including race/ethnicity, gender, disability status and veteran status (US). Providing this information is optional and Keeper collects this data in order to comply with EEOC and similar requirements

2. How We Use Your Data

  • Assess your application and suitability
  • Manage interviews and recruitment workflow
  • Consider you for other/future roles (we may seek your consent to keep your information on our systems beyond the retention period specified)
  • Comply with employment law obligations

3. Legal Basis

  • Legitimate Interests (recruitment management, security and integrity of the hiring process)
  • Contracting steps (for progressed candidates)
  • Legal and regulatory compliance obligations; explicit consent where required

4. Who We Share Information With

Internal:

  • HR, hiring managers, interviewers*, IT support for system administration

*Note - diversity and equal opportunity data is not shared with hiring managers.

Third Parties:

Service providers who assist with:

  • Applicant tracking, recruitment systems and assessment providers
  • Background verification vendors (post offer)
  • Recruitment agencies (where applicable)
  • Tools to support communication, collaboration and to securely store your data

Keeper ensures that all our third parties are contractually bound to protect your personal data with adequate safeguards in place.

5. International Transfers

Your data may be accessed by Keeper entities globally as needed for the purposes of hiring and decision making. We protect any such data transfer between Keeper entities using appropriate safeguards under applicable data protection laws.

6. Security

We implement appropriate technical and organizational measures to protect your data, consistent with our industry leading security standards.

7. Retention

We keep your data for 24 months from your last application activity, then delete or anonymize it.

Exceptions:

  • You opt into our talent database for further retention by providing consent (extended retention)
  • You're hired (transfers to employee records)

8. Your Rights

You have the following rights and can contact us at the email below to exercise them:

  • Access, correct, or delete your data, subject to applicable law and retention requirements
  • Object to or restrict processing
  • Withdraw consent (where applicable)
  • Request data portability
  • Lodge a complaint with your data protection authority

If you become an employee, your rights regarding your employee record are governed by our internal Employee Privacy Notice and certain data will be retained as required under relevant laws such as employment or tax law. 

When you request access to your personal data, some information may be redacted if it includes the personal data of other individuals or information that we must protect in order to preserve their privacy rights.

9. Automated Decisions

Keeper does not make hiring decisions using solely automated processing.

10. Contact - Candidates can send privacy questions to: [email protected]