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.
Key Skills for This Role
csharpdotnetgitlinuxrust
Full Job Posting
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
Apply for this job in 1 click
Skip the repetitive application forms
Install the Base Career Chrome Extension and autofill job applications across major job boards with your profile.
Trusted by over 500,000 job seekers on Base Career
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).
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
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
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
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.
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.
Security
We implement appropriate technical and organizational measures to protect your data, consistent with our industry leading security standards.
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)
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.
Automated Decisions
Keeper does not make hiring decisions using solely automated processing.
Contact - Candidates can send privacy questions to: privacy@keepersecurity.com
About Keeper Security
Cybersecurity
Password management and privileged access management platform protecting individuals and businesses from credential-based cyberattacks.
