Information Security Engineer – Endpoint

Palantir Technologies

Information Security Engineer responsible for Windows and Active Directory security at Palantir. Focused on detection, investigation, and protecting global Windows infrastructure.

Posted 4/16/2026full-timeWashington, D.C. • Washington • 🇺🇸 United StatesMid-LevelSenior💰 $145,000 - $200,000 per yearWebsite

Tech Stack

Tools & technologies

PythonTypeScript

About the role

Key responsibilities & impact

Own the security posture of Palantir's Windows and Active Directory estate — hardening, configuration standards, and ongoing validation that those standards hold.
Reduce attack surface across AD: audit and remediate misconfigurations, legacy protocol exposure, excessive privilege, Kerberos delegation abuse, and tier model violations.
Evaluate, deploy, and own the configuration of defensive tooling across the Windows environment: EDR, PAM, identity threat detection, and endpoint hardening controls.
Build and maintain automation for security operations across Windows infrastructure — patching pipelines, configuration drift monitoring, access reviews, and credential hygiene.
Partner with Identity and Infrastructure teams to drive architectural improvements: tiered administration, Protected Users, LAPS, Credential Guard, and authentication policy silos.
Translate findings from assessments and red team exercises into durable fixes — configuration changes, architectural improvements, and policy updates that reduce recurrence.

Requirements

What you’ll need

5+ years of hands-on security experience, with the majority focused on Windows environments and Active Directory.
Proficiency in Python or PowerShell for detection development, automation, and forensic tooling.
Active TS/SCI security clearance, or eligibility and willingness to obtain one.
A portfolio of real work: detections you've written, research you've published, tools you've built, or incidents you've led.

Benefits

Comp & perks

Employees (and their eligible dependents) can enroll in medical, dental, and vision insurance as well as voluntary life insurance
Employees are automatically covered by Palantir’s basic life, AD&D and disability insurance
Commuter benefits
Take what you need paid time off, not accrual based
2 weeks paid time off built into the end of each year (subject to team and business needs)
10 paid holidays throughout the calendar year
Supportive leave of absence program including time off for military service and medical events
Paid leave for new parents and subsidized back-up care for all parents
Fertility and family building benefits including but not limited to adoption, surrogacy, and preservation
Stipend to help with expenses that come with a new child
Employees can enroll in Palantir’s 401k plan

ATS Keywords

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Hard Skills & Tools

Windows securityActive DirectoryEDRPAMidentity threat detectionendpoint hardeningPythonPowerShellautomationforensic tooling

Soft Skills

collaborationproblem-solvingcommunicationanalytical thinkingattention to detail

Certifications

Active TS/SCI security clearance