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# Information Technology Security Administrator - Onsite

- **Company:** Liberty Personnel Services, Inc.
- **Location:** Newtown Square, PA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Bash Shell, CompTIA Security+, Cyber Security, Data Security, Disaster Recovery, Multi-Factor Authentication, Python (Programming Language), Windows PowerShell, Azure Active Directory, CrowdStrike Falcon Management, Anti-Phishing, Security Information and Event Management, Software Vulnerability Management, Scripting, Firewalls (Computer Science), Information Technology, Veeam, Cisco, Vulnerability Analysis
- **Published:** October 13, 2026
- **Apply:** http://www.libertyjobs.com/findjobs-details.php?j_id=90063

## About the Role

* 3+ years of information security or IT infrastructure experience
 * Hands-on experience with incident response and vulnerability management
 * Experience with SIEM/EDR, identity and MFA, email security, and vulnerability management tools
 * Scripting or automation experience
 * Associate degree in IT, Computer Science, or a related field, or equivalent experience
 * Ability to obtain a relevant cybersecurity certification within 12 months

Preferred Experience

 * CrowdStrike Falcon, Microsoft Entra ID, Cisco Duo, Varonis, or Veeam
 * CompTIA Security+, CySA+, CISSP, CISM, or other relevant certifications
 * Public-sector information security experience
 * Experience working with external security providers, auditors, and incident response partners, * Must be able to obtain required background clearances
 * Must be available for scheduled after-hours maintenance and participation in an on-call rotation

Motivated IT security professionals with hands-on security operations experience are encouraged to apply!

## Description

* Monitor security alerts, investigate threats, and coordinate incident response
 * Manage vulnerability assessments, remediation, and risk-based prioritization
 * Develop and maintain SIEM detection rules, dashboards, and security integrations
 * Administer EDR, identity and MFA, email security, firewalls, and data security tools
 * Develop scripts and automation using PowerShell, Python, or Bash
 * Support security audits, third-party risk assessments, and compliance initiatives
 * Manage security awareness training and phishing simulations
 * Collaborate with IT teams on system hardening, patching, backup validation, and disaster recovery