Information Technology Security Administrator - Onsite

Liberty Personnel Services, Inc.; Newtown Square (Delaware County); On-site; USD 85,000 - 110,000; Full time

Benefits offered by this job

Competitive compensation

Excellent retirement plan

Generous PTO

Tuition reimbursement

Job summary

Liberty Personnel Services, Inc. is hiring an Information Technology Security Administrator to join an onsite team in Newtown Square, PA. You will lead hands-on security work across incident response, vulnerability management, SIEM operations, and risk mitigation while collaborating with IT colleagues.

The role emphasizes scripting, automation, and ongoing security improvements. A proactive professional will help manage audits, training, and implementation of security controls with a strong

Qualifications

• 3+ years information security or IT infrastructure experience.
• Hands-on incident response and vulnerability management experience.
• 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.

Responsibilities

• 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.

Skills

Incident response

Vulnerability management

SIEM/EDR

Scripting

Identity security

Security monitoring

Education

Associate degree in IT/CS

Equivalent experience

Tools

CrowdStrike Falcon

Microsoft Entra ID

Cisco Duo

Varonis

Veeam

Job description

Information Technology Security Administrator - Onsite

Information Technology Security Admin - Onsite

• ONSITE - Only local candidates will be considered.
• MUST be a US Citizen or Green Card Holder.

Newtown Square, PA | Full-Time, Direct Hire

Join a collaborative IT team as an Information Technology Security Administrator, where you'll play a hands‑on role protecting enterprise systems, sensitive data, and critical infrastructure. This opportunity offers a broad cybersecurity focus spanning incident response, vulnerability management, SIEM detection engineering, security platform administration, and risk mitigation.

Enjoy a strong benefits package, excellent work-life balance, professional development support, and the opportunity to make a meaningful impact.

What You'll Be Doing

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

Required Experience

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

Why Consider This Opportunity?

Competitive compensation and comprehensive benefits

Strong retirement plan with a 10% employer match

Generous PTO, holidays, and winter break

Summer compressed four‑day workweek

Tuition waiver and reimbursement

Professional development and certification support

Supportive work environment with a strong work‑life balance

Requirements

Must be able to obtain required background clearances

Must be available for scheduled after‑hours maintenance and participation in an on‑call rotation

An Equal Opportunity Employer committed to diversity in the workplace. We celebrate the unique contributions that each team member brings to our organization.