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Security Administrator

Job Title: Security Administrator
Company: Lonestar Electric Supply – Corporate
Location: Houston, TX
Job Type: Full-time
EEO Class: Professionals

VETERANS ARE ENCOURAGED TO APPLY

Lonestar Electric Supply Corporate is seeking a Security Administrator to support and protect the company’s multi-location technical infrastructure. This role is responsible for designing, implementing, monitoring, and maintaining secure systems across cloud and on-prem environments serving 500+ users. The Security Administrator will play a critical role in safeguarding network resources, strengthening cybersecurity posture, and ensuring operational resilience across the organization.

This is an on-site position based in Houston, TX, within a rapidly growing and multi-state organization.

Responsibilities:

Design, implement, and maintain security systems to protect network infrastructure, servers, endpoints, and cloud environments.
Administer and monitor Azure cloud services, Active Directory (on-prem and Azure AD), and hybrid identity solutions including AD Connect.
Configure and manage security controls within Meraki networking environments, firewalls, and endpoint protection platforms.
Monitor and remediate vulnerabilities in accordance with company patch management and security policies.
Develop and maintain security, backup, and disaster recovery strategies.
Perform ongoing risk assessments and implement mitigation strategies to reduce exposure.
Provide technical oversight for security-related infrastructure decisions and projects.
Serve as a technical escalation point for complex infrastructure and security issues.
Assist in maintaining documentation for security policies, procedures, and system configurations.
Support compliance efforts and maintain audit readiness where applicable.
Participate in scheduled on-call rotation and provide after-hours support as needed.
Collaborate with IT team members to strengthen overall infrastructure reliability and security posture.
Perform other duties as assigned by leadership.

Requirements:

Bachelor’s degree in Information Technology, Cybersecurity, or related field preferred; equivalent experience considered.
5–10 years of experience in network security, systems administration, or infrastructure security roles.
Proven experience managing Azure infrastructure and cloud security best practices.
Strong knowledge of Windows Server environments and Active Directory in multi-domain environments.
Experience configuring and managing firewalls, endpoint protection, and network security controls.
Patch management and vulnerability remediation experience required.
Working knowledge of Linux and macOS operating systems preferred.
Experience with scripting (PowerShell) and automation preferred.
Familiarity with ConnectWise or similar IT service management tools a plus.
Industry certifications such as Network+, Security+, SSCP, CEH, or similar preferred.
Strong analytical, troubleshooting, and documentation skills.
Ability to prioritize and manage multiple initiatives in a fast-paced environment.
Excellent written and verbal communication skills.

Travel & Schedule:

Monday through Friday schedule.
Participation in on-call rotation required.
Occasional overnight domestic travel (up to 25%) may be required.

Physical Requirements:

Prolonged periods sitting at a desk and working on a computer.
Must be able to lift up to 15 pounds at times.

Benefits:

Medical, dental, life and vision insurance
401(k) Retirement Plan and Match
Paid Time Off
Specified Holiday Pay

Disclaimer:
This job description is a general outline of the day-to-day duties to be expected and may not cover all job responsibilities that may be assigned by management.

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