IT SECURITY / SYSTEM ADMINISTRATOR

PSN Services LLC•Plano, TX

About The Position

The IT Security / System Administrator is responsible for maintaining, securing, and optimizing the organization’s IT infrastructure. This role ensures stability, integrity, and confidentiality of systems, networks, and data while supporting day-to-day IT operations. The position combines hands-on systems administration with proactive cybersecurity oversight to reduce risk and maintain regulatory compliance.

Requirements

Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, or related field (or equivalent experience).
3–5+ years of experience in system administration and IT security.
Strong knowledge of networking fundamentals (TCP/IP, VLANs, routing, switching).
Experience with firewalls, endpoint security tools, and backup systems.
Familiarity with security frameworks and best practices.
Ability to troubleshoot complex technical issues independently.
Strong analytical and problem-solving skills
Attention to detail and high level of accuracy
Ability to manage multiple priorities
Strong written and verbal communication skills
High level of professionalism and integrity

Nice To Haves

Industry certifications (CISSP, CISM, Security+, Microsoft, AWS, or similar), preferred.
Experience with SIEM tools and log analysis, preferred.
Knowledge of scripting (PowerShell, Bash, Python), preferred.
Experience in regulated environments (e.g., healthcare, finance, government), preferred.

Responsibilities

Install, configure, and maintain servers.
Manage virtualization platforms and cloud services.
Microsoft AD support for On-Prem and Azure.
Perform system patching, upgrades, and lifecycle management.
Monitor system performance and troubleshoot hardware, software, and network issues.
Maintain backup systems and disaster recovery solutions.
Implement and maintain security controls across servers, endpoints, and network infrastructure.
Configure and manage firewalls, VPNs, intrusion detection/prevention systems, and endpoint protection.
Conduct vulnerability assessments and coordinate remediation efforts.
Monitor logs and alerts; respond to and document security incidents.
Enforce access controls, multi-factor authentication, and least-privilege policies.
Develop and maintain IT security policies and procedures.
Maintain infrastructure, switches, routers, and wireless networks.
Ensure secure remote access solutions for employees and vendors.
Optimize network performance and availability.
Provide Tier 2/3 technical support for escalated issues.
Support onboarding/offboarding processes including account provisioning and deprovisioning.
Maintain technical documentation, system diagrams, and operational procedures.
Conduct user training on cybersecurity awareness and IT best practices.