Systems Administrator - Security

Job Title: Systems Administrator - Security
Job Location: Troy, MI(Hybrid)

Position Overview

We are seeking a skilled Systems Administrator - Security to administer, secure, maintain, and optimize enterprise IT infrastructure across on-premises, virtualized, hybrid, and cloud environments. The ideal candidate will have hands-on experience in vulnerability management, security remediation, operating system patching, infrastructure hardening, and compliance monitoring across Windows, Linux, VMware, and cloud platforms.

Experience with Tanium or similar infrastructure management and security tools is preferred.

Key Responsibilities

• Infrastructure Administration: Administer and maintain Windows Server, Linux, VMware, and cloud infrastructure to ensure security, stability, and availability.

• Vulnerability Management: Identify, assess, prioritize, track, and remediate vulnerabilities across servers, virtual machines, endpoints, and cloud resources.

• Patching and Compliance: Plan and coordinate operating system and infrastructure patching, validate deployments, monitor patch compliance, and minimize operational disruptions.

• Security Hardening: Implement security baselines, access controls, configuration standards, and hardening procedures to reduce infrastructure risk.

• Security and Compliance Monitoring: Assess system configurations against established security standards, address compliance gaps, and support security audits and reporting.

• Virtualization and Cloud Security: Maintain and secure VMware vSphere environments, virtual machines, and cloud resources, including configurations, permissions, and access controls.

• Security Tools Administration: Use tools for asset discovery, endpoint management, vulnerability assessment, patch deployment, and remediation tracking. Experience with Tanium or similar platforms is an advantage.

• Automation and Scripting: Develop and maintain scripts using PowerShell, Bash, or Python to automate patching, remediation, security validation, and reporting. Experience with Ansible or Terraform is beneficial.

• Troubleshooting and Incident Management: Investigate and resolve infrastructure, configuration, patching, and security-related issues. Maintain accurate incident and change management records.

• Documentation and Collaboration: Maintain technical documentation, security procedures, patching schedules, remediation records, and compliance reports. Collaborate with infrastructure, security, and application teams to resolve issues.

Required Skills and Qualifications

• Hands-on experience in systems administration, infrastructure operations, or infrastructure security.

• Strong knowledge of Windows Server and Linux administration and troubleshooting.

• Experience with vulnerability scanning, risk prioritization, remediation tracking, and security patch management.

• Knowledge of security hardening, access management, configuration compliance, and security baselines.

• Experience with VMware vSphere, virtual machines, and hybrid or cloud infrastructure environments.

• Familiarity with endpoint management, asset discovery, vulnerability management, and patching tools.

• Scripting experience with PowerShell, Bash, or Python.

• Understanding of incident management, change management, technical documentation, and compliance reporting.

• Strong troubleshooting, analytical, communication, and collaboration skills.

Preferred Qualifications

• Experience with Tanium or similar endpoint and infrastructure management platforms.

• Familiarity with Ansible, Terraform, or other infrastructure automation tools.

• Experience supporting enterprise security and compliance initiatives.

• Knowledge of cloud security best practices and infrastructure configuration management.

Work Environment and Schedule

• Hybrid work arrangement requiring two days per week in the office .

• Availability during standard business hours is required.

• Occasional after-hours work may be necessary for scheduled maintenance, patching, and critical security remediation.