Senior System Administrator

Rebel Athletic • Carrollton, TX

8d • Onsite

About The Position

Rebel Athletic is seeking a Senior System Administrator to lead Systems Administration and Helpdesk functions, provide hands-on technical expertise, and guide the daily work of junior IT team members. The role helps maintain a secure, reliable, and scalable technology environment supporting company operations. The successful candidate will work across Microsoft 365, Entra ID, Intune, Shopify, Freshservice, and security governance in a fast-paced environment.

The position leads IT operations and technical escalations, administers company systems and SaaS platforms, and advances cybersecurity, documentation, upgrades, migrations, and automation. It also provides Tier 2 and Tier 3 technical support. This is a full-time position in a professional office and warehouse environment, primarily office-based, with occasional travel between locations potentially required. Availability outside normal business hours may be needed for scheduled maintenance, urgent issues, or high-priority projects.

Rebel Athletic LLC is an Equal Opportunity Employer and prohibits retaliation against individuals who raise concerns or participate in investigations.

Requirements

• At least 5 years of Systems Administration experience, including leadership responsibilities.
• Expertise with Microsoft 365, Entra ID, Intune, Windows/macOS, and security governance.
• Experience administering phishing/spam training tools, Freshservice, and Shopify.
• Strong communication, leadership, problem-solving, and escalation-management skills.
• Valid driver’s license if travel between Rebel Athletic locations is required.

Nice To Haves

• PowerShell scripting or automation experience.
• Experience with Zero Trust architecture, MFA, or conditional access design.
• Exposure to SIEM/SOC operations.
• Relevant Microsoft or security certifications.

Responsibilities

• Lead and mentor System Administrators and Helpdesk team members.
• Oversee daily IT operations, escalations, and workload prioritization.
• Develop IT processes, standard operating procedures, documentation, and training materials.
• Serve as the top technical escalation point for system and infrastructure issues.
• Manage Microsoft 365, including Exchange Online, Teams, SharePoint, and OneDrive.
• Administer Entra ID identity management, including MFA, SSO, conditional access, and governance.
• Oversee Intune device management and user lifecycle administration.
• Lead cybersecurity initiatives, including phishing and spam awareness training.
• Manage email security and threat protection platforms.
• Conduct vulnerability assessments, patch compliance, and system hardening.
• Administer Shopify accounts, permissions, and platform integrations.
• Manage Freshservice workflows, automations, and asset management.
• Support additional SaaS platforms and integrations across the business.
• Lead upgrades, migrations, and automation projects across IT systems.
• Maintain IT documentation, standards, and architecture records.
• Provide Tier 2 and Tier 3 advanced technical support to the organization.

Benefits

• Paid time off (PTO).
• Company-paid holidays available immediately upon hire.
• Annual discretionary bonus opportunity.
• Medical insurance.
• Dental insurance.
• Vision insurance.
• Life insurance.
• Voluntary benefits, including supplemental life insurance, short-term disability, long-term disability, and additional coverage options.
• 401(k) plan with company match.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed