Senior Microsoft 365 Administrator — Platform Security

JoCo; Tulsa (OK); On-site; USD 90,000 - 120,000; Full time

Job summary

JoCo is seeking a Systems Administrator to lead the Microsoft 365 environment, guiding strategy and improving security, governance, and reliability. The role mentors team members and collaborates with business and leadership teams to deliver scalable technology solutions.

The position requires extensive Microsoft 365 expertise and 8-15+ years of IT experience, with on-call responsibilities and a strong focus on security and compliance.

Qualifications

• Extensive Microsoft 365 expertise, particularly with Exchange Online, Teams, SharePoint Online, OneDrive, Copilot, and Entra ID.
• 8-15+ years of relevant IT experience.
• Strong troubleshooting skills and ability to resolve sophisticated issues and identify root causes.
• Ability to present technical information to management audiences and coordinate with vendors.

Responsibilities

• Oversee the Microsoft 365 ecosystem, including Exchange Online, Teams, SharePoint Online, OneDrive, Copilot, and Entra ID.
• Develop collaboration-platform strategies by reviewing upcoming Microsoft capabilities, assessing risk and business value, and coordinating deployment readiness.
• Provide Tier 3 support, investigate complex incidents, lead post-incident reviews, and document improvements that strengthen platform performance.
• Administer enterprise identity and access controls, including single sign-on, multifactor authentication, Conditional Access, privileged access, and identity governance.
• Enhance security and regulatory compliance through Microsoft Purview, data loss prevention, retention policies, eDiscovery, data classification, and insider-risk controls.
• Translate business and technical needs into integrated Microsoft 365 solutions using effective project management and cross-functional coordination.
• Present technical recommendations to different levels of management and maintain productive relationships with vendors.
• Coach analysts and provide technical direction across the broader IT team.
• Participate in a 24/7 on-call rotation and respond proactively to urgent support needs.

Skills

Leadership

Vendor management

Troubleshooting

Communication

Cross-functional collaboration

Education

Bachelor's degree in IT field

Tools

Microsoft 365

Exchange Online

Teams

SharePoint Online

OneDrive

Copilot

Entra ID

Microsoft Purview

Job description

JoCo is seeking a Systems Administrator to lead the Microsoft 365 environment, guiding strategy and improving security, governance, and reliability. The role mentors team members and collaborates with business and leadership teams to deliver scalable technology solutions.

The position requires extensive Microsoft 365 expertise and 8-15+ years of IT experience, with on-call responsibilities and a strong focus on security and compliance.