Senior Systems Administrator – Microsoft 365 Email & Collaboration

Location:

2727 N Central Ave, Phoenix, Arizona 85004 United States of America

This position is not eligible for employer sponsorship.

 

To ensure a fair and consistent evaluation process, candidates are expected to complete all interviews and assessments independently and without the use of artificial intelligence tools (including AI-generated responses, prompts, or real-time assistance). Use of AI throughout the application and recruiting process may result in removal from consideration. Our goal is to get to know your authentic experiences, communication style, and problem-solving approach.

HYBRID POSITION – Phoenix, AZ (2–3 days per week in office)

We are seeking a Senior Systems Administrator to join our Microsoft 365 Email & Collaboration team. This role is responsible for the design, administration, security, and support of Microsoft 365 services including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Entra ID, and related collaboration technologies.

The ideal candidate will have strong expertise in Microsoft 365 administration, email security, messaging infrastructure, and enterprise collaboration platforms. This individual will lead complex projects, support secure SMTP relay and application integration solutions, provide white-glove support for high-visibility initiatives, and serve as an escalation point for critical user and business application issues. The role requires close collaboration with cybersecurity teams, developers, business units, and executive stakeholders to deliver secure, reliable, and scalable communication and collaboration services.

Key Responsibilities

• Administer and support Microsoft 365 services including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, and Entra ID.
• Lead and participate in strategic projects involving security, compliance, migrations, automation, and platform modernization.
• Design, support, and troubleshoot enterprise email routing solutions, including SMTP relay services, application mail flow, and secure email delivery.
• Partner with development teams and business units to integrate custom and third-party applications with Microsoft 365 services, Exchange Online, SMTP infrastructure, and identity platforms.
• Investigate and resolve complex Tier 3 escalations involving messaging, collaboration, identity, access management, and business-critical applications.
• Implement and maintain Microsoft 365 security controls, governance standards, and compliance requirements.
• Maintain and secure mail flow between cloud services, on-premises systems, business applications, and external vendors.
• Analyze and resolve complex messaging issues involving SMTP authentication, connectors, transport rules, SPF, DKIM, DMARC, and email security controls.
• Develop and maintain PowerShell automation, reporting, and operational processes.
• Provide white-glove support for executive, enterprise, and high-visibility initiatives.
• Collaborate with cybersecurity, infrastructure, networking, and application teams to improve service reliability, security, and operational effectiveness.
• Lead projects involving application modernization, cloud migrations, messaging platform enhancements, and secure integration of enterprise applications.

Preferred Qualifications

• 5+ years of experience administering Microsoft 365 services in an enterprise environment.
• Strong hands-on experience with Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, and Entra ID.
• Experience with SMTP relay services, email routing, mail flow troubleshooting, and application integrations.
• Knowledge of Microsoft 365 Security and Compliance, Exchange Online Protection, Defender, Conditional Access, and identity security best practices.
• Advanced PowerShell scripting and automation experience.
• Experience supporting large-scale environments and managing complex technical projects.
• Strong troubleshooting, communication, and customer service skills with the ability to work directly with executives and business leaders.
• Microsoft 365, Security, Azure, or related certifications preferred.

This position is ideal for a senior-level administrator who enjoys a balance of engineering, security, project leadership, and high-touch customer engagement while supporting enterprise messaging and collaboration services.

U‑Haul Offers:

• Medical insurance
• Prescription drug plans
• Dental & Vision plan with hearing care discounts
• Onsite medical clinic for team members and eligible family members
• New indoor fitness gym (Midtown Phoenix campus)
• Get Fit Gym Reimbursement Program
• Registered Dietitian Program
• WeightWatchers®
• CVS Virtual Care
• U‑Haul Kids Program
• 24‑Hour Nurse Line
• Wellness Program (Healthier You initiatives & challenges)
• Mindset App Reimbursement
• Pet Insurance & Wellness plans
• Career stability
• Opportunities for advancement
• Valuable on‑the‑job training
• Tuition Reimbursement Program
• Free online courses for personal and professional development at U‑Haul University®
• 401(k) Savings Plan
• Employee Stock Ownership Plan (ESOP)
• Company‑paid life insurance
• Voluntary life insurance options
• Short-Term and Long‑Term Disability
• Critical Illness, Accident & Hospital Indemnity plans
• Business & business travel insurance
• MetLaw Legal Program
• MetLife Auto & Home Insurance
• LifeLock Identity Theft Protection
• Dave Ramsey’s SmartDollar® Financial Wellness Program
• U‑Haul Federal Credit Union
• Paid holidays, vacation, and sick time
• You Matter Employee Assistance Program (EAP)
• Discounts on cell phone plans, hotels, computers, vehicles & more
• Community involvement & volunteer opportunities
• U‑Haul Mothers Program (Paid maternity leave)

#LI-DJ1

U-Haul Holding Company, and its family of companies including U-Haul International, Inc. (“U-Haul”), continually strives to create a culture of health and wellness. Consistent with applicable state law, U-Haul will not hire or re-hire individuals who use nicotine products.  The states in which U-Haul will decline to hire nicotine users are: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Pennsylvania, Texas, Utah, Vermont, Virginia, and Washington. U-Haul has observed this hiring practice since February 1, 2020 as part of our commitment to a healthy work environment for our team.   

U-Haul is an equal opportunity employer. All applicants for employment will be considered without regard to race, color, religion, sex, national origin, physical or mental disability, veteran status, or any other basis protected by applicable federal, provincial, state or local law. Individual accommodations are available on requests for applicants taking part in all aspects of the selection process. Information obtained during this process will only be shared on a need to know basis.