Engineer III Software (Microsoft 365)

POSITION TITLE: Engineer III Software (Microsoft 365) (P3)

For more than three decades, Crown Castle has led the way in shared communications infrastructure, delivering profitable solutions by connecting communities, businesses, and people, and enabling each to thrive with reliable access to voice and data in more places, faster than ever before. When you join Crown Castle, you become part of a dynamic team of passionate and collaborative professionals engaging in complex challenges and contributing to projects that shape the future of life and work.

ABOUT THE ROLE The Microsoft 365 Engineer III will be hands-on in operating, securing, and advancing Crown Castle’s Microsoft 365 platform. You will design and deliver reliable, low-friction collaboration and messaging services across the M365 suite—SharePoint Online, Exchange Online, Teams, OneDrive, and Entra ID. Your contributions will introduce standardization, modernization, and automation, and you will build and support the M365 services consumed by teammates across the enterprise.

WHAT YOU WILL DO

• Engineer, administer, and optimize the Microsoft 365 platform across all core workloads—Exchange Online, SharePoint Online, Teams, OneDrive, and Entra ID—ensuring reliable and performant service delivery
• Serve as the senior subject-matter expert for SharePoint Online, designing site and information architecture, permissions models, and governance for enterprise content and collaboration
• Administer and optimize Exchange Online and hybrid Exchange environments, including mail flow, transport rules, connectors, and coexistence with on-premises Exchange
• Lead messaging migrations and hybrid configurations between on-premises Exchange and Exchange Online, ensuring secure and seamless mailbox coexistence
• Develop automation using PowerShell, Microsoft Graph, and the Power Platform to standardize provisioning, configuration, and lifecycle management across M365 services
• Implement and maintain security and compliance controls—data loss prevention, retention, sensitivity labeling, and conditional access—in alignment with current standards
• Assess production readiness of new M365 features and services, defining operational characteristics, maintainability, and adoption guidance
• Establish best practices and build tooling to drive consistent configuration, monitoring, and the adoption of M365 capabilities by teams across the organization
• Collaborate with stakeholders, architects, and business partners to ensure current and planned M365 solutions meet the growth and transformation needs of our rapidly scaling organization WHAT YOU WILL NEED TO SUCCEED

Education Qualifications

• Bachelor’s degree or higher or equivalent in Computer Science, Engineering, Information Systems, or related discipline

• Microsoft 365 certifications preferred (e.g., Microsoft 365 Certified: Administrator Expert, Messaging Administrator Associate, Teams Administrator Associate) Experience Qualifications

• 5+ years of experience administering and engineering Microsoft 365 in large enterprise environments, with broad competency across all core workloads

• Deep, demonstrable expertise in SharePoint Online—site collection and information architecture, permissions and governance, content migration, and end-user enablement

• Extensive proficiency administering Exchange Online, including mail flow, transport rules, connectors, mobile device access, mail enabled security groups, and message hygiene

• Hands-on experience with on-premises Exchange Server and Exchange hybrid deployments, including mailbox migrations and coexistence

• 3+ years of experience with PowerShell scripting and automation for M365 administration (Exchange Online, SharePoint Online, and Microsoft Graph)

• Experience with Microsoft Teams administration, including governance, policies, and telephony/voice where applicable

• Working knowledge of Entra ID (Azure AD), including identity, conditional access, and directory synchronization (Entra Connect / AAD Connect)

• Familiarity with Microsoft Purview security and compliance tooling—DLP, retention, and sensitivity labels

• High degree of collaboration and influence; able to dissect complicated technical problems and apply sound judgment

• Strong analytical, problem-solving, and communication skills, with the ability to document, standardize, and continuously improve operational practices Organizational Relationship

Reports to: Manager Workplace Tech and Collaboration

Title(s) of direct reports (if applicable): N/A

Where You Will Work To optimize collaboration, relationship building, and key stakeholder engagement, this roles aligns to a 4:1 hybrid model which is in office Monday-Thursday with the option for remote work on Fridays.

YOUR COMPANY BENEFITS At Crown Castle, we do our best to ensure you have access to the resources you need to live a healthy and happy life no matter where you are in life. Our benefits are built around your individual needs, covering physical, mental, and financial health and designed to enhance your quality of life.

We are proud to offer a full suite of health and wealth benefits for you and your loved ones. Below are a few of the key highlights of the many benefits we provide.

• Comprehensive healthcare plans with highly company subsidized premiums and up to $2,000 annual company contribution to your Health Savings Account (HSA base plan for employee and dependents).
• Market-leading 401(k) plan, which includes up to 10% company contributions through our 5% match and 5% profit sharing program (based on employee contributions).
• New-child leave up to 8 weeks of 100% paid leave upon birth or legal adoption of a new child. Birth mothers are eligible for up to 8 weeks of additional 100% paid medical leave.
• Tuition reimbursement up to $5,250 per year of eligible tuition and fees.
• Crown Castle scholarship program awarding up to $10,000 per recipient each year for eligible dependent children of employees and interns.
• Matching charitable contributions to qualified charitable organizations of up to $1,000 per year per teammate.
• Generous paid time-off for eligible full-time employees (minimum 18 days per year based on years of service).
• 10 company holidays plus 2 floating holiday.
• All offices provide free beverages and snacks. Compensation The salary range offered for this position is $113100 - $155500 annually. A candidate's offer is determined by various factors including but not limited to, depth of experience, role-related knowledge and skills, relevant education or training, internal alignment, and work location. Depending on the position offered, the compensation package may also include incentive compensation opportunities in the form of a discretionary annual cash bonus or commissions, and equity incentives.

Additional Information If you are interested in joining our team, please visit the Crown Castle careers site to apply. We do not accept resumes from agencies, headhunters, or other third-party suppliers who have not signed a formal agreement with us. This position will remain posted until filled.