Engineer III Software (Microsoft 365)

About the role

The Microsoft 365 Engineer III will operate, secure, and advance Crown Castle’s Microsoft 365 platform. They will design and deliver reliable, low-friction collaboration and messaging services across the M365 suite.

Responsibilities

• 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
• Implement and maintain security and compliance controls—data loss prevention, retention, sensitivity labeling, and conditional access—in alignment with current standards
• Audit production readiness of new M365 features and services, defining operational characteristics, maintainability, and adoption guidance
• 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

Requirements

• 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)
• 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
• 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

Qualifications

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

Skills

• Strong analytical, problem-solving, and communication skills
• High degree of collaboration and influence
• Experience with Microsoft 365 platforms
• Experience with PowerShell scripting and automation
• Experience with Microsoft Teams administration
• Experience with Microsoft Purview security and compliance tooling

Benefits

• 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

Pay

The salary range offered for this position is $113,100 - $155,500 annually.

Schedule

This role aligns to a 4:1 hybrid model which is in office Monday-Thursday with the option for remote work on Fridays.