Staff M365 Platform Engineer & Owner

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Staff M365 Platform Engineer & Owner in United States.

This role offers a unique opportunity to serve as the technical owner and strategic operator for an enterprise Microsoft 365 GCC High environment. You will lead complex configurations, migrations, and automations while translating high-level governance policies into actionable technical controls. The position blends hands-on engineering with platform stewardship, giving you the chance to directly impact operational efficiency, security, and compliance. You will collaborate with internal teams, vendors, and stakeholders to maintain a secure, high-performing environment while driving innovation and continuous improvement. This role is ideal for a highly skilled individual contributor who thrives in a dynamic, fast-paced technology environment and enjoys tackling challenging M365 platform projects.

• Serve as the primary technical owner of the M365 GCC High tenant, overseeing Exchange, SharePoint, Teams, and Entra ID workloads
• Lead hands-on administration of mail flow, DNS, and transport rules, ensuring GCC High compliance and reliability
• Develop and maintain automation and scripting using PowerShell and Graph API for lifecycle management, site provisioning, and security auditing
• Implement governance policies as technical controls, including DLP, Conditional Access, and retention labels
• Execute tenant-to-tenant migrations during mergers and acquisitions, including mailbox, drive, and site data migrations
• Validate vendor deliverables, ensuring alignment with technical, security, and compliance standards
• Provide Tier 3 support for complex platform issues and manage the rollout of new M365 features
• Maintain technical documentation, runbooks, architectural diagrams, and SOPs

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Requirements:

• 6–8+ years of hands-on experience managing M365/Exchange Online in enterprise environments
• Expertise in GCC/GCCH cloud boundaries and their technical limitations
• Strong proficiency in Entra ID (Azure AD), including identity synchronization, application registrations, and security/compliance center configurations
• Advanced PowerShell scripting skills for large-scale M365 workload management
• Experience executing at least one major tenant-to-tenant migration
• Bachelor’s degree in Computer Science, Information Systems, or related technical field
• Knowledge of NIST 800-171, CMMC, or DFARS 7012 compliance requirements
• U.S. Citizenship required, with eligibility to obtain and maintain a U.S. government security clearance (Secret or higher)
• Preferred certifications: Microsoft 365 Administrator Expert, Microsoft 365 Messaging Administrator Associate, Microsoft Identity and Access Administrator (SC-300), CompTIA Security+/CySA+/CASP+
• Strong analytical, organizational, and problem-solving skills with the ability to operate independently

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Benefits:

• Competitive base salary range: $131,962 - $172,773, with total compensation including bonus and equity
• Remote work flexibility (up to 3 days per week), with offices in Bothell, WA, and College Park, MD
• Comprehensive medical, dental, and vision insurance
• Matching 401(k) retirement plan
• Unlimited PTO and paid holidays
• Parental and adoption leave
• Home technology stipend and legal insurance
• Professional development opportunities and supportive, inclusive company culture