Senior Microsoft 365 Platform Engineer
Location: Boston, Massachusetts
Country: United States
Category: Infrastructure & Helpdesk
Workplace Location: Onsite
Employment Type: Direct Hire/Perm
Posted Date: March 6, 2026
Job ID: 642143
Job Description
Job Title
Senior Microsoft 365 Platform Engineer
LocationOnsite – Boston, MA (4 days per week; parking and shuttle available)
Employment TypeFull-time, Permanent
Salary Range$140,000–$150,000/year
Visa Sponsorship / H1BNot accepted
Background/Reference ChecksStandard background check required
Interview ProcessTwo virtual screens with Infra Manager and SME, followed by onsite interview with the leadership team
Role OverviewThe Senior Microsoft 365 Platform Engineer serves as the operational and engineering core of the Microsoft ecosystem. This role manages tenant-wide services, implements architectural standards, and drives automation-first operations. The engineer ensures reliability, security, and user experience across Exchange Online, Teams, SharePoint/OneDrive, Entra ID, Intune, Defender, and Power Platform, handling Tier 2/3 escalations and leading deployments and changes.
Key Responsibilities Microsoft 365 Administration- Administer, configure, and maintain workloads across Exchange Online, Teams, SharePoint Online/OneDrive
- Manage Entra ID objects, Conditional Access, MFA, identity lifecycle, and directory hygiene
- Operate Intune for device onboarding, compliance policies, app packaging/deployment, and security baselines
- Handle Tier 2/3 incidents/problems; manage change control and service communications
- Implement reference designs and standards defined by the Architect
- Build and maintain PowerShell and Graph automations for provisioning, reporting, remediation, and license hygiene
- Lead feature deployments and migrations; coordinate pilots and rollout plans
- Enforce DLP, retention, sensitivity labels, Conditional Access, and Defender controls
- Maintain audit/compliance reporting; support assessments and remediation activities
- Administer environments, connectors, and DLP policies; support solution ALM and pipelines
- Provide enablement to citizen developers within guardrails
- Provision Teams/SharePoint sites, implement IA/metadata/search patterns, and support content lifecycle
- Assist with migrations from legacy file services to SharePoint Online
- Provide telemetry and usage insights for capacity planning and license optimization
- Engage Microsoft Premier/Unified Support for escalations and proactive services
- 5+ years administering Microsoft 365 at enterprise scale (1,000+ users)
- Deep experience with Exchange Online, Teams, SharePoint/OneDrive, Entra ID, Intune, and Defender
- Strong PowerShell and Graph API skills for automation and reporting
- Proven delivery of tenant-wide changes, migrations, and complex incident resolution
- Practical knowledge of Purview features (retention, DLP, eDiscovery) and security baselines
- Microsoft Certified: Enterprise Administrator Expert and/or Messaging/Teams/Endpoint Administrator
- Experience with Power Platform administration and CI/CD/ALM patterns
- Experience in environments with regulatory or contractual compliance requirements
- Timely resolution of incidents and changes
- Compliance with platform configuration standards
- Increased automation coverage and reduced manual tasks
- Tenant health and performance optimization
- High user satisfaction with Microsoft 365 services
EEO Statement
The staffing industry has seen an increase in people falsely representing themselves as recruiters to gather personal information from job seekers. For your safety, do not provide sensitive data to anyone you have not spoken with thoroughly, never provide banking information during the application process, and always double check the email address of the Recruiter to ensure it’s from an official Planet domain (@theplanetgroup.com or @launchcg.com) - and not a domain with an alternative extension like .net, .org, or .jobs.
The Planet Group and our companies are equal opportunity employers. It is our practice not to discriminate against any employee or applicant based on any criteria, condition or basis protected by laws or regulations in the locations where we do business. All qualified applicants are encouraged to apply. We celebrate diversity and are committed to providing an environment of mutual respect. We believe that diversity, equity, and inclusion enable us to better meet our mission and values while serving our clients across the globe. If you have a disability or handicap and would like us to accommodate you in any reasonable way, please inform your recruiter, or contact us, so that we can discuss the appropriate alternatives available.
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About The Planet Group
The Planet Group is a global professional services firm delivering strategic staffing and advisory solutions. We operate at the intersection of talent and transformation – connecting the right people with the right opportunities in the areas of technology, engineering, accounting & finance, digital marketing, and manufacturing.
As one of the largest staffing companies in the US, we operate with a global reach and a performance-first mindset. We partner with clients to move fast, stay agile, and drive measurable results – building high-impact teams that fuel transformation and growth.
