Staff M365 Platform Engineer & Owner

IonQ, Inc. [NYSE: IONQ] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including Amazon Web Services, and AstraZeneca achieve 20x performance results and accelerate innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company achieved 99.99% two-qubit gate fidelity, setting a world record in quantum computing performance.

Headquartered in College Park, Maryland, IonQ has operations in California, Colorado, Massachusetts, Tennessee, Washington, Italy, South Korea, Sweden, Switzerland, Canada, and the United Kingdom. Our quantum computing services are available through all major cloud providers, while we also meet the needs of networking and sensing customers across land, sea, air, and space. IonQ is making quantum platforms more accessible and impactful than ever before.  

IONQ is seeking a Staff M365 Platform Engineer & Owner to serve as the primary technical lead and operational steward for our Microsoft 365 GCC High ecosystem. This role is designed for a high-level individual contributor who can bridge the gap between strategic governance and deep technical execution. You will own the technical roadmap for our tenant while personally driving the complex configurations, migrations, and automations required to maintain a secure, compliant, and high-performing environment.

• Tenant Stewardship: Act as the primary technical owner for the M365 GCC High tenant, ensuring all workloads (Exchange, SharePoint, Teams, Entra ID) are integrated and optimized.
• Hands-on Administration: Lead the technical configuration of mail flow, transport rules, and DNS for Exchange Online, ensuring GCC High compliance and reliability.
• Automation & Scripting: Build and maintain PowerShell scripts and Graph API integrations to automate lifecycle management, site provisioning, and security auditing.
• Governance Implementation: Translate high-level governance policies into technical controls, including DLP, Conditional Access, and retention labels.

• Technical Execution: Lead the hands-on migration of identities and data (mailboxes, drives, sites) during Mergers and Acquisitions, utilizing tools like ShareGate or BitTitan.
• Mail Flow Design: Design and validate complex mail routing and shared/resource mailbox mapping during tenant consolidations.
• Vendor Validation: Review and validate the technical deliverables of external partners to ensure they meet IONQ’s engineering and compliance standards.

• Tier 3 Support: Serve as the final escalation point for complex technical issues involving mail routing, identity synchronization, or platform performance.
• Service Lifecycle: Manage the rollout of new M365 features, assessing their impact on the GCC High environment and security posture.
• Documentation: Create and maintain technical runbooks, architectural diagrams, and standard operating procedures (SOPs).

If you are interested in being a part of our team and mission, we encourage you to apply!