System Administrator - Microsoft 365 Cloud

Quantum Machines (QM) is a global leader in control systems for quantum computing, a field on the verge of exponential growth. Our innovative hardware and software mark a groundbreaking approach in quantum computer control, scaling from individual qubits to expansive arrays of thousands. At the core of QM lies a passionate and ambitious team committed to reshaping the construction and operation of quantum computers. Our work is fueled by a deep understanding of customer needs, driving us to deliver unparalleled solutions in this revolutionary field.

We are seeking a highly experienced Microsoft 365 Cloud System Administrator to own the administration, configuration, and security of our enterprise Microsoft 365 tenant(s). The ideal candidate has proven hands-on expertise managing Microsoft 365 at scale, including Intune, Exchange Online, SharePoint/OneDrive, Teams, Entra ID, Defender, and related integrations

You will play a key role in ensuring availability, governance, identity and access control, endpoint compliance, and modern security posture across the entire Microsoft cloud ecosystem, with close collaboration across IT, Security, and business stakeholders.

Key Responsibilities

Microsoft 365 Tenant Administration

Administer and maintain enterprise-scale M365 tenants, including configuration, governance, and operational support.
Oversee service health, usage reporting, licensing, and user lifecycle management.
Maintain documentation of configurations, workflows, and operational procedures.

Microsoft Intune / Endpoint Management (Full Scope)

Own all aspects of Intune administration, including:
Device enrolment (Windows, macOS, iOS/iPadOS, Android)
Configuration profiles, compliance policies, and security baselines
Autopilot provisioning, device naming policies, and lifecycle
Conditional Access integration with device compliance
Endpoint security policies (AV, firewall, ASR rules, BitLocker, etc.)

Identity & Access Management (Entra ID / SSO)

Manage and secure Microsoft Entra ID (Azure AD) for identity, authentication, and access governance.
Configure and maintain SSO integrations with SaaS applications using SAML/OAuth/OIDC.
Implement and optimize:
Conditional Access policies
MFA enforcement and authentication methods policy
Privileged Identity Management
Identity Protection policies (risk-based controls)

Security & Threat Protection

Deploy and manage Microsoft Defender stack relevant to the organization
Integrate and manage endpoint security posture with non-Microsoft EDR platforms, such as Sentinel One/CrowdStrike
Collaborate with Security teams to implement detection and response workflows, ensure coverage, and align with organizational policy.

Messaging & Collaboration

Exchange Online

Administer Exchange Online policies and configurations
Implement email security best practices and support incident response when needed.

Microsoft Teams

Administer Teams policies and governance - Teams lifecycle policy, app permissions, meeting policies; External access and guest collaboration settings

SharePoint / OneDrive

Administer SharePoint Online and OneDrive settings, including:
Site governance, permissions, and sharing controls
Sensitivity labels and information protection controls (if used)
Sync and storage management, auditing and access policies

Azure & Cloud Infrastructure

Support Azure identity, security, and basic cloud resources relevant to M365 integrations.
Manage Azure configuration related to:
Entra ID integrations
Conditional Access
Hybrid identity (if applicable)
Azure security settings and monitoring

Policy, Compliance, and Governance

Implement and maintain governance models across identity, endpoint, data sharing, and collaboration tools.
Support compliance initiatives, audits, and reporting needs.
Maintain secure tenant configurations aligned with best-practice frameworks (e.g., CIS, Microsoft Secure Score, NIST).

Requirements:

Required Qualifications

3-5 years of hands-on experience administering Microsoft 365 in an enterprise environment.
Proven expertise managing Intune (full end-to-end: enrolment policy deployment compliance reporting), Exchange Online, SharePoint Online / OneDrive, Microsoft Teams, Microsoft Entra ID, Conditional Access policies
Strong understanding of email security fundamentals and implementations: Transport rules, threat policies, anti-phishing controls SPF, DKIM, DMARC; experience integrating M365 security posture with non-Microsoft EDR/XDR tools
Strong troubleshooting capability across identity, endpoint, collaboration, and security layers.
Experience in scripting/automation
Experience with Microsoft Defender for Endpoint/Office 365/Cloud Apps.

Key Skills & Competencies

Enterprise cloud administration mindset (scale, governance, standardization)
Strong security-first approach
Ability to translate business needs into practical policies
Comfortable owning production-critical services
Excellent communication and cross-functional collaboration
Structured documentation and operational discipline

Preferred Skills:

Strong plus

Experience with Microsoft Purview (DLP, retention, sensitivity labels, eDiscovery)
Familiarity with Zero Trust architecture and modern security frameworks.
Knowledge of SIEM integrations (Microsoft Sentinel, Splunk, etc.).