Sargent & Lundy is a global leader in power and energy consulting, where innovation meets integrity, diversity, and a commitment to quality. Our distinctive capabilities provide domestic and international clients and partners with a thoroughly reliable source of comprehensive expertise. Sargent & Lundy offers challenge, flexibility, competitive salaries and benefits.

We are seeking an experienced Senior Microsoft 365 Administrator to join our IT Operations team. In this role, you will be the subject-matter expert for Microsoft 365 workloads—Exchange Online, Outlook, Teams, SharePoint, Purview, and Entra ID—ensuring the reliability, security, and optimal performance of our collaboration and productivity platforms. You will partner closely with IT architects, security, and business stakeholders to design, implement, and support enterprise-grade solutions that empower our users and protect our data.

Key Responsibilities

Administration & Operations

• Provision, configure, and manage user identities, groups, and licenses in Entra ID (Azure AD).
• Administer Exchange Online mailboxes, mail flow rules, hybrid connectivity, and retention policies.
• Oversee Outlook on the web/mobile configuration, mailbox policies, and troubleshoot client connectivity.
• Configure, secure, and maintain Microsoft Teams (including Teams Voice), meeting policies, and telephony integrations.
• Manage SharePoint Online sites, site collections, permissions, hub sites, and policies for external sharing.
• Implement and maintain data governance and compliance controls with Microsoft Purview (e.g., DLP, Information Protection, Insider Risk Management).
• Develop best practices, governance frameworks, and lifecycle management plans for collaboration services.

Security & Compliance

• Enforce conditional access, multifactor authentication, and identity protection policies in Entra ID.
• Configure retention labels, sensitivity labels, and compliance policies across Exchange, Teams, and SharePoint via Purview.
• Conduct periodic audits, reviews of access, and remediation of security vulnerabilities.

 Monitoring & Troubleshooting

• Utilize Microsoft 365 admin center, Defender portal, and PowerShell to monitor service health, usage, and security alerts.
• Investigate and resolve complex issues related to mail routing, client connectivity, Teams meetings, and SharePoint access.
• Develop and maintain operational runbooks, automation scripts (PowerShell, Graph API), and dashboards.

Collaboration & Support

• Work with service desk and application teams to integrate third-party tools and enforce change management.
• Provide end-user training, documentation, and proactive communications on feature updates and best practices.

Required Skills and Experience:

• Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent work experience)

• Microsoft 365 Platform

  - 5 plus years administering Microsoft 365 workloads: Exchange Online, Outlook (OWA & desktop clients), Teams, SharePoint Online

  - Deep expertise in Entra ID (Azure AD) user and group management, conditional access, and identity protection

  - Hands-on with Microsoft Purview (Data Loss Prevention, Information Protection, Compliance Manager)

  - Strong PowerShell scripting skills for automation (Exchange Online Management Shell, Microsoft Graph PowerShell)

  - Familiarity with hybrid Exchange (on-premises coexistence), SMTP, DNS, and mail routing

• Security & Compliance

- Implemented multifactor authentication, conditional access, and identity governance

- Knowledge of data classification, retention labeling, and regulatory compliance frameworks (e.g., GDPR, HIPAA)

• Soft Skills

- Excellent analytical and problem-solving abilities

- Strong verbal and written communication—capable of translating technical concepts for business stakeholders

- Collaborative and supportive in a team environment

Preferred Qualifications

• Microsoft Certified: Enterprise Administrator Expert or equivalent
• Experience with Microsoft Endpoint Manager (Intune)
• Knowledge of network protocols, firewalls, and proxies as they relate to cloud services
• Familiarity with third-party M365 management tools (e.g., Quest, AvePoint)

We do not sponsor employees for work authorization in the U.S. for this position.

At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.

Sargent & Lundy is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any protected status as defined by applicable law.