Microsoft 365 System Engineer

This position must be located at Oracle's Nashville, TN location.

About the role

Oracle Cloud Infrastructure (OCI) is seeking an experienced Microsoft 365 Engineer to join our Enterprise Collaboration Services team. This role plays a critical part in delivering secure, reliable, and scalable collaboration, messaging, and identity services supporting Oracle's global workforce of over 150,000 users. You will administer, optimize, secure, and automate Microsoft 365 technologies in a large-scale enterprise environment, working closely with infrastructure, security, networking, and engineering teams to ensure availability, performance, and security of critical platforms including Exchange Online, Proofpoint, SharePoint Online, OneDrive for Business, Microsoft Entra ID (Azure AD), Microsoft Purview, Power MTA, Microsoft Teams, and Eloqua.

The ideal candidate combines strong technical expertise with a passion for operational excellence, automation, and continuous improvement. You will help drive modern workplace initiatives while implementing enterprise-grade security controls, governance policies, and automation solutions that enhance employee productivity and protect organizational assets.

Responsibilities

• Administer and support Microsoft 365 services including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive for Business, Microsoft Entra ID (Azure AD), Microsoft Defender for Office 365, Microsoft Purview, and Microsoft Intune.
• Manage enterprise messaging infrastructure, mail flow, transport rules, email security, and collaboration services in a highly available global environment.
• Configure, maintain, and optimize email security solutions using Proofpoint.
• Implement and manage email authentication technologies including DMARC, SPF, and DKIM to improve email security and domain protection.
• Design, develop, and maintain PowerShell automation and scripting solutions to streamline operational processes and improve service reliability.
• Administer identity and access management technologies including Conditional Access, Multi-Factor Authentication (MFA), Single Sign-On (SSO), and Privileged Identity Management (PIM).
• Monitor system performance, availability, and security while proactively identifying and resolving issues affecting Microsoft 365 services.
• Troubleshoot complex technical issues across collaboration, identity, messaging, and endpoint management platforms.
• Support compliance, governance, retention, eDiscovery, and information protection initiatives using Microsoft Purview and related technologies.
• Collaborate with security, networking, cloud, and engineering teams to design and implement scalable, secure, and resilient enterprise solutions.
• Maintain technical documentation, operational procedures, architectural standards, and knowledge base content.
• Participate in an on-call rotation supporting business-critical collaboration and messaging services.

Requirements

• 6+ years of experience administering Microsoft 365 in large-scale enterprise environments.
• 6+ years of experience administering Proofpoint in large-scale enterprise environments.
• Strong expertise supporting Exchange Online, Microsoft Teams, SharePoint Online, and OneDrive for Business.
• Experience administering Microsoft Entra ID (Azure AD) and Active Directory environments.
• Experience implementing and managing Conditional Access, MFA, SSO, and identity security controls.
• Strong experience with email security platforms such as Proofpoint and Microsoft Defender for Office 365.
• Hands-on experience with Linux operating systems.
• Experience implementing and managing DMARC, SPF, and DKIM.
• Advanced PowerShell scripting and automation experience.
• Experience administering Windows Server and Linux systems.
• Strong troubleshooting, analytical, and problem-solving skills.
• Excellent written and verbal communication skills.
• Ability to work effectively in a fast-paced, highly collaborative environment.

Benefits

• Medical, dental, and vision insurance, including expert medical opinion.
• Short-term and long-term disability insurance.
• Life insurance and AD&D.
• Supplemental life insurance (Employee/Spouse/Child).
• Health care and dependent care Flexible Spending Accounts.
• Pre-tax commuter and parking benefits.
• 401(k) Savings and Investment Plan with company match.
• Paid time off: Flexible Vacation for salaried employees (13 days annually for the first three years, 18 days annually thereafter; accrual prorated for part-time employees working 20–34 hours per week).
• 11 paid holidays.
• Paid sick leave: 72 hours upon hire, refreshes annually, with a maximum carryover cap of 112 hours.
• Paid parental leave.
• Adoption assistance.
• Employee Stock Purchase Plan.
• Financial planning and group legal services.
• Voluntary benefits including auto, homeowner, and pet insurance.

Pay

Hiring range in USD: $91,400 – $187,000 per year. May be eligible for bonus and equity.