Microsoft 365 System Engineer

Please note, this position has to be located at Oracle's Nashville, TN location Oracle Cloud Infrastructure (OCI) is seeking an experienced Microsoft 365 Engineer to join our Enterprise Collaboration Services team. This position plays a critical role in delivering secure, reliable, and scalable collaboration, messaging, and identity services supporting Oracle's global workforce.As a Microsoft 365 Engineer, you will be responsible for the administration, optimization, security, and automation of Microsoft 365 technologies across a large-scale enterprise environment supporting more than 150,000 users worldwide. You will work closely with infrastructure, security, networking, and engineering teams to ensure the availability, performance, and security of critical collaboration 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.What You Will Do Administer and support Microsoft 365 services including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive for Business, Microsoft Entra ID (Azure AD), and Microsoft Purview.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.Only Oracle brings together the data, infrastructure, applications, and expertise to power everything from industry innovations to life-saving care. And with AI embedded across our products and services, we help customers turn that promise into a better future for all. Discover your potential at a company leading the way in AI and cloud solutions that impact billions of lives.True innovation starts when everyone is empowered to contribute. That’s why we’re committed to growing a workforce that promotes opportunities for all with competitive benefits that support our people with flexible medical, life insurance, and retirement options. We also encourage employees to give back to their communities through our volunteer programs.We’re committed to including people with disabilities at all stages of the employment process. If you require accessibility assistance or accommodation for a disability at any point, let us know by emailing View email address on click.appcast.io or by calling View phone number on click.appcast.io in the United States.Oracle is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Oracle will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.Disclaimer:Certain U.S. based or U.S. customer or client-facing roles may be required to comply with applicable requirements, such as immunization/occupational health mandates, and/or drug testing requirements.Range and benefit information provided in this posting are specific to the stated locations onlyUS: Hiring Range in USD from: $91,400 to $187,000 per annum. May be eligible for bonus and equity.Oracle maintains broad salary ranges for its roles in order to account for variations in knowledge, skills, experience, market conditions and locations, as well as reflect Oracle's differing products, industries and lines of business.Candidates are typically placed into the range based on the preceding factors as well as internal peer equity.Oracle US offers a comprehensive benefits package which includes the following:1. Medical, dental, and vision insurance, including expert medical opinion2. Short term disability and long term disability3. Life insurance and AD&D4. Supplemental life insurance (Employee/Spouse/Child)5. Health care and dependent care Flexible Spending Accounts6. Pre-tax commuter and parking benefits7. 401(k) Savings and Investment Plan with company match8. Paid time off: Flexible Vacation is provided to all eligible employees assigned to a salaried (non-overtime eligible) position. Accrued Vacation is provided to all other employees eligible for vacation benefits. For employees working at least 35 hours per week, the vacation accrual rate is 13 days annually for the first three years of employment and 18 days annually for subsequent years of employment. Vacation accrual is prorated for employees working between 20 and 34 hours per week. Employees working fewer than 20 hours per week are not eligible for vacation.9. 11 paid holidays10. Paid sick leave: 72 hours of paid sick leave upon date of hire. Refreshes each calendar year. Unused balance will carry over each year up to a maximum cap of 112 hours.11. Paid parental leave12. Adoption assistance13. Employee Stock Purchase Plan14. Financial planning and group legal15. Voluntary benefits including auto, homeowner and pet insuranceThe role will generally accept applications for at least three calendar days from the posting date or as long as the job remains posted.Career Level - IC46+ 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.Strong experience with Linux operating system.Hands-on 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.ResponsibilitiesAdminister and support Microsoft 365 services including:Exchange OnlineMicrosoft TeamsSharePoint OnlineOneDrive for BusinessMicrosoft Entra ID (Azure AD)Microsoft Defender for Office 365Microsoft PurviewMicrosoft IntuneManage enterprise Proofpoint messaging environments, mail flow, and email security solutions.Configure and maintain email authentication technologies including:DMARCSPFDKIMAdminister identity and access management solutions, including:Conditional AccessMulti-Factor Authentication (MFA)Single Sign-On (SSO)Privileged Identity Management (PIM)Develop and maintain PowerShell automation and scripting solutions to improve operational efficiency and service reliability.Monitor, troubleshoot, and resolve complex issues across Microsoft 365 services and integrated enterprise platforms.Implement security best practices aligned with Zero Trust principles and organizational compliance requirements.Support Microsoft 365 governance, retention, compliance, eDiscovery, and information protection initiatives.Collaborate with security, network, cloud, and engineering teams to design and implement scalable enterprise solutions.Maintain technical documentation, architecture diagrams, operational procedures, and knowledge base articles.Participate in an on-call rotation supporting critical enterprise collaboration services.Full timePosting Date: 2026-08-06