Oracle

Builds databases, business apps and cloud services

Microsoft 365 Engineer

Enterprise ApplicationsPosted on Nov 11

Full-timeDublin, IrelandNo salary listedIn-person

About the Job

Requirements

At least 6 years of hands-on experience administering Microsoft 365 in enterprise environments.
Strong expertise in Exchange Online, enterprise messaging architecture, mail flow, and troubleshooting.
Extensive hands-on experience administering Proofpoint in enterprise environments; 6 or more years is ideal.
Experience with email security and authentication technologies, including DMARC, SPF, and DKIM.
Strong knowledge of Microsoft Entra ID (Azure AD), Active Directory, and identity security technologies.
Experience supporting Microsoft Teams, SharePoint Online, and OneDrive for Business.
Practical experience with PowerShell and automating Microsoft 365 administrative processes.
Strong troubleshooting skills across Microsoft 365, messaging, security, and infrastructure environments.
Experience working with Windows Server and Linux systems.
Ability to independently own technical initiatives while collaborating with distributed engineering teams.

Responsibilities

Administer, maintain, and optimize Microsoft 365 services, including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive for Business, Microsoft Entra ID, and Microsoft Purview.
Manage enterprise messaging infrastructure, including mail flow, routing, transport rules, and email security.
Administer and optimize Proofpoint email security solutions to ensure secure and reliable organizational messaging.
Implement and maintain email authentication and security technologies such as DMARC, SPF, and DKIM.
Troubleshoot complex technical issues across Microsoft 365, enterprise messaging, identity, and infrastructure services.
Support identity and access management technologies, including Active Directory, Conditional Access, MFA, SSO, and Privileged Identity Management.
Improve operational efficiency and service reliability through PowerShell automation and AI-assisted engineering tools.
Contribute to security, compliance, and governance initiatives using technologies such as Microsoft Defender for Office 365 and Microsoft Purview.
Drive technical projects and collaborate with global engineering teams on scalable, secure, and resilient solutions.
Participate in an on-call rotation supporting business-critical collaboration and messaging services.
Lead production infrastructure, platform maintenance, and services, and design and implement highly scalable environments.
Collaborate with other organizational team leads to direct work and adapt solutions to their needs.
Design scalable solutions for changing environments, including configuration deployments, monitoring, and logging.
Lead deep-dive analysis of production support operations, identify issues, and provide necessary fixes.
Investigate errors, debug source code and performance bottlenecks, and help determine whether root-cause analysis is needed across teams.
Improve troubleshooting processes proactively.
Build complex enhancements, such as alert automation, and review proposed enhancements that resolve defects.
Work globally with cross-functional teams on service health, pre-production testing of releases, post-change validation, and automation to improve testing frameworks and methodology.
Identify and implement improvements to production infrastructure, platforms, and services.
Create user acceptance test plans using the standard template and participate in new-service operational readiness.
Drive the design, development, configuration, and deployment of enterprise supporting systems.
Build relationships with internal or external customers to implement large-scale solutions, business process architecture, and application system design and implementation.
Lead stakeholder meetings to gather requirements.
Identify solutions in application or server architecture and networking.
Develop architecture standards and practices aligned with business goals.
Drive the design, development, and enhancement of new and existing products and services from inception, advocating adherence to business feature requirements.
Lead code and architecture reviews of products and services.
Resolve complex performance and scalability issues related to products and services.
Identify and pursue opportunities to improve product and service health, scalability, and resiliency.
Participate in performance benchmarking.
Manage and coordinate moderately complex tasks, monitor timelines and deliverables, and ensure timely completion and adherence to requirements for a moderately sized project or initiative.
Delegate, monitor, and prioritize work across multiple projects, provide technical oversight, and adjust plans when resources or timelines change.
Collaborate across the organization to align expectations and achieve shared objectives, using knowledge of business leaders, stakeholders, and customers to ensure proposed solutions meet their needs.
Seek and consider diverse perspectives to support inclusive collaboration.
Identify and address moderately complex issues by analyzing information, escalating unresolved or critical issues with an assessment, and suggesting potential solutions.
Review, contribute to, and document problem-solving strategies.
Pursue learning opportunities, stay current with industry trends and best practices, and use feedback and training to improve skills.
Coach and mentor junior team members, supporting learning and knowledge sharing across teams.
Develop and recommend process improvements, collaborate on implementation, and evaluate their impact on stakeholders.
Seek feedback on proposed process improvements and alternative methods.
Participate in candidate interviews, assess candidates, and provide hiring recommendations.

Desired Qualifications

Familiarity with Microsoft Purview, Microsoft Defender for Office 365, Microsoft Intune, and AI-assisted automation tools such as ChatGPT or Codex.
Relevant Microsoft or Proofpoint certifications are advantageous but not mandatory.

Oracle Cloud Infrastructure (OCI) is looking for an experienced Microsoft 365 Engineer to join our Enterprise Collaboration Services team.

Our team is responsible for delivering secure, reliable, and scalable collaboration and messaging services that support Oracle’s global workforce of more than 150,000 users.

We manage business-critical enterprise technologies, including Microsoft 365, Exchange Online, SharePoint Online, OneDrive, Microsoft Entra ID, and Proofpoint, ensuring that employees around the world can communicate and collaborate effectively.

You’ll join a distributed engineering team working across multiple locations, including the UK and Czech Republic, and contribute to the continued improvement of Oracle’s enterprise collaboration infrastructure.

About the Role

We’re looking for a senior, hands-on engineer with strong expertise in Microsoft 365, enterprise messaging, and email security.

This role offers a combination of technical engineering projects, platform improvements, and operational support within a large-scale enterprise environment.

You’ll take ownership of complex technical initiatives, troubleshoot challenging production issues, and work closely with infrastructure, security, networking, and engineering teams to maintain and improve the reliability, performance, and security of our collaboration services.

We’re looking for someone who enjoys solving complex problems, works independently, and brings both technical depth and a proactive approach to engineering.

What You’ll Do

Administer, maintain, and optimize Microsoft 365 services, including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive for Business, Microsoft Entra ID, and Microsoft Purview.
Manage enterprise messaging infrastructure, including mail flow, routing, transport rules, and email security.
Administer and optimize Proofpoint email security solutions, ensuring secure and reliable messaging across the organization.
Implement and maintain email authentication and security technologies such as DMARC, SPF, and DKIM.
Troubleshoot complex technical issues across Microsoft 365, enterprise messaging, identity, and infrastructure services.
Support identity and access management technologies, including Active Directory, Conditional Access, MFA, SSO, and Privileged Identity Management.
Improve operational efficiency and service reliability through PowerShell automation and modern AI-assisted engineering tools.
Contribute to security, compliance, and governance initiatives using technologies such as Microsoft Defender for Office 365 and Microsoft Purview.
Independently drive technical projects and collaborate with global engineering teams on scalable, secure, and resilient solutions.
Participate in an on-call rotation supporting business-critical collaboration and messaging services.

What We’re Looking For

We’re looking for an experienced engineer who has worked with Microsoft 365 and enterprise messaging technologies in complex, large-scale environments.

Your background should include:

6+ years of hands-on experience administering Microsoft 365 in enterprise environments.
Strong expertise in Exchange Online, enterprise messaging architecture, mail flow, and troubleshooting.
Extensive hands-on experience administering Proofpoint in enterprise environments, ideally 6+ years.
Experience with email security and authentication technologies, including DMARC, SPF, and DKIM.
Strong knowledge of Microsoft Entra ID (Azure AD), Active Directory, and identity security technologies.
Experience supporting Microsoft Teams, SharePoint Online, and OneDrive for Business.
Practical experience with PowerShell and automating Microsoft 365 administrative processes.
Strong troubleshooting skills across Microsoft 365, messaging, security, and infrastructure environments.
Experience working with Windows Server and Linux systems.
The ability to independently own technical initiatives while collaborating effectively with distributed engineering teams.

Familiarity with Microsoft Purview, Microsoft Defender for Office 365, Microsoft Intune, and AI-assisted automation tools such as ChatGPT or Codex would be beneficial.

Relevant Microsoft or Proofpoint certifications are an advantage but are not mandatory.

Why Join Us?

Enterprise scale: Work on critical collaboration and messaging platforms supporting more than 150,000 users globally.
Technical ownership: Take responsibility for complex engineering projects and challenging technical problems.
Modern technologies: Work across Microsoft 365, enterprise messaging, email security, identity management, and automation.
Global collaboration: Partner with experienced engineers and technical teams across multiple locations.

••Continuous improvement: Help improve the reliability, security, and efficiency of Oracle’s enterprise collaboration environment.

Key Responsibilities
Production Infrastructure:
-Leads production infrastructure, platforms maintenance, and services which support the growing client base as well as designs and implements highly scalable environments.
-Collaborates closely with other team leads in the organization to direct work and provides and adapts solutions for their needs.
-Proactively designs new, scalable solutions for fast changing environment with advanced needs in various fields (e.g., configuration deployments, monitoring, and logging).
Troubleshooting, Testing, and Improvements - Drilldown Analysis/Troubleshooting:
-Leads deep drill down analysis into production support operations and identifies and provides necessary fixes.
-Investigates errors, debugs source code and performance bottlenecks, and helps determine if root cause analysis (RCA) are needed across teams.
-Proactively enhances troubleshooting processes.
Troubleshooting, Testing, and Improvements - Testing and Improvements:
-Builds complex enhancements (e.g., automating alerts) and reviews proposed enhancements that resolve defects.
-Globally works with cross functional teams to ensure service health with pre-production testing of new releases, post-change validation, and automation work to improve the testing framework and methodology.
-Identifies and implements changes and new ideas for the improvement of production infrastructure, platforms, and/or services.
-Leverages the standard template to create the user acceptance test plans and participates in use of new service operational readiness.
System Design and Architecture - System Design:
-Drives the design, development, configuration, and/or deployment of enterprise supporting systems.
-Builds working relationships with external or internal customers to implement large scale solutions, business process architecture, application system design, and implementation, impacting results within and beyond the team.
-Leads engagement in stakeholders meetings for requirements gathering.
System Design and Architecture - System Architecture:
-Takes proactive steps to identify solutions in experience of application or server architecture and networking.
-Drives the development of architecture standards and practices in alignment with business goals.
Product/Service Development:
-Drives the design, development, and enhancement of new and existing products and services from inception and design, advocating for adherence to business feature requirements.
-Leads code and architecture reviews of the products and services.
-Resolves complex performance and scalability issues related to products and services.
-Identifies and capitalizes on opportunities to improve health, scalability, and resiliency of products and services.
-Participates in performance benchmarking.

Core Responsibilities
Planning & Execution:
-Manages and coordinates moderately complex tasks, monitoring timelines and deliverables to ensure timely completion and adherence to requirements for a moderately-sized project or initiative. Efficiently delegates, monitors, and prioritizes work across multiple projects, providing technical oversight and adjusting plans to address shifts in resources or timelines.
Collaboration & Partnership:
-Collaborates across the organization to align on expectations and achieve shared objectives. Leverages understanding of business leaders, stakeholders, and/or customers to ensure proposed solutions meet their needs. Supports inclusivity by actively seeking and listening to diverse perspectives, ensuring others feel heard and respected.
Problem Solving:
-Identifies and addresses moderately complex issues by analyzing a wide range of data and/or information to identify solutions in accordance with standard practices. Proactively escalates unresolved or critical issues with a thorough assessment and suggests potential solutions. Reviews, contributes to, and documents problem solving strategies.
Continuous Learning:
-Pursues learning opportunities to expand knowledge and skills and/or tools in new areas and stays abreast of the latest industry trends and best practices. Proactively seeks and leverages ongoing feedback and training to improve skills. Coaches and mentors junior team members, fostering continuous learning and knowledge sharing within and across teams.
Continuous Improvement:
-Develops ideas, recommends updates, and/or collaborates on the implementation of process improvements to increase the efficiency and effectiveness of processes, protocols, and workflows across teams, and evaluates the impact on key stakeholders. Solicits feedback from others on ideas for alternative approaches and methods for continued improvement.
Performance and Development:
-Contributes to the talent development pipeline by participating in candidate interviews, assessing candidates, and providing hiring recommendations.

Requirements at a Glance

Experience Level: Senior

Benefits

401(k) Savings and Investment Plan with company match
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.
11 paid holidays
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.
Paid parental leave
Adoption assistance
Employee Stock Purchase Plan
Financial planning and group legal
Voluntary benefits including auto, homeowner and pet insurance

About the Company

Oracle

Builds databases, business apps and cloud services

Oracle builds databases, business applications, and cloud infrastructure for companies and public-sector organizations. Oracle Database stores and processes business data, while Oracle Cloud Infrastructure provides computing, storage, and networking for applications and AI workloads. Fusion Cloud Applications support finance, human resources, supply chains, and customer service, helping businesses manage everyday operations and reporting. Customers pay for cloud subscriptions and usage, software licenses, support, hardware, and consulting, with deployment options in Oracle's cloud or their own data centers. Oracle was founded in 1977 and is headquartered in Austin, Texas.

Company size: 10,001+
Company stage: IPO
Headquarters: Austin, TX
Founded: 1977

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