Senior Microsoft 365 Administration Specialist

Job Description:

About DXC

DXC helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability across public, private, and hybrid clouds. Our 125,000+ people in 70+ countries deliver transformative technologies to ensure success, safety, and well-being for businesses worldwide. Learn more about how we deliver excellence for our customers and colleagues at dxc.com.

About the Role

We are looking for a qualified, proactive Senior Support Analyst – Office 365 with strong technical expertise to join our IT team. In this role, you will act as a senior technical specialist, responsible for resolving complex demands, ensuring the stability of environments, and supporting critical business operations through Microsoft Office 365 / Microsoft 365 services.

As a senior member of the support organization, you will handle escalations from Level 1 and Level 2 teams, perform root cause analysis, and implement lasting solutions to prevent recurring incidents. You will monitor the performance, availability, and security of Office 365 environments, maintain platform configurations and best practices, and collaborate with cross-functional teams and stakeholders to continuously improve service delivery.

This position requires strong analytical skills, systemic thinking, and the ability to solve complex problems independently while supporting incident, problem, and change management processes aligned with ITIL best practices.

Essential Job Functions:

Provide advanced (Level 3 ) support for Office 365 services, including Microsoft Teams, Exchange Online, SharePoint Online, and OneDrive for Business

Diagnose and resolve complex technical incidents escalated from Level 1 and Level 2 Support teams

Perform root cause analysis (RCA) and implement definitive solutions to prevent incident recurrence

Monitor the performance, availability, and security of Office 365 environments

Manage and maintain configurations, policies, integrations, and platform best practices

Collaborate with cross-functional teams and stakeholders on continuous improvement of service delivery

Support incident, problem, and change management processes in accordance with ITIL best practices

Create, maintain, and update technical documentation, operating procedures, and knowledge base articles

Basic Qualifications:

Proven experience in senior support roles within Office 365 / Microsoft 365 environments

Strong specialization in Microsoft Teams (administration, voice, policies, and governance)

Strong specialization in Exchange Online (mail flow, security, hybrid environments)

Strong specialization in SharePoint Online (site management, permissions, and governance)

Strong specialization in OneDrive for Business (synchronization, sharing, and data management)

Solid knowledge of Azure Active Directory (Entra ID), identity, and access management

Experience with PowerShell for automation, administration, and troubleshooting

Knowledge of Microsoft 365 security and compliance features

Strong analytical skills, systemic vision, and ability to solve complex problems

Excellent diagnostic and problem-solving ability

Clear, objective, and effective communication with technical and business stakeholders

Ability to act independently and handle high-priority incidents

Organized, detail-oriented approach with a focus on quality and continuous improvement

Collaborative attitude and sense of technical responsibility

Fluent English

Intermediate Spanish

Other Qualifications:

Microsoft certifications (e.g., Microsoft 365 Certified: Enterprise Administrator Expert)

Experience with hybrid environments and migration projects

Familiarity with ITIL processes and best practices

Why DXC? / Life at DXC

DXC fosters a culture of inclusion, learning, and corporate responsibility. We offer competitive benefits, including health, dental, vision coverage, wellness programs, retirement savings plans, paid holidays, and more. Learn about our values and ethics at https://dxc.com/us/en/about-us/corporate-responsibility.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here .