Senior Microsoft 365 & Active Directory Engineer

Job Description:

DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector organizations — helping them harness AI to drive outcomes at a time of exponential change with speed. With deep expertise in Managed Infrastructure Services, Application Modernization, and Industry-Specific Software Solutions, DXC modernizes, secures, and operates some of the world’s most complex technology estates. Learn more on dxc.com 

DXC Vietnam has been recognized as one of the "Best Companies to Work for in Asia 2025" by HR Asia Magazine, highlighting its exceptional HR practices and 31-year legacy in the country. The company also earned the special "Most Caring Company Award" in 2025 for prioritizing employee well-being and fostering a supportive, inclusive workplace culture. 

Hanoi, Vietnam | Full-time

We are looking for a Senior Microsoft 365 & Active Directory Engineer to take technical ownership of a Microsoft 365 tenant and identity environment in Hanoi.

The environment is built according to strict enterprise security standards by a specialist implementation partner.

You will be the lead technical point of contact on the DXC side, supporting, maintaining, and enhancing the configured environment, resolving complex identity and security issues, and ensuring that operational knowledge is retained within the team.

You will work closely with project stakeholders, international colleagues, and the implementation partner. You will also provide technical guidance to another engineer on the team.

Key Responsibilities

• Own the day-to-day technical support and maintenance of the Microsoft 365 tenant and Microsoft Entra ID / Active Directory environment.
• Administer and troubleshoot identity and access configurations, including user and group provisioning, role-based access control, administrative role segregation, and privileged account protection.
• Maintain and troubleshoot authentication and access controls, including multi-factor authentication, Conditional Access policies, location and country-based access restrictions, session controls, and device compliance-based access.
• Support Exchange Online operations, including mailboxes, mail flow and domain settings, internal and external email policies, shared mailboxes, retention, and email security.
• Support Microsoft Defender and baseline security configurations, including email protection, Safe Links, Safe Attachments, endpoint policies, alerting, and incident response.
• Support access policies aligned with the enterprise network segmentation model, including location-based access, download restrictions, and browser and file transfer controls.
• Maintain audit logging and monitoring configurations and produce audit and investigation exports to support internal and regulatory reviews.
• Execute onboarding and offboarding technical procedures, including account deactivation, mailbox retention, content ownership transfers, and session termination.
• Perform recovery procedures for emails, files, document versions, and deleted accounts.
• Participate in testing, stabilization, knowledge transfer, and administrator handover with the implementation partner.
• Maintain technical documentation and configuration records.
• Provide technical guidance to another engineer on the team.

Requirements

• 8+ years of IT experience, with at least 3 years of hands-on experience in Microsoft 365 administration and Active Directory / Microsoft Entra ID configuration.
• Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field.
• Strong hands-on experience with Microsoft 365 tenant configuration across core workloads.
• Solid experience configuring identity and access, including users, groups, roles, authentication, and access policies.
• Practical experience configuring and troubleshooting multi-factor authentication and Conditional Access policies.
• Working experience with Exchange Online administration, mail flow, and email security settings.
• Strong independent troubleshooting skills, with the discipline to clearly document configurations.
• Good written and spoken English, sufficient for daily collaboration with international colleagues and technology partners.

Nice to have

• Experience with Microsoft Intune device management and Microsoft Defender for Office 365 / Endpoint.
• Exposure to Microsoft Purview, including sensitivity labels, data loss prevention, retention, or eDiscovery.
• Microsoft certifications such as MS-102, Microsoft 365 Administrator, or SC-300, Identity and Access Administrator.
• Experience working in a large enterprise or regulated industry.
• Experience supporting an environment implemented by a third-party partner.

Employee Benefits and Perks 

At DXC Vietnam, we follow a people‑first philosophy, offering competitive compensation and comprehensive benefits that support your professional growth and personal well‑being. 

• Attractive and competitive salary package 

• Full salary‑based contributions to Social Insurance, Health Insurance, and Unemployment Insurance in accordance with Vietnamese law 

• 13th‑month salary (guaranteed) 

• Generous leave policy: 12 annual leave days, 6 personal leave days, 1 volunteer leave day, plus sick leave, maternity/paternity leave, and childcare leave. 

• Premium Healthcare Insurance (1+1) for employees and dependents 

• Employee Assistance Program (EAP) with confidential 1:1 consultation for physical and mental well‑being to support you and your family 

• Access to the Well‑being Hub covering health, mental wellness, and financial planning 

• Extensive resources to support your onboarding and continual development including DXC University and sponsorship for professional certification exams. 

• DXC Recognition, our global virtual platform that fosters a culture of appreciation and celebration with real-time reward and recognition  

• Opportunities to work on global projects, collaborate with international teams, and explore overseas assignments or relocation 

• Special allowances and gifts (English/Japanese language allowance, wedding gifts, newborn gifts, etc.) 

• Annual team activities and company events 

• A collaborative, inclusive, and international working environment that promotes knowledge sharing and continuous growth 

How to Apply & Our Commitment to You 

If you would like to be part of a culture that drives innovation, delivers results, rewards performance, and encourages ideas, please click “Apply Now” to submit your resume. 

In return, we are committed to providing a hiring experience that is transparent, fair, and engaging. Interviews and onboarding are conducted online as part of DXC’s virtual‑first approach to work. 

Equal Opportunity Employer 

DXC Technology is proud to be an Equal Opportunity Employer. We welcome applicants from all backgrounds and celebrate diversity as a source of strength. We believe in bringing your whole self to work, and our company grows only when our people grow. 

Reasonable accommodation for qualified candidates may be made in accordance with the DXC Accommodation Policy, including support for individuals with physical and mental disabilities. 

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.