M365 Exchange Online Administrator
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Job Location:
Reston, VA - USA
Monthly Salary:
$ 126100 - 227950
Posted on:
22-10-2025
Vacancies:
1 Vacancy
Job Summary
Looking for an opportunity to make an impact
At Leidos we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers success. We empower our teams contribute to our communities and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers our people and our community. Our Mission Vision and Values guide the way we do business.
If this sounds like a mission you want to be a part of keep reading!
The Digital Modernization Sector is focused on delivering performance-based IT services and repeatable solutions to include applying cloud-factory and aaS (as a Service) capabilities and integrating commercial products to provide a comprehensive digital engineering approach to IT transformation. Our team is solving the worlds toughest security challenges for customers with cant fail missions. To explore and learn more click here!
Candidates MUST:
Be located in the United States for the current three consecutive years.
Be a US Citizen or US Person with the ability to obtain and maintain a Public Trust clearance.
This is a telework position; however the candidate must reside in the Washington D.C. Northern Virginia or Maryland area.
Leidos is seeking an experienced M365 Exchange Online Administrator (cloud) to join our Information Technology team. The ideal candidate will have deep expertise in managing and optimizing Exchange Online environments within GCC (Government Community Cloud) tenants focusing on governance security compliance and enhancing the organizations communication capabilities. This role requires a strategic thinker who can align Exchange Online services with organizational goals particularly in a federal agency context. Other skills and responsibilities include but are not limited to:
Key Responsibilities:
Strategic Oversight of Exchange Online Environment:
Lead the management and optimization of the Exchange Online environment to ensure reliable secure and efficient email communication across the organization.
Develop and enforce policies for email retention sensitivity labeling and classification to comply with federal regulations and organizational standards.
Oversee the implementation of email-related security measures including threat protection to safeguard against evolving cyber threats and ensure compliance with federal security standards.
Governance and Compliance Management:
Ensure the Exchange Online environment meets all federal compliance requirements particularly those related to GCC tenants including security retention and data governance policies such as capstone emails email labeling and email encryption.
Lead the integration of Microsoft Defender and Sentinel for comprehensive security monitoring and incident response ensuring policies and automated response actions are aligned with organizational and regulatory requirements.
Collaboration and Continuous Improvement:
Collaborate with cross-functional teams to align Exchange Online capabilities with organizational needs driving improvements in email management security and user productivity.
Stay current with updates and advancements in Exchange Online and related Microsoft 365 technologies proactively implementing enhancements to improve service delivery and support organizational objectives.
Utilize innovative tools and features such as Copilot to enhance the efficiency and effectiveness of email management practices within the organization.
Monitoring and Performance Optimization:
Oversee the monitoring of email flow usage patterns and service health to proactively identify issues and opportunities for optimization.
Ensure comprehensive documentation of system configurations policies procedures and service records to support auditing compliance and future planning.
Leadership and Mentorship:
Provide guidance and mentorship to junior IT staff fostering a culture of continuous learning and professional development within the team.
Act as a subject matter expert in Exchange Online administration particularly in a federal agency context to support strategic initiatives and organizational growth.
Required Qualifications and Experience:
Bachelors degree in computer science Information Technology or a related field with a minimum of 12 years of relevant experience.
Minimum of 5 years of hands-on experience in M365 administration.
Strong understanding of M365 security and compliance capabilities.
Excellent communication and collaboration skills.
Working experience with a federal agency is highly desired.
Required Certifications:
Possess one or more Microsoft 365 certifications. e.g. Microsoft 365 Certified: Messaging Administrator Associate Enterprise Administrator Expert Security Compliance and Identity Fundamentals.
Desired Skills:
Expertise in managing M365 B2B collaboration and establishing trust relationships among multiple federal agencies.
Experience with Multi-Tenant Organization (MTO).
Proficiency in managing guest user access and secure external sharing within Exchange Online ensuring secure and compliant communication.
Familiarity with Entra ID B2B settings and Conditional Access policies for secure collaboration across organizations.
Strong understanding of data governance and lifecycle management in a multi-tenant environment.
Experience with Agile development methodologies.
Proficiency with tools such as Jira Confluence and Zendesk.
Come join our rapidly growing team and enjoy these benefits:
Paid Time Off (PTO) accrued based on Leidos policy up to 3 weeks a year.
Eleven (11) paid holidays per year.
Access to benefits on day one including medical and dental insurance 401K Life AD&D Voluntary Disability plans.
Ongoing training to support your success.
Discounted Leidos stock purchase and other Employee Discounts.
At Leidos we dont want someone who fits the moldwe want someone who melts it down and builds something better. This is a role for the restless the over-caffeinated the ones who ask whats next before the dust settles on whats now.
If youre already scheming step 20 while everyone else is still debating step 2 good. Youll fit right in.
Original Posting:
July 31 2025For U.S. Positions: While subject to change based on business needs Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $126100.00 - $227950.00The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.
Required Experience:
Unclear Seniority
Key Skills
- Business
- Marketing
- User Interface
- Web Content
- A/B
- Communication
- CRM
- Paid Search
- HTML
- Project Management
- Content Marketing
- Email Campaigns
- ROI
- Digital strategy
- Analytics
About Company
Leidos is an innovation company rapidly addressing the world's most vexing challenges in national security and health. Our 47,000 employees collaborate to create smarter technology solutions for customers in these critical markets.
