Senior Exchange Administrator
Quantico, VA
Category: IT Admin
Industry: Technology
Reference ID: JN -082026-108174
Date Posted: 08/04/2026
Shortcut: http://careers.eliassen.com/ha4oSw
Description:
On-site in Quantico, VA
Our client seeks a Senior Exchange Administrator to support a large-scale hybrid Microsoft Exchange 2019 and Microsoft 365 environment serving over 260,000 users across classified and unclassified networks. The role will administer, maintain, monitor, and optimize enterprise messaging and directory services in a highly available environment and provide Tier III support while driving security hardening, documentation, and operational excellence.
Due to federal security clearance requirements, applicant must be a United States Citizen with an active Top Secret clearance. This is a contract to hire opportunity. Applicants must be willing and able to work on a w2 basis and convert to FTE following contract duration. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $65.00 to $75.00/hr. w2
Responsibilities:
- Administer and support Exchange 2019 and Microsoft 365 messaging environments.
- Provide Tier III support for messaging-related incidents and service requests.
- Monitor system health, performance, and availability using enterprise monitoring tools.
- Support Active Directory and messaging directory synchronization technologies.
- Implement proactive monitoring, event remediation, and performance optimization.
- Perform security hardening and DISA STIG remediation activities.
- Support disaster recovery planning, documentation, and testing.
- Create and maintain SOPs, work instructions, system diagrams, and technical documentation.
- Provide guidance and support to Tier I and Tier II service desk teams.
- Assist with integrating new technologies and optimizing existing messaging solutions.
Experience Requirements:
- 7+ years of experience supporting Microsoft Exchange and Microsoft 365 environments.
- Hands-on experience with Exchange 2019.
- Experience supporting hybrid Exchange/O365 environments.
- Active Directory and directory services experience.
- Microsoft certification such as MCSE or MCITP (Exchange or Active Directory).
- DoD 8570 IAT Level III certification (CISSP, CASP+, CCSP, GCED, GCIH, etc.).
- Active Top Secret clearance with SCI eligibility.
- Preferred: Microsoft Exchange 2019, Microsoft 365 / O365, Active Directory (AD), ADLDS, Unity Sync, Forefront Identity Manager (FIM), Intune, VMware, NetApp, DISA STIG compliance, HBSS, enterprise messaging infrastructure support.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above