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Posted August 23, 2026

Senior Exchange Administrator

Eliassen Group
Quantico, VA, US Full Time

Job Description

Job Description
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.
Recruitment Transparency Notice
Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ([email protected], 781-808-2924) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

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 [email protected].

About Eliassen Group:
Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.
Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.
Don’t miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!

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