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Senior O365 Engineer

Job in Leesburg, Loudoun County, Virginia, 22075, USA
Listing for: Loudoun County Government
Full Time position
Listed on 2026-05-24
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below

The Department of Information Technology is currently seeking a highly skilled Senior O365 Engineer in the Infrastructure Division to join our team. This position will manage the County's O365 environment, providing the highest level of customer service, especially with advanced user administration providing Tier 3 support. We are looking for an individual who has experience with cloud deployments and has excellent customer service.

Job Responsibilities or Illustrative Job Tasks
  • Provide O365 administration, Exchange administration, Quest Archive Manager administration, AD administration and mail flow troubleshooting.
  • Provide Tier 3 messaging support, FOIA and legal searches using MS Purview, general user administration for email and Teams.
  • Coordinate assistance and guidance to customers in the timeframe and manner defined by the supervisor or mutually agreed to with the customer. Satisfy customer requirements and identify solutions to customer related issues.
  • Provide Technical support to Network Engineers, Systems Engineers and other staff as needed.
  • Provide technical training as requested by management.
  • Monitor systems and respond to issues proactively.
  • Provide after‑hours support as required.
We are seeking an individual with
  • Advanced knowledge of O365, Outlook/Exchange configuration and administration, e‑discovery, MS Teams policies, MS license administration, and Quest Archive Manager.
  • General knowledge of installation, configuration, and troubleshooting systems to include Active Directory, Domain Controllers, component services, such as but not limited to; file/print, DNS, DHCP, FTP, and IIS, Internet communication protocols, Windows/Linux/VMware infrastructure, server administration and software tools.
  • Ability to communicate ideas and plans clearly both orally and in writing to technical and non‑technical staff.
  • Strong interpersonal skills, ability to work with senior leadership and a collaborator that assists with solving business problems.

Bachelor’s degree with coursework in Computer Science or related field; four (4) years of related technical work experience preferably in a government setting; or equivalent combination of education and experience.

Preferred Qualifications
  • Preference is given to those with certifications including: O365, Windows Server, AWS, and/or Azure certifications.

The successful candidate will undergo a CJIS/Fingerprint background check.

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Position Requirements
10+ Years work experience
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