Senior Exchange System Administrator
About The Position
Leidos is seeking a Senior Exchange Administrator to support a large enterprise IT contract for the Department of Defense. The role administers on-premises Microsoft Exchange and Microsoft 365 Exchange Online in hybrid environments, across physical and virtual server technologies and multiple enclaves, classifications, and mission requirements. Supported solutions include Microsoft Exchange 2019, Exchange 2025 SE, Exchange Online, and hybrid configurations. The administrator provides Tier 2 operations and maintenance, upgrade planning and implementation, requirements and technical analysis, integration and testing, security-compliance support, and production quality assurance. The position also supports documentation for Risk Management Framework Authority to Operate and extension requests, and contributes to availability, capacity, disaster recovery, and process-improvement efforts. Work is performed in a team environment supporting a 24/7/365 mission; after-hours on-call support may be required. Duties may include remotely configuring, rebooting, and performing remedial actions on servers.
Requirements
- Experience interacting with service lanes to handle service inquiries and problems.
- Extensive experience working as a Tier 2 System Administrator.
- Extensive experience with Microsoft Exchange 2019, Exchange 2025 SE, and Microsoft 365 Exchange Online.
- Extensive knowledge of email journaling solutions.
- Extensive experience with Exchange PowerShell or other scripting and automation languages.
- Experience resolving highly complex problems using technical knowledge, factual reasoning, and interpretation of problem indicators.
- Experience developing and implementing solutions for upgrades to newer Exchange versions.
- Experience directing migrations between on-premises Exchange and Microsoft 365 Exchange Online.
- Time-management skills and ability to work independently within an IT service management or ticketing system such as ServiceNow.
- Strong oral and written communication skills, including explaining complex issues to nontechnical leadership and documenting root causes and restoration actions.
- Mentoring skills to guide and improve team skill composition.
- Ability to work effectively within a team and support peers in improving processes and results.
- Ability to triage and classify incidents and prioritize work accordingly.
- Experience planning, deploying, and documenting patch and configuration updates.
- Knowledge of disaster recovery and high availability for a large environment.
- Experience with log reviews, incident analysis, and identification of issue trends.
- Experience with server patch-management methodologies using SCCM.
- At minimum, meet DoDM 8140.03 (previously DoD 8570) IT System Administrator Intermediate certification requirements, such as Cloud+, GICSP, SSCP, Security+ CE, GSEC, or higher.
- Bachelor’s degree and 12 years of relevant experience, master’s degree and 8 years, associate’s degree and 14 years, or high school diploma and 16 years.
- TS/SCI with polygraph, or TS/SCI and willingness to obtain and maintain a polygraph.
Nice To Haves
- Certification relating to Microsoft Exchange, Microsoft 365, MCSE, MCSA, or another relevant certification.
- Experience troubleshooting within a McAfee/Trellix security environment.
Responsibilities
- Provide Tier 2 operations and maintenance support for implementation, troubleshooting, maintenance, and monitoring of physical and virtual servers.
- Distinguish isolated user problems from enterprise-wide application and system issues; identify root causes, recommend fixes, and document resolutions.
- Collaborate with peers and other service lanes to analyze network latency and address slow connections and user-experience issues.
- Collect and analyze data, develop and implement solutions, and follow Problem Management guidelines.
- Establish and maintain availability and capacity management solutions using lessons learned and business practices.
- Prepare follow-up reports covering technical findings, feedback, resolution steps, root-cause analysis, operational assessment, and process improvement.
- Support customer requirements in a 24/7/365 mission environment and provide on-call support during after-hours outages.
- Update operations and monitoring documentation for 24/7/365 IT Operations Center watch personnel.
- Troubleshoot email routing devices and security services, including McAfee/Trellix, Proofpoint, and Edge devices.
- Oversee the Exchange Online system in an Office 365/Microsoft 365 hybrid cloud environment.
- Manage roles, services, and permissions according to Government Service Owner and Cyber Security mandates.
- Create, test, and implement PowerShell scripts to automate and standardize routine tasks and monitoring.
- Conduct data-spill cleanups as directed by Cyber Security to mitigate the spread of misclassified emails and attachments.
- Conduct Freedom of Information Act searches across broad categories and large user subsets using PowerShell and Microsoft-provided tools.
- Plan hardware and software upgrades, review implementation and upgrade guides, and update documentation supporting RMF ATO and extension requests.
- Perform requirements, functional, and technical analysis; coordinate with engineering and operations staff to meet upgrade timelines.
- Conduct technical assessments, integration support, system testing for functionality and security compliance, and quality assurance of production implementations.
- Perform technical software configuration, server rebooting, and other remedial actions as needed.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
