Senior Exchange Admin - Hybrid Cloud & Security

Leidos; Alexandria (VA); On-site; USD 116,000 - 210,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos is seeking a Senior Exchange Administrator to support a large enterprise IT contract for the DoD. The role covers Microsoft Exchange on-prem, Exchange 2025 SE, and M365 Exchange Online in a hybrid environment.

You will lead planning, testing, and documentation for upgrades, RMF ATO compliance, and ongoing operations across multiple enclaves. You will collaborate with engineering and operations teams to implement patches, manage scripts, and ensure availability.

Qualifications

• Experience as a Tier 2 System Administrator.
• Experience with Microsoft Exchange 2019, 2025 SE, and M365 Exchange Online.
• Experience with Email Journaling solutions.
• Experience with Exchange PowerShell scripting or other scripting languages.
• Experience upgrading and migrating between on-prem Exchange and M365 Exchange Online.
• Strong communication and mentoring abilities.
• Experience with ServiceNow and ITSM processes.

Responsibilities

• Provide Tier 2 O&M support for physical and virtual servers.
• Perform hardware/software upgrades planning and documentation.
• Analyze incidents and perform root cause analysis with documented resolutions.
• Manage Exchange Online within a hybrid Office 365 environment.
• Create and test PowerShell scripts to automate tasks.
• Support 24/7 operations and on-call outages.

Skills

Tier 2 support

PowerShell scripting

Exchange administration

Problem solving

Team mentoring

Education

Bachelor's degree

Master’s degree

Associate's degree

High School Diploma

Tools

Microsoft Exchange 2019

Microsoft Exchange 2025 SE

M365 Exchange Online

Email Journaling solutions

SCCM

ServiceNow

Job description

Leidos is seeking a Senior Exchange Administrator to support a large enterprise IT contract for the DoD. The role covers Microsoft Exchange on-prem, Exchange 2025 SE, and M365 Exchange Online in a hybrid environment.

You will lead planning, testing, and documentation for upgrades, RMF ATO compliance, and ongoing operations across multiple enclaves. You will collaborate with engineering and operations teams to implement patches, manage scripts, and ensure availability.