MS365 Engineer Senior

Role Description

MS365 Engineer Senior provides senior engineering and operational support for Microsoft 365 services under the SEC ISS contract, enabling secure and resilient collaboration across the SEC enterprise. This role designs, implements, and administers Microsoft 365 GCC (G5) capabilities including Exchange Online, SharePoint Online, Teams, and Microsoft Entra ID to support SEC OIT modernization goals. The position leads automation and migration efforts, improves platform performance, and enforces zero-trust-aligned security and compliance controls. The engineer partners with infrastructure, cybersecurity, and service delivery teams to resolve complex issues and sustain SLA-based service outcomes in alignment with PWS 3.5.8 for Microsoft 365 GCC services and PWS 4.2.2 for service-level performance outcomes.

Qualifications

• This position is restricted to U.S. citizens only. Applicants must not hold dual citizenship with any other country to be eligible for work under this contract.
• Ability to obtain and maintain SEC Public Trust.
• Bachelors in Information Technology, Computer Science, Engineering, or a related field and 4+ years of experience in Microsoft 365 administration and engineering roles.
• In lieu of degree, additional years experience required.
• Strong expertise in Microsoft 365 services, PowerShell scripting, and Microsoft Entra ID (Azure AD) identity management.
• Experience delivering security, compliance, and migration initiatives in large-scale enterprise environments.

Requirements

• Microsoft 365 services administration and engineering (Exchange Online, SharePoint Online, Teams).
• Microsoft Entra ID (Azure AD) identity and access management.
• PowerShell scripting and automation for platform administration and operations.
• Security and compliance implementation for Microsoft 365 in enterprise environments.
• Migration planning, execution, and advanced troubleshooting for Microsoft 365 workloads.

Benefits

• Experience supporting federal civilian agency environments with strict security and audit requirements.
• Experience implementing and supporting Microsoft 365 Copilot and Copilot Studio capabilities.
• Expertise in Microsoft Purview eDiscovery, DLP, and records/information protection governance.
• Experience integrating Microsoft 365 operations with ITSM workflows and SLA reporting dashboards.
• Current advanced Microsoft cloud certifications relevant to Microsoft 365 and identity/security administration.
• Microsoft 365 Certified: Enterprise Administrator Expert.
• Microsoft Certified: Identity and Access Administrator Associate (SC-300).
• Microsoft Certified: Security Administrator Associate (MS-500).

Company Description

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting: April 21, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.