The Senior Security Manager for CMS Endpoints & M365 is a critical role within the security operations team at Leidos, focusing on safeguarding desktops, mobile devices, and cloud productivity services in hybrid enterprise environments. This manager will lead end-to-end security management, develop compliance standards, and oversee secure deployment of Microsoft 365 services while ensuring alignment with CMS, HHS, FISMA, and NIST requirements. Key responsibilities include managing endpoint security operations, M365 governance, infrastructure modernization, and incident response, requiring expertise in Windows, VDI ecosystems, and endpoint-security tools. The ideal candidate will have extensive experience in enterprise endpoints and secure infrastructure management, along with strong leadership skills to work collaboratively across multidisciplinary teams within a large federal organization.
Skills
Microsoft 365
Windows
VDI
Exchange Online
SharePoint Online
OneDrive
Teams
MFA
DLP
NIST
FISMA
CI/CD
Git
Azure
AWS
Kubernetes
Terraform
Python
PostgreSQL
Prometheus
Grafana
What you'll do
Lead end-to-end security management for CMS endpoints and enforce compliance standards.
Oversee security governance for Microsoft 365 services including threat detection and data governance.
Modernize and secure deployment initiatives across CMS environments, ensuring compliance and integrity.
Establish operational frameworks that enhance the security posture of CMS endpoint and M365 systems.
Manage secure configuration repositories and change management processes for endpoint and M365 systems.
Provide Tier III escalation support for endpoint and M365 incidents, coordinating forensic reviews and remediation.
What we're looking for
Extensive experience managing enterprise endpoints and secure infrastructure
Strong knowledge of Windows, VDI/thin client ecosystems, and endpoint security tools
Demonstrated expertise in configuration management, security compliance, and process development
Proven ability to lead technical teams within a large federal organization
Bachelor’s degree in Information Technology or related field
Oversee security governance for Microsoft 365 environments and services
Manage secure deployment, configuration, and lifecycle maintenance of M365 environment
Market check
Salary context
This
$131,300–$237,350
range sits above
60%
of similar postings on FindRole.
Peer median band
$130,000–$218,750
Median floor and ceiling across peers.
Typical midpoint (25–75%)
$142,487–$209,550
Middle half of comparable postings.
Based on 240 comparable postings.*
* 240 is the maximum number of comparable postings sampled.
Employer
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.
Leidos currently has
199 open roles
on FindRole.
Listed pay typically runs
$107,900–$195,050
across 187 roles with salary data.