Senior Microsoft Defender Cloud Security Engineer

UltraViolet Cyber; Arlington (VA); Remote; USD 110,000 - 115,000; Full time

Job summary

UltraViolet Cyber is seeking a Senior Microsoft Cloud Security Engineer to secure and optimize our Microsoft cloud environment, including Azure and Office 365. You will lead CA policy development, Defender optimization, and Purview implementations in large enterprise settings.

You will design and tune KQL queries for Sentinel and Defender, perform risk reviews, and guide cross-functional teams on governance and security controls.

Qualifications

• Ability to Obtain DHS EOD Public Trust Clearance.
• Master’s Degree + 10 years’ experience OR Bachelor’s degree + 13 years OR 19 years total experience.
• Expert-level hands-on experience deploying, managing, and securing Azure, Entra, Defender, Purview, Office 365, and Microsoft 365 in large enterprises.
• Deep understanding of Conditional Access Policies (CAPs), Azure AD/Entra, and Zero Trust principles.
• Proven Track record implementing and managing the full suite of the Microsoft Defender ecosystem and Microsoft Purview (DLP, sensitivity labels, eDiscovery)
• Advanced proficiency writing KQL for detection, investigation, response, and reporting
• Active, expert-level certification such as Microsoft Certified Solutions Expert (MSCE), Microsoft 365 Admin Expert, Microsoft Cybersecurity Architect Expert, AZ-900, AZ-500, SC-900, SC-100, SC-200, SC-300, SC-400, SC-401
• Cybersecurity certifications: Security+
• Strong networking, firewall, VPN, and segmentation knowledge as it relates to cloud deployments
• Exceptional time management, written and communication skills.
• Participate in rotating on-call schedule across the team, to provide incident response or support during outages.

Responsibilities

• Serve as SME for securing the Microsoft cloud tenant, advising on architecture, design, and implementation of secure solutions across Azure, O365, and M365.
• Lead the development and enforcement of Conditional Access Policies, aligned with best practices for managing access control for personas, groups, and applications.
• Act as the primary SME in optimizing the Microsoft Defender suite of components (Defender for Endpoint, Defender for Cloud, Defender for Identity, and Defender for Office 365)
• Implement Microsoft Purview, including data classification and sensitivity labels, Data Loss Prevent (DLP), and eDiscovery workflows.
• Design, run and optimize Kusto Query Language (KQL) queries for Azure Sentinel, Defender, and log analytics.
• Review and remediate security controls through vulnerability assessments, penetration tests, and red/blue team engagements.
• Guide cross-functional teams on security controls, compliance requirements, policy, and governance best practices

Skills

Azure Security

Zero Trust

KQL

Office 365/M365 security

Conditional Access

Defender suite

Threat intelligence

Incident response

Education

Master’s Degree or higher

Bachelor’s degree + 13+ years

Tools

Microsoft Defender

Microsoft Purview

Azure Sentinel

Azure AD/Entra

Job description

UltraViolet Cyber is seeking a Senior Microsoft Cloud Security Engineer to secure and optimize our Microsoft cloud environment, including Azure and Office 365. You will lead CA policy development, Defender optimization, and Purview implementations in large enterprise settings.

You will design and tune KQL queries for Sentinel and Defender, perform risk reviews, and guide cross-functional teams on governance and security controls.