Senior Microsoft Security Administrator

ACCELERA SOLUTIONS INC•Mc Lean, VA

1d•Remote

About The Position

We’re searching for a Microsoft Security Administrator to join our dynamic team and ensure the smooth, day-to-day operation of our Microsoft Defender services for our Department of Defense (DoD) customer. If you’re committed to maintaining high security standards and eager to contribute to a critical mission, this could be the perfect opportunity for you!

Requirements

A bachelor’s degree in computer science, Information Security, or a related field.
3+ Years of relevant experience
Experience with Microsoft Defender for Endpoint and Microsoft Defender for Cloud, including Defender for Servers.
Familiarity with endpoint security, threat hunting, and incident response.
Familiarity with SIEM solutions, especially Microsoft Sentinel.
Excellent attention to detail and problem-solving skills.
Good communication and collaboration skills to interact effectively with stakeholders at all levels.
Required DoD 8140 compliant certification such as CompTIA Security+
Active DoD Secret Clearance

Nice To Haves

Understanding of industry compliance standards (e.g., NIST SP 800-53) and relevant regulations (e.g., RMF, DISA STIGs, DoDI 8500.01/8510.01, CMMC/NIST 800-171) is advantageous.
Willingness to stay updated with the latest cybersecurity trends and emerging security tools.
Experience with ServiceNow or other ticketing system
Experience administering and working with Windows and Linux operating systems
Microsoft Active Directory/Entra
Microsoft PowerBI Dashboarding
Advanced PowerShell scripting or prior software development experience
DoD PKI

Responsibilities

Continuously monitoring Defender health, alerts, onboarding status, sensor health, policy enforcement, and security configuration.
Ensure NGAV solutions are running optimally and address any alerts or issues.
Perform routine checks and updates to maintain peak performance.
Ensure rules and controls are in place to minimize the attack surface of endpoints, as provided by the SOC.
Report any deviations or issues to the engineering team for review.
Verify that real-time updates and threat intelligence from the Microsoft cloud are being received and applied.
Report any discrepancies or issues to the engineering team.
Ensure seamless integration of Microsoft Defender with Microsoft Sentinel and other SIEM tools.
Monitor and maintain centralized logging, analytics, and reporting dashboards.
Perform data analysis via the SIEM tool as required.
Verify comprehensive security across Windows, Linux, and mobile devices.
Report any platform-specific issues to the engineering team.
Generate and review detailed reports on security posture, incidents, and compliance.
Ensure dashboards and alerts are functioning correctly and report any issues.
Follow established procedures and guidelines for maintaining Microsoft Defender solutions.
Escalate any issues or anomalies to the engineering team.
Ensure WDAC policies are correctly applied and functioning as intended.
Report any policy violations or issues to the engineering team.
Ensure DLP policies are correctly implemented and functioning across endpoints, mobile devices, and cloud services.
Implement approved DLP waivers for authorized users and devices.
Monitor DLP incidents and report any policy violations or data exfiltration attempts to the engineering team.
Maintain unified reporting and alerts for any DLP-related issues.