Senior Security Engineer

Ardent

. Administer and maintain Microsoft Sentinel, including configuration, performance tuning, and platform optimization.

Posted 4/21/2026full-timeWashington, D.C. • District of Columbia, Washington • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

Administer and maintain Microsoft Sentinel, including configuration, performance tuning, and platform optimization.
Develop, tune, and maintain detection rules and analytics to improve threat detection capabilities.
Write and optimize KQL queries for threat detection, investigation, and reporting.
Validate log ingestion and ensure completeness and accuracy of data sources.
Support onboarding and normalization of log sources across enterprise systems.
Coordinate vulnerability prioritization and support patch governance efforts.
Serve as a technical liaison with stakeholders to align security operations with mission needs.
Support incident response efforts through engineering support and tool optimization.
Document engineering processes, detection logic, and system configurations.
Collaborate with SOC analysts and detection engineers to improve detection coverage and response efficiency.

Requirements

What you’ll need

Must be a U.S. Citizen.
Bachelor’s degree in Cybersecurity, Information Technology, or a related field (or equivalent experience).
4+ years of experience in cybersecurity engineering or security operations.
2+ years of experience supporting SIEM platforms, preferably Microsoft Sentinel.
Experience developing detection logic and performing threat detection engineering.
Proficiency in KQL or similar query languages.
Experience with log ingestion, data normalization, and security telemetry.
Experience supporting vulnerability management and patching processes.
Strong analytical and problem-solving skills.
Ability to communicate technical concepts to diverse audiences.

Benefits

Comp & perks

Highly competitive benefits
Professional development opportunities
Exceptional culture that embraces flexibility, innovation, collaboration, and career growth

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Microsoft SentinelKQLthreat detectiondetection ruleslog ingestiondata normalizationsecurity telemetryvulnerability managementpatch governanceincident response

Soft Skills

analytical skillsproblem-solving skillscommunication skills

Certifications

Bachelor’s degree in CybersecurityBachelor’s degree in Information Technology