Senior Systems Engineer

All Capital Solutions, Inc. • Fort Meade, MD

42d

About The Position

The Senior Systems Engineer (Level 3) serves as a principal technical leader and subject matter expert within the National Security Agency’s Enterprise Endpoint Detection and Response (EDR) Program. Operating in a highly classified, multi-domain infrastructure, the successful candidate will drive the strategic architectural design, end-to-end integration, deployment, and optimization of premier endpoint security platforms, specifically Microsoft Defender for Endpoint (MDE) and Trellix HX. This critical role bridges high-level systems architecture with operational defense capabilities, ensuring total endpoint visibility, robust threat containment, and resilient configuration management across all enterprise and mission-critical assets to defend national security infrastructure against sophisticated cyber threats.

Requirements

• Expertise in Microsoft Defender for Endpoint (MDE).
• Expertise in Trellix HX.
• Experience with hybrid environments (on-premises, cloud, VDI).
• Ability to author complex system engineering and implementation plans.
• Skill in tuning agent configurations and exclusion policies.
• Experience monitoring endpoint health at scale.
• Proficiency in Kusto Query Language (KQL).
• Proficiency in YARA rules.
• Experience providing technical advice to stakeholders.
• Experience providing advanced forensic support.
• Mentoring experience.

Responsibilities

• Leading the lifecycle engineering and scale-out architecture of MDE and Trellix HX across hybrid environments, including on-premises, cloud, and virtual desktop infrastructures (VDI).
• Authoring complex system engineering and implementation plans.
• Tuning agent configurations and exclusion policies to eliminate mission friction.
• Monitoring overall endpoint health at scale.
• Collaborating closely with threat hunting and intelligence analysts to translate actionable threat intelligence into custom technical indicators of compromise (IOCs), utilizing Kusto Query Language (KQL) and YARA rules.
• Acting as a primary technical advisor to Government stakeholders on system risks and engineering considerations.
• Providing advanced forensic support to the SOC during critical high-priority incidents.
• Actively mentoring junior and mid-level engineering personnel within the program.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed