Senior Systems Engineer

All Capital Solutions, Inc.; Fort Meade (MD); On-site; USD 140,000 - 190,000; Full time

Job summary

All Capital Solutions, Inc. seeks a Senior Systems Engineer (Level 3) to lead the Enterprise EDR program for the National Security Agency.

You will architect and deploy premier endpoint security platforms (MDE and Trellix HX) across hybrid environments, ensuring visibility, containment, and resilient configuration management for critical assets. You will collaborate with threat analysts to translate intel into actionable IOCs, tune agents, and support high-priority investigations, while

Qualifications

• Experience engineering large-scale endpoint security deployments (MDE, Trellix HX).
• Ability to translate threat intel into technical IOCs and rules.
• Strong collaboration with threat hunting and SOC teams.

Responsibilities

• Lead lifecycle engineering and scale-out architecture of MDE and Trellix HX across hybrid environments (on‑prem, cloud, VDI).
• Author engineering and implementation plans; tune agent configurations and exclusions.
• Monitor endpoint health at scale and translate threat intel into IOCs using KQL and YARA.
• Provide advisory support to Government stakeholders on system risks; mentor junior staff.

Skills

Threat intelligence integration

SOC collaboration

Team mentoring

Endpoint security engineering

Tools

Microsoft Defender for Endpoint (MDE)

Trellix HX

Kusto Query Language (KQL)

YARA rules

Job description

Description: 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.

Essential Duties and Responsibilities:

The Systems Engineer 3 is responsible for 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). This includes authoring complex system engineering and implementation plans, tuning agent configurations and exclusion policies to eliminate mission friction, and monitoring overall endpoint health at scale. The engineer will collaborate 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. Additionally, the individual will act as a primary technical advisor to Government stakeholders on system risks and engineering considerations, provide advanced forensic support to the SOC during critical high-priority incidents, and actively mentor junior and mid-level engineering personnel within the program.