Senior Systems Engineer – Endpoint Security

The Opportunity
CACI is seeking a Senior Systems Engineer that will serve as a principal technical leader and subject matter expert for the National Security Agencys Enterprise Endpoint Detection and Response (EDR) Program. Working within a highly classified multi-domain environment you will shape the strategic architecture integration deployment and optimization of worldclass endpoint security platforms including Microsoft Defender for Endpoint (MDE) and Trellix HX. This is a chance to directly strengthen national security by engineering resilient endpoint defense capabilities that provide full enterprise visibility rapid threat containment and robust configuration management.

Responsibilities

• Lead the full lifecycle engineering and scale-out architecture of MDE and Trellix HX across hybrid environments including onpremises cloud and virtual desktop infrastructures (VDI).

• Develop advanced system engineering documentation deployment strategies and implementation plans.

• Optimize agent configurations exclusion policies and system performance to ensure mission success and minimize friction across highdemand environments.

• Monitor and maintain enterprise endpoint health at scale.

• Work directly with threat hunters and intelligence analysts to convert actionable intelligence into custom technical indicators of compromise (IOCs) using KQL and YARA.

• Serve as a primary technical advisor to Government stakeholders regarding system risks design decisions and engineering recommendations.

• Provide advanced forensic and technical support to the SOC during highpriority incidents.

• Mentor junior and midlevel engineers fostering growth collaboration and technical excellence.

Qualifications:

Required:

• 20 years of experience as a Systems Engineer on programs of similar scope type and complexity.

• Proven experience planning and leading Systems Engineering efforts.

• Bachelors degree in Systems Engineering Computer Science Information Systems Engineering Science Engineering Management or a related field from an accredited institution.

  • Five (5) additional years of Systems Engineering experience may be substituted for a bachelors degree.

• Microsoft Defender for Endpoint Expertise: Handson engineering experience with MDE architecture deployment via MECM/SCCM or Intune policy ring management and advanced hunting using Kusto Query Language (KQL).

• Trellix HX Expertise: Proven ability to engineer deploy and manage Trellix HX controllers and agents within airgapped or highly restricted networks including creating OpenIOC and YARA rules.

• Operating System & Forensic Knowledge: Deep understanding of Windows Linux and macOS internals including file systems registries and process execution behavior.

• Professional Certifications: Compliance with DoD 8570/8140 IAM Level II or III baseline requirements.

Desired:

• Vendor Certifications: Microsoft Security Operations Analyst (SC200) Azure Security Engineer (AZ500) and/or Trellix engineering certifications.

• Methodologies & Tools: Experience with ModelBased Systems Engineering (MBSE) Cameo and Atlassian suite tools such as Jira and Confluence.

• Technical Frameworks: Familiarity with NSA Technical Manual standards (e.g. NSA DS89) and defenseindepth engineering principles.

• Core Competencies: Demonstrated collaboration skills transparency in managing highconsequence systems and a passion for developing and mentoring technical talent.

What You Can Expect:

A culture of integrity.

At CACI we place character and innovation at the center of everything we do. As a valued team member youll be part of a high-performing group dedicated to our customers missions and driven by a higher purpose to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. Youll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together we will advance our nations most critical missions build on our lengthy track record of business success and find opportunities to break new ground in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including but not limited to geographic location Federal Government contract labor categories and contract wage rates relevant prior work experience specific skills and competencies education and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI you will receive comprehensive benefits such as; healthcare wellness financial retirement family support continuing education and time off benefits.

The proposed salary range for this position is: