*E01 Cyber Security Engineer IV

Start Date: Immediate

JHNA, CTSi, and EXPANSIA have come together to form a Defense Technology platform named Aether Aerospace focused on delivering high-impact technologies, technology-enabled services and advanced manufacturing solutions to the U.S. Department of Defense and related national security customers. Backed by Falfurrias Management Partners, the platform brings together deep domain expertise across Army, Navy, and Air Force and Space Force programs, digital engineering, systems integration, and specialized manufacturing capabilities.

The combined organization operates as a multi-entity aerospace and defense technology and tech-enabled services and manufacturing enterprise positioned for scalable growth, operational excellence, and long-term value creation.

OVERVIEW

Full-time/Permanent Employee

Location: Remote

As a Cyber Security Engineer IV, you will be an emerging authority in Microsoft Defender security technologies, applying deep technical expertise to design, implement, and optimize advanced endpoint and cloud security solutions. You will lead the deployment and integration of Microsoft Defender for Endpoint, Cloud, and Servers to protect enterprise information systems, network infrastructure, and critical data assets while ensuring compliance with industry and regulatory standards. This role requires significant autonomy in defining security objectives, engineering scalable security architectures, and leading incident response and threat mitigation efforts. You will collaborate closely with IT leadership and stakeholders to conduct security assessments, strengthen access controls, and continuously enhance the organization’s security posture through Microsoft’s integrated security ecosystem.

The proposed salary range for this position is $128,899 - $133,000. There are a host of factors that can influence final salary including, but not limited to, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, geographic location, education, and certifications. Our employees value the flexibility EXPANSIA allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our unique mix of benefits options is designed to support and protect employees and their families. Employment benefits include health and wellness programs, income protection, paid leave and retirement and savings.

RESPONSIBILITIES:
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Deploy and fine-tune Endpoint Detection and Response (EDR) solutions for real-time threat monitoring and response.

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Configure and optimize Next-Generation Antivirus (NGAV) using behavioral-based protection techniques.

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Conduct continuous vulnerability assessments and develop remediation strategies.

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Implement and maintain attack surface reduction rules to minimize endpoint exposure.

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Integrate Microsoft cloud-delivered protection and monitor Azure-hosted services.

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Connect Microsoft Defender with Microsoft Sentinel and other SIEM tools for centralized logging and analytics.

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Ensure comprehensive endpoint security across Windows, Linux, and mobile platforms.

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Develop reports, dashboards, and alerts to support security operations and compliance.

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Design, implement, and manage Windows Defender Application Control (WDAC) policies.

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Implement Data Loss Prevention (DLP) using Microsoft Defender, Intune, and Purview.

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Apply System Engineering Lifecycle principles to security solution design and maintenance.

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Ensure all contractual deliverables are met or exceeded to customer satisfaction

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Complete personal PDP and attend Staff Meeting and Storytime (with camera on)

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Build productive and positive professional relationships with clients within the program

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Execute all contract requirements in accordance with contract-specific LCAT and requirements

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Perform other related duties as assigned

KEY QUALIFICATIONS:
KEY QUALIFICATIONS

Clearance: Active Secret Clearance
Education and Years of Experience: Bachelor's degree in Computer Science, Information Technology, or Relevant Field and 10 years of relevant experience. Or Associate’s degree and 15 years of relevant experience.

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Experience with Microsoft Defender for Endpoint, Cloud, and Servers

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Endpoint security, threat hunting, and incident response experience

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Familiarity with SIEM solutions, especially Microsoft Sentinel

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Strong analytical, communication, and collaboration skills

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Knowledge of cybersecurity frameworks (e.g., NIST) and regulations (GDPR, HIPAA)

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Security+ CE Certification (or other IAT Level II or III Certification)

PREFERRED ADDITIONAL QUALIFICATIONS :
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Other Relevant Technical and/or Security Certifications (e.g., Network +, Microsoft AWS, VMware, CISSP, CISM, CCNA, CCDA, CCNA-Security, etc.), are a plus.

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ServiceNow security workflow automation

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Linux administration experience (Red Hat Enterprise Linux)

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Microsoft Active Directory / Entra ID

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Microsoft Federation Services

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Power BI dashboarding and analytics

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Advanced PowerShell scripting or software development experience

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DoD PKI experience

Aether Aerospace is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.