Systems Engineer – Cyber & Security

ExistX

Mid-level Cyber Systems Engineer role at ExistX enhancing national security through cyber systems engineering. Collaborating on security accreditation processes for cryptographic devices used in aircraft communications.

Posted 7/14/2026full-timeDayton • Ohio • 🇺🇸 United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in technical program coordination, customer security accreditation, and cryptographic key management, ensuring compliance with government standards and effective collaboration with cross-functional teams.

Highest-signal resume keywords

Technical Program CoordinationCryptographic Key ManagementU.S. Government Security ClearanceCyber SecurityRisk Management Framework (RMF)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Engineering Design ReviewSecurity Deficiency AnalysisCOMSEC ManagementTest Plan DevelopmentHardware Security AssessmentSoftware Security AssessmentCyber-Physical Systems

Soft Skills

Strong CommunicationCollaboration

Certifications & Qualifications

Bachelor's Degree

Industry Keywords

Customer Security AccreditationAuthority To Operate (ATO)DoD Risk Management FrameworkGovernment Certification ProcessesPlatform IT Development

Tech Stack

Tools & technologies

Cyber SecurityTypeScript

About the role

Key responsibilities & impact

Serves as a technical program coordinator supporting customer security accreditation activities
Technical liaison between government agencies and prime contractors in customer-facing recurring meetings, milestone reviews, and documentation with key stakeholders.
Applies technical expertise to review engineering designs or security deficiencies such as red/black separation and zeroization in critical scenarios.
Drafts processes for proper COMSEC and crypto key management for pilots and flight personnel.
Advises and contributes to the development of test plans for both physical and logical interfaces to ensure compliance with requirements set by the accreditation bodies.
Serves as the Customer focal point for managing projects through certification processes for cryptographic devices, as well as associated tactical systems with the DoW/DoD Risk Management Framework (RMF)
Supports hardware and software security assessments for embedded and cyber-physical systems
Collaborates with cross-functional teams to ensure project success and timely delivery

Requirements

What you’ll need

Bachelor's degree with 5-10 years of relevant technical and/or customer experience.
Background in cyber security, engineering, cryptographic key management, or related technical field.
Possess/maintain a current/or recent U.S. Government Security Clearance (Active TS/SCI security clearance preferred).
U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
Familiarity working with platform IT development teams and supporting their ability to successfully satisfy SERD (IASRD) and CD RD (TSRD) requirements.
Experience supporting government activities for certification and the Authority To Operate (ATO) processes, particularly for cryptographic systems.
Strong communication skills and ability to collaborate with diverse stakeholders.

Benefits

Comp & perks

Competitive salaries
Employer paid medical insurance plan
Health Savings Account (HSA) with employer contributions
Employer paid dental and vision insurance plans
401(k) retirement plan with employer match
Flexible work location with a remote friendly culture
Generous paid time off (25 days per year)