Senior System Cybersecurity Engineer - RMF & eMASS (Onsite)

Cybersecurity Jobs; Colorado Springs (CO); On-site; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical/Dental/Vision Insurance

401(k) plan with Company Match

Paid Holidays

Paid Time Off

Parental Leave

Life Insurance

Tuition Reimbursement

Flexible Spending Accounts

Pet Insurance

Job summary

HX5, LLC is seeking a hands-on Senior System Cybersecurity Engineer to support mission-critical work at Petersen Space Force Base in Colorado Springs, Colorado. This onsite role integrates cybersecurity across the system lifecycle to keep systems secure, compliant, and operationally resilient.

Responsibilities include risk assessment, vulnerability management, implementing defenses, monitoring threats, incident response, and training staff, with RMF, eMASS, PPSM, and CAL compliance.

Qualifications

• 15+ years of directly related experience with appropriate certifications.
• DoD background with 8+ years in the DoD and meet baseline certification requirements (IAT IAM).
• Bachelor’s or Master’s degree in a technical field coupled with DoD experience.
• U.S. citizenship or permanent residency and ability to obtain a Top-Secret clearance.

Responsibilities

• Perform risk assessment and vulnerability management across digital infrastructure.
• Implement and maintain technical defenses to protect assets and secure infrastructure.
• Monitor threats and support incident response to minimize damage.
• Provide training and awareness, including required Government Training for DET 5.
• Support compliance with RMF, CAL, and DISA PPSM requirements.
• Oversee third-party security posture and vendor risk management.
• Review PPSM data and ensure boundary defenses are configured per CAL.
• Identify process improvements within an Agile Kanban lifecycle for RMF artifacts and eMASS packages.
• Evaluate Engineering Change Proposals at ERB level.
• Conduct early-stage Security Impact Analysis for RMF controls.

Skills

Risk assessment

Vulnerability management

Incident response

Security training

DET 5 training

Education

Bachelor’s degree in a technical field

Master’s degree in a technical field

DoD experience: 8+ years

Tools

Agile Kanban

RMF

eMASS

PPSM

DISA PPSM CAL

Job description

HX5, LLC is seeking a hands-on Senior System Cybersecurity Engineer to support mission-critical work at Petersen Space Force Base in Colorado Springs, Colorado. This onsite role integrates cybersecurity across the system lifecycle to keep systems secure, compliant, and operationally resilient.

Responsibilities include risk assessment, vulnerability management, implementing defenses, monitoring threats, incident response, and training staff, with RMF, eMASS, PPSM, and CAL compliance.