System Cybersecurity Engineer

HX5, LLC is seeking a hands-on System Cybersecurity Engineer to support mission-critical systems from Petersen Space Force Base in Colorado Springs, Colorado. In this senior role, you will serve as a cybersecurity subject matter expert, integrating security across the system lifecycle while helping ensure systems remain secure, compliant, and operationally resilient.

Responsibilities

• Conduct risk assessment and vulnerability management by identifying, evaluating, and prioritizing security vulnerabilities across the organization’s digital infrastructure.
• Implement and maintain technical defenses to protect critical assets and secure infrastructure.
• Monitor for potential threats and perform incident response actions to minimize impact and restore operations.
• Support training and awareness by educating employees and customers on cyber risks, including required Government Training associated with the DET 5 and additional DET 5 training listed on the DET 5 myLearning page.
• Ensure cybersecurity compliance with applicable requirements and regulations, including Annual Control Validations and cyber risk assessments.
• Manage third-party risk by overseeing the security posture of vendors and partners to reduce potential vulnerabilities.
• Register, review, and maintain system Ports, Protocols, and Services Management (PPSM) data, including ensuring boundary defenses such as firewalls and routers are configured to align with DISA PPSM Category Assurance List (CAL) requirements.
• Identify and implement process improvements within an Agile Kanban construct to streamline the RMF lifecycle, including efforts to reduce bottlenecks in artifact collection and eMASS package processing.
• Evaluate Engineering Change Proposals (ECPs) at the Engineering Review Board (ERB) level.
• Perform early-stage Security Impact Analysis (SIA) to identify RMF control implications and ensure technical requirements for NCMC-ITW/AA and Legacy Space systems are met before development begins.

Requirements

• One of the following education and experience combinations: 15 years directly related experience with proper certifications (as described in the functionally aligned job description), 8 years of which must be in the DoD; or Bachelor’s degree with 12 years of experience in the applicable technical/professional discipline (with 5 years in the DoD); or Master’s degree with 10 years of experience in the applicable technical/professional discipline (with 5 years of which
• Hold DoD Manual 8140.03 / 8570.01-M baseline certification requirements for Information Assurance Technical (IAT) Level III or Information Assurance Management (IAM) Level II/III (e.g., CISSP, CASP+, CISM).
• Hold or be actively pursuing security-related professional certifications within the GIAC family of certifications or CISSP, CISM, or CISA.
• Provide proof of U.S. Citizenship or U.S. Permanent Residency.
• Be able to complete a U.S. government background investigation.
• Be able to obtain a Top-Secret clearance.
• Be able to travel up to 25%, including air travel.

Technologies

• Agile Kanban
• RMF
• eMASS
• PPSM
• DISA PPSM Category Assurance List (CAL)

Benefits

• Medical/Dental/Vision Insurance
• 401(k) plan with Company Match
• Paid Holidays
• Paid Time Off
• Parental Leave
• Life Insurance
• Tuition Reimbursement
• Medical and Dependent Care Flexible Spending Accounts
• Pet Insurance

Position type: Full-time. Expected hours: 40 hours per week with a flexible schedule Monday through Friday during core business hours.

Location: Colorado Springs, CO (onsite). Experience level: 10 years minimum. Education: Master’s degree.