System Cybersecurity Engineer

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 System Cybersecurity Engineer (Senior) to support mission-critical cybersecurity work at Petersen Space Force Base in Colorado Springs, Colorado. In this onsite role, you will integrate cybersecurity across the system lifecycle, helping ensure systems remain secure, compliant, and operationally resilient.

Key Responsibilities

• Perform 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 threats and support incident response activities to minimize damage and restore operations quickly.
• Provide training and awareness for employees and customers, including required Government Training for DET 5 and additional DET 5 training through the DET 5 my Learning page.
• Support cybersecurity compliance with 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 prevent potential vulnerabilities.
• Register, review, and maintain System Ports, Protocols, and Services Management (PPSM) data, ensuring boundary defenses such as firewalls and routers are configured in line 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.
• Conduct 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.

Required Qualifications

• Education and experience must match one of the following combinations: 15 years of directly related experience with proper certifications described in the functionally aligned job description, with 8 years in the DoD; or Bachelor’s degree plus 12 years in the respective technical/professional discipline, with 5 years in the DoD; or Master’s degree plus 10 years in the respective technical/professional discipline, with 5 years in the DoD.
• 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 (for example: CISSP, CASP+, CISM).
• Hold or be actively pursuing security-related 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

Location: Colorado Springs, CO (onsite). Experience: 10+ years. Education: Master’s degree. Position Type: Full-time, 40 hours per week, with a flexible work schedule Monday through Friday during core business hours.