Senior ISSE: RMF-Driven DoD/IC Security Engineer

KaiHonua; Colorado Springs (CO); On-site; USD 140,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, vision, disability, &

Life insurance

Flexible Spending Accounts

401(k)

PTO

Paid paternal leave

Tuition reimbursement

Paid federal holidays

Job summary

Galapagos Federal Systems, LLC is seeking a highly skilled ISSE to support US Space Force cybersecurity across classified environments. The role focuses on secure development, integration, and sustainment of test/ training systems essential to mission readiness.

The ideal candidate brings RMF expertise, DoD/IC cybersecurity experience, and strong communication skills to collaborate with AOs, SCAs, and cross-functional teams. Must hold an active TS/SCI clearance and support A&A activities.

Qualifications

• Active Top Secret/SCI clearance required.
• 5+ years of cybersecurity experience in DoD/IC environments.
• Experience with RMF for mission-critical systems.
• Ability to implement IT security controls for confidentiality, integrity, and availability.
• Experience with POA&Ms, remediation, and SCTMs.
• Experience supporting A&A processes and developing ATO/IATT packages.
• Experience authoring SSPs and related cybersecurity documentation.
• Strong communication skills and ability to brief stakeholders.

Responsibilities

• Perform risk identification and assessment for system and enclave change management.
• Develop and oversee information system security policies and implementation guidelines.
• Support CSSP functions including vulnerability assessments and remediation.
• Conduct security testing and evaluations using IDS, monitoring, and assessment tools.
• Identify, document, and track vulnerabilities in POA&Ms, SARs, and RARs; escalate to AO/DAO.
• Support continuous monitoring and RMF controls compliance.
• Develop and execute security test plans and procedures.
• Support A&A activities and maintain ATO/IATT packages.
• Author and maintain System Security Plans (SSPs) and related docs.
• Coordinate with AOs, SCAs, and CM authorities to support security and accreditation.

Skills

Active TS/SCI clearance

RMF expertise

DoD/IC cybersecurity

Vulnerability management

A&A / SSPs / ATO

Security testing & evaluation

Documentation & stakeholder briefings

Cross-team collaboration

Education

BS in IT / Cybersecurity / IS / CS

Security+ or CISSP or CISSP-ISSMP

Job description

Galapagos Federal Systems, LLC is seeking a highly skilled ISSE to support US Space Force cybersecurity across classified environments. The role focuses on secure development, integration, and sustainment of test/ training systems essential to mission readiness.

The ideal candidate brings RMF expertise, DoD/IC cybersecurity experience, and strong communication skills to collaborate with AOs, SCAs, and cross-functional teams. Must hold an active TS/SCI clearance and support A&A activities.