Space Systems ISSE: RMF‑Driven Security Engineer

Cerebras; Arvada (CO); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

100% company-paid medical, dental, and

Vision insurance

Life and disability coverage

Flexible time off

401(k) and equity

Daily catered lunches

Parental leave

Relocation assistance

Job summary

Loft Federal is seeking an Information Systems Security Engineer (ISSE) to help design and secure the systems powering national security space missions. You will partner with software, systems, infrastructure, and mission engineers to integrate cybersecurity throughout the system lifecycle—from architecture and implementation through authorization and continuous monitoring.

This role combines hands-on security engineering with RMF execution, ensuring our systems meet government security

Qualifications

• Bachelor's degree in a technical field and 5+ years of ISSE/cybersecurity engineering experience.
• Experience implementing RMF and NIST SP 800-53 security controls.
• Experience developing RMF artifacts and supporting Authority to Operate (ATO).
• Familiarity with Windows and Linux system hardening and vulnerability management.
• Strong communication and collaboration skills; active TS clearance or TS/SCI eligibility.

Responsibilities

• Embed cybersecurity into space and ground system design and development.
• Develop secure architectures and implement security controls per RMF/NIST.
• Work with engineering teams to identify, assess, and remediate vulnerabilities.
• Support system hardening, vulnerability management, and continuous monitoring.
• Perform security architecture reviews, threat modeling, and risk assessments.
• Collaborate with DevSecOps to integrate security into CI/CD pipelines.
• Coordinate with government customers, ISSMs, and program teams to maintain compliant systems.

Skills

Information security

Cybersecurity

RMF

NIST SP 800-53

Windows

Linux

Communication

Collaboration

Security architecture

DevSecOps

Education

Bachelor's degree in Cybersecurity, Computer Science, Engineering, or related technical field

Tools

ACAS

Nessus

DISA STIGs

Kubernetes

Job description

Loft Federal is seeking an Information Systems Security Engineer (ISSE) to help design and secure the systems powering national security space missions. You will partner with software, systems, infrastructure, and mission engineers to integrate cybersecurity throughout the system lifecycle—from architecture and implementation through authorization and continuous monitoring.

This role combines hands-on security engineering with RMF execution, ensuring our systems meet government security