Space Systems Security Engineer — RMF/DoD Focus

Loft Orbital; Arvada (CO); Hybrid; USD 110,000 - 150,000; Full time

Job summary

Loft Federal is seeking a Software Engineer with experience in Security to design and secure the systems behind our national security space missions.

You will own the security architecture from day one and join a small, senior team where your expertise contributes to mission readiness. You will collaborate with software, systems, infrastructure, and mission engineers to embed security throughout the lifecycle, from architecture through authorization and continuous monitoring.

Qualifications

• Active Top Secret clearance (TS/SCI eligibility preferred).
• Bachelor's degree in Cybersecurity, CS, Engineering, or related field.
• IAT Level III certification: CISSP, SecurityX (CASP+), CCNP, or CCSP.
• 5+ years of software engineering experience with a security focus.
• Hands-on experience with C++ and Python.
• Experience implementing DoD RMF and NIST SP 800-53 controls.
• Experience building RMF artifacts and supporting ATO efforts.
• Working knowledge of system hardening and vulnerability management.
• Must be onsite 3 days per week with up to 10% travel.

Responsibilities

• Build cybersecurity into the design and development of space and ground systems.
• Design secure architectures and implement controls aligned to RMF and DoD requirements.
• Find, assess, and fix vulnerabilities with engineering teams.
• Support system hardening, vulnerability management, and continuous monitoring.
• Lead security architecture reviews, threat modeling, and risk assessments.
• Integrate security into automated pipelines with DevSecOps teams.
• Work with government customers, ISSMs, and program teams to stay compliant and mission ready.

Skills

Security

C++

Python

Threat modeling

RMF compliance

Education

Bachelor's degree in Cybersecurity, CS, or Engineering

Tools

ACAS

Nessus

DISA STIGs

Job description

Loft Federal is seeking a Software Engineer with experience in Security to design and secure the systems behind our national security space missions.

You will own the security architecture from day one and join a small, senior team where your expertise contributes to mission readiness. You will collaborate with software, systems, infrastructure, and mission engineers to embed security throughout the lifecycle, from architecture through authorization and continuous monitoring.