Security Software Engineer – TS/SCI Ready, DoD RMF

Loft Federal; Denver (CO); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

100% medical/dental/vision insurance

401(k) plan and equity options

Fully paid parental leave

Relocation assistance where applicable

Job summary

Loft Federal seeks a senior cybersecurity engineer to embed security into space and ground-system development. You will design secure architectures, implement RMF-aligned controls, and drive vulnerability assessment with engineering teams.

The role demands TS clearance, 5+ years in secure software engineering, and hands-on C++/Python. Onsite work 3 days weekly with up to 10% travel, offering strong compensation and comprehensive benefits.

Qualifications

• Active TS clearance or eligibility (TS/SCI preferred).
• Bachelor's degree in Cybersecurity, Computer Science, Engineering, or a related technical field.
• One IAT Level III certification: CISSP, SecurityX (CASP+), CCNP, or CCSP.
• 5+ years of software engineering experience with a security focus (security engineering).
• 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.
• Strong communication and collaboration skills.
• Must be able to work onsite 3 days per week, travel up to 10%.

Responsibilities

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

Skills

Top Secret clearance

C++

Python

Strong communication

Team collaboration

Education

Bachelor's degree in Cybersecurity, CS, Eng, or related field

Tools

CISSP

SecurityX (CASP+)

CCNP

CCSP

RMF & NIST SP 800-53 controls

Job description

Loft Federal seeks a senior cybersecurity engineer to embed security into space and ground-system development. You will design secure architectures, implement RMF-aligned controls, and drive vulnerability assessment with engineering teams.

The role demands TS clearance, 5+ years in secure software engineering, and hands-on C++/Python. Onsite work 3 days weekly with up to 10% travel, offering strong compensation and comprehensive benefits.