Security Software Engineer — DoD/TS Clearance

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

Benefits offered by this job

100% company-paid medical, dental, and

vision insurance

FSA/HSA with employer contribution

Life, AD&D, Short-Term, and Long-Term

Flexible Time Off + 12 holidays

401(k) + equity options

Daily catered lunches

Parental leave (14/10 weeks)

Carrot Fertility benefits

Off-sites and social events

Relocation assistance

Job summary

Loft Federal is hiring a cybersecurity-focused engineer in Colorado to design secure space systems. You will integrate RMF/NIST controls, model threats, and lead vulnerability management with DoD-aligned practices.

The role requires strong C++/Python skills, DoD RMF experience, and collaboration with government customers. Onsite work three days per week with up to 10% travel is required.

Qualifications

• Active Top Secret clearance (TS/SCI eligibility preferred).
• Bachelor's degree in Cybersecurity, Computer Science, Engineering, or related field.
• One 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.
• Knowledge of system hardening and vulnerability management.
• Strong communication and collaboration skills.
• Onsite 3 days/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 and program teams to keep systems compliant.

Skills

C++

Python

Security engineering

Communication

Collaboration

DevSecOps

Education

Bachelor's degree in Cybersecurity/CS/Engineering

Tools

Nessus

ACAS

DISA STIGs

Job description

Loft Federal is hiring a cybersecurity-focused engineer in Colorado to design secure space systems. You will integrate RMF/NIST controls, model threats, and lead vulnerability management with DoD-aligned practices.

The role requires strong C++/Python skills, DoD RMF experience, and collaboration with government customers. Onsite work three days per week with up to 10% travel is required.