Software Engineer - Security

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

About Loft Federal

Loft Federal is committed to delivering theU.S. national security space communityafast, affordable, and streamlinedpathway to orbit. As awholly owned U.S. subsidiaryof Loft Orbital Solutions, Inc., we specialize in providing mission-ready space infrastructure with unmatched efficiency.

At Loft, we empower our team withautonomy, ownership, and bold problem-solving opportunitieswhile fostering atight-knit, supportive environment. We believe thatdiversity, inclusivity, and communityare the foundation of an open and innovative culture. We valuekind, collaborative, and mission-driven teammateswho excel inproblem-solving and communication—because great solutions come from great teams.

Are you ready to embark on this exciting journey with us?

Loft Federal is seeking an 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. You will join a small, senior team where your expertise carries weight and your work shows up in the mission right away.

You will partner with software, systems, infrastructure, and mission engineers. Together you will build security into each phase of the system lifecycle, from architecture and implementation through authorization and continuous monitoring.

This role pairs hands-on engineering with RMF execution. Our systems meet government security requirements and our missions ship fast.

This is a full-time hybrid role in Arvada, CO.

What You'll Do

• Build cybersecurity into the design and development of space and ground systems.
• Design secure architectures and implement controls aligned to NIST 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 keep systems compliant and mission ready.

Must Haves

• Active Top Secret clearance (TS/SCI eligibility 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, such as systems security engineering or cybersecurity 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
• Solid grasp of secure system architecture
• Strong communication and collaboration skills
• Must be able to work onsite 3 days per week, and travel up to 10%

Nice to Haves

• Experience on DoD, Intelligence Community, or national security space programs
• Windows and Linux administration
• Cloud security, Kubernetes, containers, or DevSecOps
• ACAS, Nessus, DISA STIGs, or similar assessment tools
• Zero Trust Architecture

Some of Our Awesome Benefits:

• 100% company-paid medical, dental, and vision insurance option for employees and dependents
• Flexible Spending (FSA) and Health Savings (HSA) Accounts offered with an employer contribution to the HSA
• 100% employer paid Life, AD&D, Short-Term, and Long-Term Disability insurance
• Flexible Time Off policy for vacation and sick leave, and 12 paid holidays
• 401(k) plan and equity options
• Daily catered lunches and snacks in office
• Fully paid parental leave; 14 weeks for birthing parent and 10 weeks for non-birthing parent
• Carrot Fertility provides comprehensive, inclusive fertility healthcare and family-forming benefits with financial support
• Off-sites and many social events and celebrations
• Relocation assistance when applicable

Per Colorado law, we are required to disclose the base compensation range for this role. This range is intentionally wide as we assess individuals based on their unique abilities and experience to find the best fit for our needs. Ultimately, your compensation will be determined by your education, experience, knowledge, skills, and abilities.

In addition to a competitive salary and benefits package, you will find a truly remarkable culture guided by transparency and collaboration and work that is challenging and meaningful. We can't wait to meet you and see what you may add to our team!

Salary Range

$110,000 — $150,000 USD

Equal Employment Opportunity & Affiant Action

Loft Federal is an Equal Employment Opportunity and Affiant Action Employer. We consider all qualified applicants for employment without regard to race, color, age, religion, sex, gender identity or expression, sexual orientation, marital status, national origin, ancestry, veteran status, genetic information, disability, pregnancy, or any other legally protected status.

Accessibility & Accommodations

If you require a reasonable accommodation due to a disability when applying for an open position, please contact us at [e-mail] for assistance.

We Hire for Talent, Not Just Resumes

Research shows that while men apply for jobs when they meet about60% of the qualifications, women and other underrepresented groups tend to apply only when they meet100% of the listed criteria. At Loft Federal, wevalue diverse perspectives, respectful debate, and people who challenge assumptions. If you’re excited about a role but don’t meet every requirement, we strongly encourage you to apply.