Application Security Engineer

SciTec; Boulder (CO); On-site; USD 102,000 - 157,000; Full time

Benefits offered by this job

401(k) match

Company-paid health insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

Paid parental leave

Paid time off

Flexible work hours

Job summary

SciTec, a Firefly Aerospace Company, is hiring an Application Security Engineer to secure mission-critical software for national defense. You will perform automated and manual security analyses, support DevSecOps tooling, and work with software engineers to embed security in the development lifecycle.

The role requires 2+ years in cybersecurity or software development, proficiency in multiple languages, and the ability to obtain/maintain a DoD Secret clearance.

Qualifications

• Bachelor’s degree in cybersecurity or related field plus 2+ years in security or software development.
• 2+ years focused on application/security analysis and secure coding practices.
• Ability to qualify for and maintain a DoD or DoE Secret clearance within six months.
• Strong written and verbal communication with detail orientation.

Responsibilities

• Perform application security analysis using automated and manual techniques (SAST, SCA, fuzzing, reviews).
• Identify, analyze, and remediate vulnerabilities in software products.
• Assist dev teams in embedding security into designs and CI/CD pipelines.
• Tune security tooling to reduce false positives and improve signal quality.
• Support threat modeling and secure design reviews; stay current on vulnerabilities.
• Document findings and best practices for engineering teams.

Skills

C++

Python

JavaScript

Rust

Threat modeling

DevSecOps

Agile

DoD clearance

Education

Bachelor’s degree in cybersecurity or related field

Tools

Coverity

Klocwork

SonarQube

AFL

AFL++

honggfuzz

strace

eBPF

Ghidra

IDA Pro

Job description

SciTec, a Firefly Aerospace Company, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions.

Important Notice: SciTec exclusively works on U.S. government contracts that require U.S. citizenship for all employees. Applicants that do not meet this requirement will not be considered.

SciTec has an immediate opportunity for a talented engineer to support our programs delivering Next-Generation Missile Warning software. This is a unique opportunity to join a business delivering core capabilities for National defense. You will work within a fast-paced team delivering end-to-end software processing of Overhead Persistent InfraRed (OPIR) sensor data for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence.

We are seeking an Application Security Engineer to help secure mission‑critical software systems by identifying, analyzing, and mitigating application-level vulnerabilities. This role focuses on hands‑on security analysis, tooling integration, and working directly with software engineers to embed security into the development lifecycle.

The ideal candidate combines strong technical security skills with the ability to collaborate effectively with developers in a DevSecOps environment.

Responsibilities

• Perform application security analysis using both automated and manual techniques, including:
• Static code analysis (SAST)
• Software composition analysis (SCA)
• Fuzzing
• Manual code and design reviews
• Identify, analyze, and help remediate application vulnerabilities
• Support software engineers in integrating security considerations into system and application designs
• Integrate and maintain application security tooling within CI/CD and DevSecOps pipelines
• Design, implement, and improve continuous integration security analysis tooling
• Tune and maintain security tools to reduce false positives and improve signal quality
• Assist development teams in understanding findings and implementing effective fixes
• Support threat modeling and secure design reviews
• Stay current with emerging vulnerabilities, attack techniques, and mitigation strategies
• Document findings, recommendations, and best practices
• Perform other duties as assigned

• Bachelor’s degree plus 2+ years of professional experience in cybersecurity or software development, or equivalent experience

• 2+ years of experience focused on application/software security
• Experience analyzing source code for security flaws
• Familiarity with secure software development practices
• Strong analytical, problem‑solving, and communication skills
• Detail‑oriented with strong written and verbal communication abilities
• Ability to qualify for and maintain a DoD or DoE Secret security clearance
• Ability to meet DoD 8140.01 Cyberspace Workforce Management requirements within six months of hire
• Good verbal and written communication skills
• Attention to detail

Candidates who have any of the following skills will be preferred:

• Active DoD Secret clearance or higher
• Experience identifying, exploiting, and remediating application vulnerabilities
• Credit for published CVEs is a strong plus
• Proficiency in one or more programming languages such as C++, Python, JavaScript, Rust
• Experience configuring and operating static analysis tools (e.g., Coverity, Klocwork, SonarQube)
• Experience configuring and operating software composition analysis tools (e.g., Snyk, Sonatype, Anchore, JFrog Xray)
• Experience with fuzzing frameworks (AFL, AFL++, honggfuzz, or similar)
• Experience with debugging, runtime instrumentation, or reverse engineering, including tools such as:
• strace
• eBPF
• Ghidra or IDA Pro
• Familiarity with threat modeling methodologies and frameworks such as MITRE ATT&CK
• Experience working in DevSecOps or Agile development environments

*Resumes, Cover Letters, and Applications which are generated by AI will not be considered for employment.

Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

SciTec offers a highly competitive salary and benefits package, including:

• 4% Safe Harbor 401(k) match
• 100% company paid HSA Medical insurance, with a choice of 2 buy-up options
• 80% company paid Dental insurance
• 100% company paid Vision insurance
• 100% company paid Life insurance
• 100% company paid Long-term Disability insurance
• 100% company paid Hospital Indemnity insurance
• Voluntary Accident and Critical Illness insurance
• Short-term Disability insurance
• Annual Profit‑Sharing Plan
• Discretionary Performance Bonus
• Paid Parental Leave
• Generous Paid Time Off, including Holiday, Vacation, and Sick Pay
• Flexible Work Hours

The pay range for this position is $102,000 - $157,000 / year. SciTec considers several factors when extending an offer of employment, including but not limited to the role and associated responsibilities, a candidate's work experience, education/training, and key skills. This is not a guarantee of compensation.

SciTec is proud to be an Equal Opportunity employer. VET/Disabled.