Application Security Engineer
- Salary
- $102,000 - $157,000 / year
- Level
- Mid
Not stated in the posting: work type, visa.
Open. First seen 21 October 2026.
About the role
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
Requirements
- 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
SciTec's standard text
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
SciTec's standard text
*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.
Benefits
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's standard text
SciTec is proud to be an Equal Opportunity employer. VET/Disabled.
What this role asks for
Standard for security roles
Cybersecurity
Common in security postings at any company.
In most of SciTec's ads
Python
Named in most of its open postings, whatever the role.
90% of this description is written for the role. The rest is SciTec's standard text, folded away below.
Compared with SciTec's other open jobs.
The team: Defense, Intelligence, & Space Solutions HIRES STEADILY
This role is one of 37 open in Defense, Intelligence, & Space Solutions. 20 were posted in the last 30 days and the oldest in April: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (26 of 37), Kubernetes (21 of 37), Linux (20 of 37), Agile (18 of 37), C++ (16 of 37), CI/CD (16 of 37), Docker (14 of 37)
OTHER ROLES ON THIS TEAM
- Associate / Staff Software Release Engineer posted Oct 20
- Staff / Senior Staff Test Automation Engineer (Clearance Required) posted Oct 20
- PKI and Certificate Lifecycle Engineer posted Oct 19
- Technical Program Manager (Radar) posted Oct 19
- Project Control Analyst posted Oct 16
- Principal Software Engineer - Data Storage Domain Lead posted Oct 9
- Principal Software Engineer - Deployment Environments Domain Lead posted Oct 9
- Principal Software Engineer - Workload Communications Domain Lead posted Oct 9
- Principal Software Engineer - Deployment Environments Domain Lead posted Oct 9
- Principal Software Engineer - Workload Communications Domain Lead posted Oct 9
- Principal Software Engineer - Data Storage Domain Lead posted Oct 9
- Staff / Senior Staff Systems Engineer posted Oct 6
- System Security Architect (Clearance Required) posted Oct 5
- Platform Software Engineer posted Oct 2
- Senior Staff / Senior Numerical Algorithm Software Engineer posted Sep 30
- Associate / Staff Mission Data Analyst (Clearance Required) posted Sep 29
- Staff / Sr Staff C++ Software Engineer posted Sep 25
- Senior Staff / Senior Systems Engineer posted Sep 25
- Staff / Sr Staff Test Automation Engineer posted Sep 25
- Staff / Senior Staff Systems Engineer posted Sep 21
- Associate / Staff Digital Systems Engineer posted Sep 21
- Systems Engineering Lead posted Sep 21
- Sr Staff Software Engineer posted Sep 11
- Staff / Sr Staff Python Software Engineer posted Aug 27
- Staff / Senior Staff Test Automation Engineer (Clearance Required) posted Aug 24
- Sr Staff / Senior Software Engineer posted Aug 21
- Systems Engineer - Compute and Software Systems posted Aug 12
- Radar Systems Integration Engineer posted Aug 4
- Principal Radar Systems Engineer posted Aug 4
- Principal Linux System Administrator (Clearance Required) posted Aug 3
- Senior Numerical Algorithm Software Engineer posted Jul 29
- Lead Application Security Engineer posted Jul 20
- Senior Staff / Senior Machine Learning Engineer posted Jun 25
- Staff / Sr Staff Application Security Engineer posted Jun 1
- Staff / Sr Staff Numerical Algorithm Software Engineer posted May 15
- Staff / Sr Staff C++ Software Engineer posted Apr 16
From the team and dates on SciTec's own job board.
Posting history
Reposted once since 20 July 2026: a posting for this role in Boulder was taken down and the role was posted again.
- 21 October 2026 – open (this posting)
- 20 July 2026 – closed 25 September 2026
Salary context
10 other open postings titled Application Security Engineer state a salary: median USD 130,000 to USD 222,100 a year.
See Security Engineer salaries in the United States →
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