Sr. Staff Application Security Engineer

Sci Tec, a wholly owned subsidiary of Firefly Aerospace, 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: Sci Tec 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.

Sci Tec 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 Infra Red (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 Dev Sec Ops  environment.

• 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 Dev Sec Ops  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, Sonar Qube)

• 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 Dev Sec Ops  or Agile development environments

Sci…