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Application Security Engineer

Job in Englewood, Arapahoe County, Colorado, 80151, USA
Listing for: Compunnel, Inc.
Full Time position
Listed on 2026-06-18
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, IT Consultant, Data Security
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below

The Application Security Engineer will play a critical role in safeguarding web, mobile, and backend systems from vulnerabilities and malicious activity. This role involves deep technical testing, fraud detection, and integration with development teams to build secure-by-design solutions. It combines security expertise with hands-on experience in modern technologies, including wireless protocols, APIs, automation, and threat detection tools.

Job Responsibilities:

  • Perform application security testing on front-end web and mobile apps.
  • Collaborate with GraphQL and backend teams to secure APIs and data flow.
  • Analyze wireless domain components like eSIMs for telecom-specific vulnerabilities.
  • Investigate fraud risks in business logic through detailed scenario testing.
  • Conduct adversarial testing with a hacker's mindset to simulate abuse cases.
  • Simulate social engineering breaches to test internal defenses.
  • Monitor and analyze data traffic to identify potential security gaps.
  • Create, document, and maintain security policies, procedures, and training materials.
  • Implement industry best practices for secure software development.
  • Conduct gap analysis to ensure alignment with standards and compliance requirements.
  • Continuously evaluate and enhance security posture in response to emerging threats.
  • Automate security checks using BDD frameworks and CI/CD pipelines.
Required Skills:

Hands-on experience with:

  • App Security Testing: OWASP ZAP, Burp Suite, MobSF, Appium, Selenium, Charles Proxy
  • API Security:
    GraphQL, JWT, OAuth 2.0, API Gateway, Kong
  • Wireless/Telecom: eUICC, GSMA, Wireshark, QXDM, QCAT
  • Social Engineering Simulation: SET, Gophish, OSINT tools
  • Monitoring/Data Flow:
    Wireshark, tcpdump, Fiddler
  • Security Standards: NIST, ISO 27001, CIS Benchmarks
  • Best Practices: OWASP ASVS, Jenkins, Git Hub Actions, Snyk, Sonar Qube
  • Gap Analysis:
    Nessus, OpenVAS, Qualys, RSA Archer
Preferred

Skills:

  • Experience in fraud management tools (e.g., Actimize, SAS)
  • Familiarity with Dev Sec Ops  pipelines and secure SDLC frameworks
  • Exposure to CVE analysis and threat intelligence platforms (e.g., Recorded Future, MISP)
Certifications:

Security certifications such as OSCP, CEH, GWAPT, or CISSP (preferred but not mandatory)

Education:

Bachelor’s degree in computer science, Cybersecurity, or a related field

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