Software Engineer - Security Test

    Shenzhen
    Full-Time
    Mid (3-6 yrs)
    Engineering & Development
    Posted on November 24, 2025
    The Software Security Test Engineer is responsible for consistent effort in monitoring Android-based attack tools and performing security testing on all tools that may be a threat to PayJoy’s lock products.
    Responsibilities
  1. Collect and evaluate hacking tools; continuously monitor emerging attack techniques and tools that could impact company products.
  2. Perform security testing on OEM mobile phones using hacking tools and techniques.
  3. Reproduce and verify security issues discovered on social media, public forums, and other open sources.
  4. Produce, manage, and maintain clear security testing reports.
  5. Coordinate with internal teams and external parties to track, prioritize, and verify fixes for security issues.
  6. Requirements
  7. Bachelor’s degree in a technical discipline such as computer science, software engineering, or a related field.
  8. 4+ years of experience in financial technology services.
  9. Strong understanding of Android security architecture.
  10. Practical knowledge of secure boot and the device boot chain.
  11. Hands-on experience with Android permissions, app sandboxing, and privilege models.
  12. Proven experience in security testing — identifying, reproducing, and documenting vulnerabilities in mobile devices or applications.
  13. Ability to write clear and structured technical reports.
  14. Good English reading and writing skills for report preparation and cross-team communication.
  15. Benefits
  16. 100% Company Funded : Private Health Insurance for employee and immediate family
  17. Company Funded employee life and disability insurance
  18. 15 days vacation, unlimited sick leave
  19. Phone finance, Headphone, home office equipment and wellness perks.
  20. $2,000 USD annual Co-working Travel perk
  21. $2,000 USD annual Professional Development perk
  22. Phone Finance, headphone benefit, home office equipment allowance and wellness perks
  23. Company:  PayJoy

    Provides affordable smartphone financing and credit access to underserved customers in emerging markets.
    1001-5000 employees
    Finance & Fintech
    HQ: United States