Responsibilities
- Proactively and systematically test PayJoy's device locking mechanism on a diverse range of Android devices and OS versions following every OTA update.
- Conduct thorough, periodic testing of the lock after every update or modification to the PayJoy lock technology.
- Actively research, identify, acquire, and utilize existing and emerging lock-breaking tools, software, hardware techniques, and methodologies (e.g., factory reset exploits, bootloader vulnerabilities, ADB exploits, custom ROM flashing, FRP bypass tools) to attempt to bypass the PayJoy lock.
- Develop, maintain, and execute comprehensive test plans, test cases, and test scenarios specifically focused on lock security, bypass attempts, and anti-tampering features.
- Simulate various attack vectors and user behaviors that could lead to a lock bypass.
- Document all testing activities, methodologies, findings, discovered vulnerabilities, and precise steps to reproduce in a clear, concise, and actionable manner using our bug tracking system (e.g., JIRA).
- Collaborate closely with Android developers, security engineers, and product managers to report vulnerabilities, discuss root causes, propose mitigation strategies, and verify the effectiveness of fixes.
- Provide detailed reports on test execution, vulnerability status, and overall lock security posture.
- Stay continuously updated on the latest Android security vulnerabilities, platform changes, rooting techniques, bootloader unlocking methods, custom firmware, and new bypass tools/techniques relevant to device locking mechanisms.
- Maintain and manage a lab environment with various Android devices, testing tools, and necessary infrastructure.
Requirements
- Bachelor’s degree in Computer Science, Cybersecurity, Information Technology, or a related field, or equivalent practical experience.
- 3+ years of experience in Quality Assurance, with at least 1-2 years specifically focused on mobile application testing on the Android platform, proven hands-on experience and a strong curiosity for attempting to bypass software-based locks, security mechanisms, or device restrictions.
- Strong understanding of the Android OS architecture, including bootloader, recovery mode, ADB (Android Debug Bridge), fastboot, system partitions, and security features.
- Familiarity with common Android rooting techniques, custom ROMs (e.g., LineageOS), and tools used for device modification (e.g., Magisk, Xposed Framework – for understanding potential attack vectors).
- Experience with Android debugging tools (e.g., Android Studio, Logcat, Wireshark/tcpdump for network analysis if relevant).
- Meticulous attention to detail, strong analytical, and problem-solving skills.
- Excellent written and verbal communication skills, with the ability to document technical issues clearly and effectively.
- Ability to work independently, manage priorities, and take ownership of assigned tasks in a fast-paced environment.
Benefits
- 100% Company-funded Health and dental and vision discount plan for employees and immediate family members.
- Life insurance.
- Phone finance, Headphone, home office equipment and wellness perks.
- 30 days of Christmas bonus
- 20 days paid Vacation
- 50% Vacation premium
- 13% Saving funds
- $2,000 MXN monthly grocery coupons
- $2,000 USD annual Co-working Travel perk
- $2,000 USD annual Professional Development perk
- Catered lunches
Top Skills
What We Do
PayJoy's mission is to deliver access to credit to the next billion people in emerging markets worldwide. Our unique mobile security technology gives customers the ability to afford their first smartphone on credit, using the phone itself as collateral, and then provides further access to credit to help weather life's unexpected financial surprises and climb the ladder of economic well-being. Founded in 2015, today PayJoy has reached millions of customers in a dozen countries around the globe, including Mexico, Brazil, Colombia, India, Kenya, and South Africa, and is on a strong growth path with support from major industry partners to bring credit to the next billion emerging consumers.







