About PayJoy
PayJoy is a mission-first credit provider dedicated to helping under-served customers in emerging markets to achieve financial stability and success. Our patented technology for secured credit provides an on-ramp for new customers to enter the credit system. Through PayJoy’s point-of-sale financing and credit cards, customers gain access to a modern quality of life. PayJoy’s credit also allows our customers to seize opportunities as micro-entrepreneurs, and provide safety acts as insurance for tough times. Through our cutting-edge machine learning, data science, and anti-fraud AI, we have served over 18 million customers as of 2025 while achieving solid profitability for sustainable growth.
This role
The Product lock analyst - Android security is responsible for testing and helping maintain PayJoy's proprietary device locking technology against various bypass methods and tools, after every OS Over-The-Air (OTA) update, any update to our lock technology itself and any update to the in-market tools.Responsibilities
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- 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,

📌 Product Lock Analyst (Álvaro Obregón)
🏢 Payjoy
📍 Álvaro Obregón