Payjoy
Senior Software Engineer - Android Systems & Security
San Francisco, CA
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hirly's read of this role
- Role family
- Engineering
- Seniority
- Senior
- Country
- US
- Work mode
- On-site / unstated
- First seen by hirly
- 3 Sept 2026
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the posting
About PayJoy
PayJoy, a Public Benefit Corporation, 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 card offerings, customers gain access to a modern quality of life. PayJoy’s credit also allows our customers to seize opportunities as micro-entrepreneurs, and 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
This is not a conventional Android app development role (building applications for the Play Store) . We are seeking a specialized systems engineer focused on the heart of the operating system: AOSP (Android Open Source Project) and the TEE (Trusted Execution Environment) .
In this role, you will bridge the gap between high-level Android features and low-level hardware integration, ensuring our proprietary security mechanisms—which protect our assets at the OS level—are robust, performant, and tamper-proof .
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