Android System Engineer (Camera Injection)

About Revolut

People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products — including spending, saving, investing, exchanging, travelling, and more — help our 55+ million customers get more from their money every day.

As we continue our lightning-fast growth,‌ 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work™. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution.

About the role

Our Technology team isn’t just one of the best in the industry, it’s one of the best in the world. And we’re proud of it. It’s our driving force; our engine. From building a new banking backend to creating an award-winning app, there’s nothing (and we mean nothing) our tech team can’t do.

We're looking for an Android Engineer with deep expertise in low-level Android (native libraries, kernel-level work) and Application Security (SELinux, Frida). You'll tackle advanced camera injection challenges - ensuring injected media mimics real hardware input and appears seamlessly across the native Camera app and any third-party apps using CameraX or Camera2 APIs.

If this is ‘so you’, you know where to find us.

What you'll be doing

• Creating an app or settings interface within the ROM that allows users to choose what type of media to inject into the camera: a static photo, a video file, or a network video stream (e.g., an RTSP stream)
• Ensuring the injected media replaces the live camera feed and is displayed in the preview of the default Camera app
• Making sure the injected media is recognised by any apps that use CameraX or Camera2 API, as if it were coming from the phone's physical camera
• Ensuring capturing the injected media using the camera's shutter button or automatic capture works the same way it would for a live camera feed
• Supporting testing and debugging to ensure proper functionality of camera injection
• Performing R&D on new methods of camera injection and techniques for detecting them across Android devices
• Becoming the foundational member of a new team aimed at focusing on developing secure Biometric Identification solutions

What you'll need

• Experience with Google's AOSP and custom ROM development
• Strong knowledge of Android Camera HAL and frameworks like CameraX and Camera2
• Experience in modifying the Android HAL and kernel-level programming.  
• Experience working with SE Linux and secure boot.  
• Experience in working with USB interfaces on Android and understanding of how to bridge data from external sources (e.g., OBS) to Android's camera system.  
• Expertise with device drivers, particularly related to cameras on Android.  
• Knowledge of custom kernel compilation for Android.  
• Knowledge of Android 10 system internals.

Nice to have

• Prior experience developing virtual camera drivers or working with media injection into Android camera systems.  
• Experience with rooted devices, custom recovery (TWRP), and debugging tools for Android hardware.  
• Familiarity with network streams (e.g., RTSP) and video streaming protocols, and how to handle them on Android to integrate external media sources into Android devices
• Experience with tools like gstreamer or FFmpeg for handling media streams

Building a global financial super app isn’t enough. Our Revoluters are a priority, and that’s why in 2021 we launched our inaugural D&I Framework, designed to help us thrive and grow everyday. We're not just doing this because it's the right thing to do. We’re doing it because we know that seeking out diverse talent and creating an inclusive workplace is the way to create exceptional, innovative products and services for our customers. That’s why we encourage applications from people with diverse backgrounds and experiences to join this multicultural, hard-working team.