Zaijun Hao
Multimedia engineer crafting the invisible layers between play and display — obsessed with performance and extensibility.
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// journey
2024 — present
Android Multimedia Engineer @ Amazon
Video platform owner for Fire TV smart TV product lines. Shipping video & audio playback across Amlogic-based devices, taming tunnel playback, DRM, and third-party app compatibility at scale.
2021 — 2023
Media SDK Engineer @ ByteDance
Cross-platform media editor SDK powering TikTok and CapCut across iOS, Android, and beyond. Performance-critical video processing at billions-of-users scale.
C/C++
Java
Kotlin
TypeScript
Python
AOSP
MediaCodec
ExoPlayer
Frida
DRM
FFmpeg
Codec2