Amazon's Silicon & Systems Group builds the custom Arm-based SoCs and low-level software that power Fire TV and Amazon's streaming media and smart-TV devices. We are looking for a Software Development Engineer II to join our Content Protection & DRM team.

In this role you will design, implement, and ship the security-critical software that protects premium content on our devices — including industry DRM systems (Widevine, PlayReady, FairPlay) and HDCP link protection (Transmit and Receive). You will write trusted-application (TA) and secure-world code running in a TrustZone/OP-TEE Trusted Execution Setting, integrate cryptographic key provisioning, and work closely with silicon, multimedia, and streaming-partner teams to take features from architecture to certified production.
This is a hands-on engineering role with high ownership. Your code runs at the lowest, most security-sensitive layers of the stack, and directly enables customers to watch the content they love in the highest available quality.

Key job responsibilities
- Design, implement, test,



and maintain DRM and content-protection software (Widevine, PlayReady, FairPlay, HDCP 1.x/2.x Tx & Rx) in C/C++ for embedded Arm platforms.
- Develop trusted applications and secure-world components for a TrustZone/OP-TEE TEE, including applied cryptography (AES, RSA, ECC, SHA) and secure key handling.
- Implement and validate secure device key provisioning and factory/development provisioning flows.
- Integrate DRM stacks with the media pipeline and certify content playback with streaming partners (e.g., Prime Video, Netflix, YouTube).
- Debug complex, cross-layer issues spanning firmware, kernel drivers, TEE, and user space; analyze and resolve performance and security defects.
- Participate in security architecture reviews, threat modeling, code reviews, and compliance & robustness certification.
- Write clear design documents and contribute to team engineering standards.

A day in the life
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