Senior Device Software Engineer

Sauron•San Francisco, CA

1d•$220,000 - $250,000

About The Position

The device platform is where Sauron meets the physical world. Every camera frame, every sensor reading, every alert a homeowner sees starts on hardware we built, running software we wrote, in a home we don't control. If the device isn't up, isn't streaming, or isn't telling the truth about its own state, nothing downstream matters. We are hiring someone to help own that foundation. Our devices live on real home networks, next to third-party cameras, through power cuts, firmware updates, and years of operation without anyone looking at them. They have to keep video flowing to on-device perception, to local recording, and to a homeowner's phone in real time, and recover on their own when any piece fails. You would help decide how the platform is built: what runs where, how components are isolated from each other's failures, how we update and observe a fleet we can't touch, and what "reliable" means in measured uptime, latency, and recovery time rather than hope.

Requirements

4+ years of professional experience developing device software for hardware products.
Experience with Linux on embedded/constrained systems, such as Yocto, or AOSP.
Experience writing C/C++ for Linux systems
Demonstrated ability to write multi-threaded, highly reliable code.
Hands-on experience building real-time video pipelines on Linux with GStreamer or FFmpeg/libav, and a working knowledge of RTSP/RTP and H.264/H.265 (GOPs, IDR frames, SPS/PPS).
Strong grasp of software lifecycle best practices: code reviews, version control, unit/integration testing, CI, and on-hardware validation.

Nice To Haves

Experience building custom embedded Linux distributions with Yocto
Experience with ARM Trustzone, and OP-TEE
Experience with WebRTC (ICE, SFUs such as LiveKit) and HLS delivery
Experience with hardware-accelerated video encode/decode on embedded SoCs (e.g. V4L2, Jetson, VA-API)
Familiarity with gRPC/protobuf service APIs and OpenTelemetry-based observability
Background contributing to or growing high-performance software teams.

Responsibilities

Develop from scratch and maintain embedded Linux platforms, from BSP to application level.
Work with electrical, mechanical, perception/ML, backend, and mobile teams to define architectures for new on-device software.
Drive features end-to-end through the full software lifecycle: design, implementation, validation, and production rollout.
Root-cause and resolve issues using remote fleet diagnostics, telemetry, and local hardware test platforms; define logging and observability standards.
Own the on-device video pipeline, from RTSP camera ingest to delivery for on-device perception, local recording, and low-latency WebRTC live viewing in our apps, and make it hold up on real cameras and home networks (reconnects, late-joiner keyframes, timestamp drift, and consumer isolation).