Senior Embedded Software Engineer

As a Senior Embedded Software Engineer, you will design, implement and maintain the embedded software that runs our software defined robots. You will work across the Linux application processor and the microcontroller layer, define how components communicate, and make sure the system is secure, reliable, scalable and maintainable by design. You will communicate with Principal Architects to shape architecture decisions and raising the quality bar through code reviews and tests.

Key Responsibilities

• Translate architecture requirements into robust, scalable and testable software.
• Design, develop and maintain embedded software in Rust and C++, including inter-process communication (IPC) on Linux Yocto OS for Raspberry Pi and STM32 series microcontrollers.
• Integrate with cloud and on-prem communication channels using communication protocols like gRPC, MQTT, HTTPS and others.
• Implement over-the-air (OTA) update mechanisms (e.g. A/B partitioning with RAUC, SWUpdate or Mender) and rollback strategies.
• Develop real-time firmware for STM32 MCUs in C++ and (bare-metal, FreeRTOS, Zephyr).
• Work with peripherals and buses such as RS-485, RS232, UART, USB and Ethernet, including interrupt-driven designs.
• Define and evolve interfaces using Protocol Buffers, with a disciplined approach to schema versioning and backward/forward compatibility.
• Design and implement inter-process communication on the Linux side (e.g. Unix domain sockets, shared memory, message queues, with clear latency, throughput and isolation guarantees).
• Design efficient, robust communication between the Linux host and MCUs, including framing, error detection, and compact serialisation (e.g. nanopb or similar).
• Establish a hardware root of trust, secure boot, signed firmware and images, and secure key storage (TPM, secure element, TrustZone or STM32 security features).
• Apply least privilege and process isolation (e.g. dedicated users, Linux capabilities, seccomp, namespaces, SELinux/AppArmor).