As an experienced Senior Software Engineer specializing in embedded security and real-time firmware, you will design, implement, and maintain the embedded software for a physical tamper-detection system detecting and responding to physical intrusion on PCBs. Working with low-power MCUs, you will build the sensing, boot-security, and tamper-response software that protects cryptographic material and mission integrity.
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Responsibilities
- Develop and maintain real-time firmware in C/C++ on ARM Cortex-M class MCUs under Zephyr RTOS, optimized for ultra-low-power, always-on operation in battery-backed power domains.
- Implement secure boot chains (e.g., MCUboot), signed firmware images, and secure update mechanisms ensuring only authentic, unmodified code can run.
- Design and implement sensor acquisition pipelines: ADC interfacing, sampling strategies, and driver development for analog and digital sensor front-ends.
- Develop tamper-response logic: event latching, tamper-evident logging, anti-rollback, secure debug control, and lifecycle-state enforcement.
- Perform SoC/MCU platform bring-up on NXP-based and NVIDIA-based platforms: BSP integration, boot-chain validation, peripheral enablement, driver integration, and platform debugging.
Requirements
- 5-8 years of professional embedded software development experience, with firmware shipped through integration, test, and production, preferably in defense, aerospace, or security-critical products.
- Strong C/C++ on ARM Cortex-M class microcontrollers; solid grasp of real-time constraints, interrupt-driven design, and memory-constrained development.
- Hands-on experience with Zephyr RTOS or a comparable RTOS (FreeRTOS, ThreadX) and willingness to specialize in Zephyr.
- Demonstrable DSP and sensor signal-processing experience, including digital filtering, spectral analysis, feature extraction, and event detection in noisy environments.
- Experience implementing embedded security features: secure boot, signed firmware updates, hardware root of trust, key provisioning and zeroization, and encrypted communications.
Education and Certification Requirements
- BSc or MSc in Electrical/Electronic Engineering, Computer Science, Embedded Systems, or a related discipline.
- Exposure to cryptographic-module or product security certification work is a strong plus.
