Lead Embedded Software Developer

ABOUT THE PROJECT

Within this role, you will be the foundational technical leader for our rapidly growing portfolio of Amazon Sidewalk projects. We are not just building standard applications on top of ready-made APIs; we architect advanced, low-level system integrations, performing extreme memory and power optimizations to bring robust wireless capabilities to diverse custom hardware ecosystems. You will act as our internal Subject Matter Expert, driving the architecture for massive IoT rollouts, such as large-scale sensor networks with strict multi-year battery life constraints, and engineering complex multi-protocol integrations. You will supervise distributed development teams, ensuring our end-to-end solutions meet extreme constraints for power, memory, and reliability.

YOUR ROLE

• Acting as the primary Subject Matter Expert (SME) for Amazon Sidewalk and Sub-GHz communications across the company.
• Supervising multiple complex embedded projects, ensuring architectural integrity and optimal hardware utilization.
• Working deeply with complex wireless stacks to optimize their footprint and developing custom Platform/Hardware Abstraction Layers (PAL/HAL) for novel silicon implementations.
• Analyzing incoming client needs to provide accurate effort estimates, technical feasibility studies, and architecture blueprints for upcoming engagements.
• Resolving complex hardware-level design challenges (e.g., pin multiplexing, inter-processor communication on multi-core MCUs, and custom non-volatile memory allocation).
• Advising clients and internal teams on device qualification processes and manufacturing provisioning workflows.
• Performing complex code reviews, unit testing, and leading advanced debugging sessions.

REQUIREMENTS

• 8+ years of experience in Embedded Development and Systems Architecture.
• Expert-level proficiency in C programming for highly constrained embedded systems.
• Deep, fundamental understanding of the under-the-hood mechanics of wireless communication, specifically in the sub-GHz range and LoRa/FSK modulation.
• Extensive experience with real-time operating systems (e.g., FreeRTOS, Zephyr) as well as bare-metal architectural design.
• Strong understanding of diverse microcontroller architectures (e.g., ARM Cortex-M series or similar) and hardware interfacing (SPI, I2C, UART).
• Proven ability to perform extreme memory optimization and ultra-low power profiling for battery-operated IoT devices.
• Experience with embedded security practices, including hardware-level cryptography (PKA, elliptic curves).
• Experience with debugging tools (e.g., JTAG, GDB, JLink) and the ability to read and navigate hardware schematics.
• Familiarity with version control systems (Git) and Agile tracking tools (Jira, Confluence).
• B2+ level of English with strong technical communication skills.

NICE TO HAVE

• Previous direct experience integrating and porting complex wireless SDKs (like Amazon Sidewalk, LoRaWAN, or Thread) to custom hardware platforms.
• Familiarity with modern sub-GHz transceivers and highly integrated System-on-Chip (SoC) solutions.
• Experience with modern embedded build systems (CMake) and CI/CD pipelines (e.g., GitHub Actions).
• Familiarity with Python for developing test automation and helper scripts.
• Knowledge of advanced manufacturing provisioning processes (e.g., utilizing Hardware Security Modules, secure key injection, and secure serial numbering).
• Experience with concurrent multi-protocol radio scheduling.
• Experience working with AWS IoT Core for Sidewalk.
• Experience in Active Object design pattern and state machines (FSM, HSM).