Key skills

C programmingC++ programmingPythonEmbedded LinuxMicrocontrollersBootloadersDevice treesDevice driversFirmware image build systemsYoctoBuildrootDebugging with logic analyzersDebugging with GDBHardware interfaces SPIHardware interfaces UARTHardware interfaces I2CHardware interfaces GPIOLow-level programmingLinux Workstation developmentCI/CD pipelinesAutomated testing frameworksC++CUnit TestingCI/CD

About this role

Impinj is a leading RAIN RFID provider and Internet of Things pioneer. They are seeking a Senior Software Engineer to join the RAIN RFID Reader Platform team, where the engineer will design and develop embedded software for ARM processors and collaborate with cross-functional teams to enhance enterprise solutions.

Responsibilities:

Design, develop, and maintain embedded software on ARM 64/32 bit processors and microcontrollers – from early bootloaders to modern C/C++ Linux applications
Own key aspects of new hardware platform bring-up, including driver development, peripheral integration, and board-level diagnostics
Contribute to architecture and design reviews, ensuring code quality and software scalability
Optimize code for performance, memory usage, and power consumption in resource-constrained environments
Troubleshoot, debug, and resolve issues across embedded systems
Write and maintain clear, detailed documentation for software architecture, design, and code
Conduct unit testing and ensure embedded systems meet functional and performance requirements
Collaborate with embedded, QA, Factory Test, and Hardware teams to improve overall organizational success
Mentor junior engineers and contribute to the professional growth of the embedded software team
Continuously learn and grow with a small but highly effective team committed to improving processes and solutions

Requirements:

Bachelor's degree program in Computer Science, Computer Engineering, Electrical Engineering, or a related field
5+ years of progressive software development experience with a proven track record of delivering high-quality embedded solutions
Expertise in C and modern C++ programming for embedded systems
Proficiency in Python
Experience with Embedded Linux and microcontrollers – including bootstrapping SoCs, device trees, device drivers, and firmware image build systems (e.g. Yocto, Buildroot, or similar)
Experience debugging with tools such as logic analyzers and GDB
Strong experience with Embedded Linux and microcontrollers
In-depth knowledge of hardware interfaces such as SPI, UART, I2C, GPIO
Solid understanding of hardware/software interaction and low-level programming
Experience developing on Linux Workstation
Familiarity with CI/CD pipelines and automated testing frameworks