Senior Software Engineer

Impinj•Seattle, WA

11d•$112,300 - $168,500•Hybrid

About The Position

Impinj is a leading RAIN RFID provider and Internet of Things pioneer. We’re inventing ways to connect every thing to the Internet — including retail apparel, retail general merchandise, healthcare items, automobile parts, airline baggage, food and much more. With more than 100 billion items connected to date, and multiple Fortune 500 enterprises around the world using our platform, we solve for a better understanding of our world. If it’s a thing, we’re working to connect it. Join Impinj and help us realize our vision of a boundless IoT— connecting trillions of everyday items to the Internet. You will be joining the RAIN RFID Reader Platform team where you will get to work on Firmware for ARM 64/32 bit Processors that will be used in our future RFID Reader models. The RFID Reader Platform team works closely with cross-functional teams, including Hardware, RF Modem, Cloud, and QA, to ensure seamless end-to-end enterprise 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

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