Sr. Firmware Test Engineer

Proto is accelerating the world's transition to an open economy with products that increase access and independence for everyone. We're building Bitkey, a simple and safe self-custody bitcoin wallet that will put customers in control, as well as hardware and software that will help decentralize bitcoin mining and enable new and innovative use cases for bitcoin mining. We're developing these products in the open - you can read more about them at bitkey.build and mining.build. Within Proto, our Bitcoin Products team delivers the product and go-to-market strategy, software, firmware, and custom silicon needed to make Bitkey and our ambitious mining initiatives a reality. Come build the future of money with us!

The Role

You will:

• Focus on ensuring the hardware and embedded software for our mining products are working as intended.


• Work closely with electrical engineers and manufacturing test engineers to conduct failure analysis on prototypes and EVT units


• Work closely with mechanical and firmware engineers to test the reliability and performance of our mining products


• Work closely with our tech ops team to conduct analysis on defects reported in the field


• Define test cases and comprehensive test plans for our mining products.


• Create software tools that can automate the process of validating hardware features and firmware used by the device


• Travel to factory sites and testing facilities for up to 25% of the year

You have:

• 5+ years of relevant professional experience in electronics and/or software industries.


• Understanding of product requirements and the ability to create testing strategies and platforms to ensure product compliance.


• Experience with electronics communications protocols (e.g. SPI, UART, I2C, USB)


• Experience with debugging tools (e.g. JTAG, SWD, GDB integrations)


• Experience working with embedded Linux.


• Experience with writing test cases and test plans.


• Excellent communication skills and empathy for team members and customers


• Experience using Python, Go, C, or Rust in automated testing, build systems, or device firmware communication


• Degree in CS, CE, EE, or equivalent practical experience

Nice to have:

• Knowledge of Bitcoin mining


• Experience with oscilloscopes, logic probes, logic analyzers, and digital multimeters


• Experience with tools used for automating API testing


• Experience with tools used for web front-end testing

We're working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and "fair chance" ordinances.

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we're doing to build a workplace that is fair and square? Check out our I+D page.

While there is no specific deadline to apply for this role, U.S. roles are typically open for an average of 55 days before being filled by a successful candidate. Please refer to the date listed at the top of this job page for when this role was first posted.