Sr. Embedded Engineer (MicroPython/C/ARM/ESP32)

Coinkite Inc.; Toronto; Hybrid; CAD 100,000 - 170,000; Full time

Job summary

Coinkite is seeking a senior embedded engineer to own firmware delivery for its hardware products from prototype to production. You will work closely with hardware teams and manufacturing to ensure robust, secure firmware for small-screen devices.

The role emphasizes hands-on debugging, end-to-end responsibility, and strong ownership while aligning with the company’s Bitcoin hardware focus and shipping culture.

Qualifications

• Senior-level embedded experience, 10+ years or equivalent depth shipping real devices.
• Ability to move a product from early prototype to production without heavy supervision.
• Obsession with robustness, reliability, correctness, and recoverability.
• Comfortable working from home, managing your own time, and overlapping with Toronto business hours.
• Good judgment on small-screen UX and willingness to work with the team on company objectives.

Responsibilities

• Own embedded firmware delivery for new Coinkite hardware products and product revisions.
• Work close to hardware, datasheets, peripherals, displays, buttons, NFC/radio modules, power, and manufacturing realities.
• Build reliable user-facing firmware for small-screen security devices where correctness matters.
• Debug across firmware, hardware, tooling, manufacturing, and customer-support feedback loops.
• Make practical UX and engineering tradeoffs with founders, hardware engineers, and the rest of the team.

Skills

Embedded firmware

Ownership

Robustness

Low-level debugging

Team collaboration

Tools

MicroPython

C

ARM

ESP32

I2C

SPI

RS-232

Wi-Fi

Ethernet

Job description

Posted 2026-07-08

Employment type Full-time

Location / work mode Remote, Toronto business-hours overlap; Toronto, Ontario, Canada

Come build the hard things: small, robust, security-focused hardware products that Bitcoiners trust with real money. This is a senior embedded role for someone who can take ownership from a napkin sketch through firmware, board bring-up, debugging, manufacturing support, and shipping.

What you'll do

• Own embedded firmware delivery for new Coinkite hardware products and product revisions.
• Work close to hardware, datasheets, peripherals, displays, buttons, NFC/radio modules, power, and manufacturing realities.
• Build reliable user-facing firmware for small-screen security devices where correctness matters.
• Debug across firmware, hardware, tooling, manufacturing, and customer-support feedback loops.
• Make practical UX and engineering tradeoffs with founders, hardware engineers, and the rest of the team.

What we're looking for

• Senior-level embedded experience, ideally 10+ years or equivalent depth shipping real devices.
• Strong ownership: you can move a product from early prototype to production without heavy supervision.
• Obsession with robustness, reliability, correctness, and recoverability.
• Comfortable working from home, managing your own time, and overlapping with Toronto business hours.
• Good judgment on small-screen UX and willingness to work with the team on company objectives.

Technologies

• MicroPython, C, ARM, ESP32, and common microcontrollers.
• I2C, SPI, RS-232, Wi-Fi, Ethernet, TCP/IP, and websockets.
• Coding to datasheets and debugging at the edges of hardware behavior.
• Digital electronics, LCD/OLED display drivers, keyboard scanning, and low-level programming.

Nice to haves

• Board bring-up experience.
• Hardware and electronics design experience.
• Bitcoin hardware wallet or secure-device experience.

About Coinkite

Coinkite is a 10+ year-old profitable Bitcoin company. We focus primarily on hardware security devices, but also sell a number of specialized or novelty products related to Bitcoin. Our custom electronics are built in Toronto, Canada, and we sell direct from our web store to the world. Our customers count on us to protect their Bitcoin against theft, and we take that responsibility seriously.

We are nimble, small, and highly skilled. Our founders are well-known industry personalities and often speak at Bitcoin conferences. Coinkite's focus is always on new products and the R&D needed to ship world-class products in record time. We are makers who ship.

Our culture

We're a small but growing team where leadership and independence are encouraged. We hire people who care about the products we manufacture, and we're Bitcoiners — we love talking about Bitcoin and making hardware Bitcoiners love.