Remote Senior Embedded Engineer — Secure Hardware (ESP32/ARM)

Coinkite Inc.; Canada; On-site; 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

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.