Application Firmware Developer

2 days ago

Prague, Hlavní město Praha, Czech Republic SatoshiLabs Full time 80,000 - 120,000 per year

We're Trezor, a leading company in crypto security, that has pioneered the hardware wallet industry. As an Application Firmware Developer, you'll help us develop firmware that runs on thousands of Trezor devices all over the world. Basically, our products put people at ease knowing their digital assets are safe. Your job here will consist of providing new features, fixing bugs, and solving difficult technical problems. Along the way, you'll gain valuable insights into the practical application of cryptography.

We picture you as a skilled developer who has a background in Python programming and has completed at least some side projects in Rust. A solid understanding of C will also be necessary.

Together, we will bring new features to our devices (including our flagship Trezor Safe 7) and ensure smooth delivery of future products. Sounds like something for you?

What you'll do

  • Work on Trezor Core - firmware for Trezor written in Micropython and Rust

  • Join a team of 5 developers and collaborate closely with Embedded, R&D, Design, and Trezor Suite teams

  • Your day-to-day tasks will consist of:

    • writing reusable, testable, and efficient code

    • working on new features for our customers (e.g. new wallet backup solutions, chains support, Bitcoin miniscript, etc.)

    • improving the codebase, code review

  • Since our work is open source, you can have a look at our GitHub to see what we're currently working on

Our stack

  • Languages: async Python (MicroPython, to be precise), Rust, and C

  • Development tools: nix-shell, uv, pytest and others (simply check out our nix and uv setup)

  • CI: GitHub Actions

About you

  • You have 5+ years of programming experience

  • You've spent at least 2 years programming in Python

  • You have a good knowledge of C

  • You have 1+ year of experience with Rust (professional or personal projects)

  • You're well familiar with Git

  • You understand the importance of code testing and have previous experience with CI

  • We'll also appreciate it if you know the basic principles of cryptography

  • Experience with embedded development is an advantage

What we offer

  • Be a part of a brand that has revolutionized the crypto industry more than once

  • Option to receive part of your compensation in bitcoin

  • Autonomous development - We do not work in clear assignment/delivery model. While we do have priorities and backlogs, no assignment is pixel perfect and you are the person to figure out the last mile. We also encourage people to tell us what we should do next.

  • Flexible working hours, as well as the possibility of working from home

  • Budget for professional growth (training, courses, and workshops of your choice)

  • Friendly, open culture with regular company events and get-togethers

  • Renovated offices with a gym, football table, billiards, PlayStation, and 3D printer

  • Other perks: MultiSport card, company mobile tariff, free parking, and more

Interested? We'd love to hear from you. Just send us your CV and cover letter – we usually get back to applicants within a week.

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