Senior Software Engineer - Ledger Connectivity



Software Engineering
Paris, France
Posted on Friday, July 14, 2023
We're making the world of digital assets accessible and secure for everyone. Join the mission.
Founded in 2014, Ledger is the global platform for digital assets and Web3. Over 20% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in UK, US, Switzerland and Singapore, Ledger has a team of more than 900 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 6 millions units already sold in 200 countries.
At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust and Transparency. Hear from our employees how they shape the work we do here.

Your mission

  • shape the future of our Web3 platform by contributing to the challenge of the ambitious Ledger Connectivity Team by holding up tools and libraries such as the Wallet API, Wallet Sync and Connect Kit. Those libraries are consumed both internally by Ledger and externally by developers crafting Live apps integrated inside Ledger Live
  • Immerse yourself in this crucial role, playing a vital part in making Ledger a key contributor to drive the global digital assets and cryptocurrency ecosystems
  • Bring your expertise in the JavaScript and Web3 ecosystems to innovation and solve complex and challenging problems. Your knowledge of modern JavaScript practices and comprehension of state managers and asynchronous handling in JavaScript will help streamline our services and ensure optimal performance
  • Besides implementing solutions, you will be involved in working with cross-functional teams, helping on the development and optimisation of our Blockchain architecture, and fostering a functional programming approach to create an efficient, maintainable and side-effect-limited codebase

What we're looking for

  • We're looking for a professional who's not just interested in 'writing code,' but also passionate about the broader JavaScript ecosystem, blockchain, and is excited about the impact of decentralized systems on the world.
  • Expertise in the JavaScript ecosystem and a passion for Web3
  • Experience with web3 integration libraries such as Ethers.js or
  • Proficiency in modern JavaScript practices, including state managers and asynchronous handling in JavaScript
  • Knowledge of runtime validation using tools like ZOD
  • An interest in or experience with functional programming (In JavaScript or any Functional Programming language)
  • Experience with React
  • A good grasp of monorepos (we use turborepo toolings) and CI tools such as GitHub Actions
  • Strong interest and experience of Blockchain architecture
  • A strong interest in decentralied systems
  • A service-oriented mindset with an engagement to delivering high-quality solutions
  • Passion for coding and the Typescript ecosystem
  • Proficiency with Solidity would be a plus, although there won't be a requirement to use this in the role

What’s in it for you?

  • Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow.
  • Flexibility: A hybrid work policy.
  • Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
  • Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage.
  • Well-being: Personal development, coaching & fitness with our dedicated partners.
  • Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days.
  • High tech: Access to high performance office equipment and gadgets, including Apple products.
  • Transport: Ledger reimburses part of your preferred means of transportation.
  • Discounts: Employee discount on all our products.
We are an equal opportunity employer for all without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age.
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