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Ledger Logo Ledger · IT - Software Development

Typescript software engineer - coin integration

France, Paris 800.00 - 1500.00 EUR / Month · Job Posted March 20, 2026
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Job Description

We are seeking a motivated and curious JavaScript/TypeScript developer to join our team for a 6-month internship. This is a unique opportunity to grow as a software engineer, learn how blockchain integrations are built and maintained, and contribute directly to Ledger’s products.

Job Responsibility

  • Contribute to blockchain integrations by helping integrate and maintain multiple protocols (EVM, Bitcoin, Solana, Polkadot, Cosmos, etc.) within the Ledger ecosystem
  • Build and improve connectivity solutions that allow Ledger products to interact seamlessly with the broader Web3 ecosystem (Wallet API, Wallet Connect, Dapp integrations)
  • Develop your engineering skills through hands-on work in JavaScript and TypeScript, using frameworks such as Node.js and React, while applying clean code and modular design principles
  • Collaborate with multidisciplinary teams, participating in agile ceremonies, code reviews, and cross-functional discussions to understand how software projects are delivered at scale
  • Learn blockchain from the inside, discovering how various protocols operate and connect with hardware wallets

Requirements

  • Currently enrolled in a Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field
  • Strong programming skills in JavaScript or TypeScript, with experience in Node.js or React (from coursework or personal projects)
  • Eagerness to learn about blockchain, Web3, and modern software practices
  • Good communication and teamwork skills, with the ability to collaborate in a dynamic, fast-paced environment
  • Interest in software craftsmanship, writing maintainable, well-structured code and exploring functional programming concepts
  • Familiarity with agile workflows and openness to feedback and iteration

What we offer

  • Social: Frequent social events, snacks and drinks
  • Transportation allowance: Ledger offers a commuter allowance to contribute to your preferred means of transportation
  • Lunch vouchers: Ledger offers a meal allowance with Swile
  • Vacation: 1 day off for every full month of work, in addition to national holidays
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