Typescript Software Engineer - Coin Integration

We’re a team of experts pushing the limits of what’s possible, united by our common goal to unlock true freedom through digital ownership, making technology accessible for all. We believe in a world where users, creators and enterprises manage their value with ownership and freedom. Our curiosity drives us to innovate, empowering individuals on a global scale. We believe change is constant and our team moves forward as one, with a culture of problem-solving where every employee is empowered and supported to challenge tradition and create solutions. Our mission is simple: to make self-custody accessible and give people the keys to their own financial futures. If you want to make a true impact, we want you to join us at Ledger. At Ledger, we’re proud to be the global platform for digital assets and Web3, with over 20% of the world’s crypto assets secured through our Ledger devices. With our headquarters in Paris, and offices in Vierzon, Grenoble, Montpellier, London, Portland, Geneva, Zurich and Central Singapore, we have a team of around 600 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 7\.5 millions units already sold in 200 countries. **Internship duration: 6 months** **The team** As a **Coin Integration Intern** , you’ll join a team at the heart of Ledger’s mission: integrating and maintaining the blockchains that power our ecosystem. The Coin Integration team ensures that Ledger devices and applications support a wide range of protocols, from Bitcoin to Solana, Polkadot, and Cosmos. You’ll work closely with experienced engineers to connect hardware, software, and decentralized networks, gaining hands-on experience with technologies shaping the future of Web3\. **What You'll Be Doing** 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.- **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 — no prior blockchain experience required, only curiosity. **What We're Looking For** * 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. **Benefits** At Ledger, we are dedicated to continually investing in our employees which is why we offer more than just salaries; we provide comprehensive compensation packages that include a wide range of benefits. Here are some of the benefits you can look forward to: * 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 * Compensation: €800 - €1,500 a month For regionally specific benefits, your Talent Acquisition contact will be able to provide you with more information. *We’re committed to building an inclusive hiring process. If you need any adjustments or accommodations, just let us know, we’ll do our best to support you.*