Web3 Developer Open Source Jobs in France

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 15% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in the UK, US, Switzerland and Singapore, Ledger has a team of more than 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 5 millions units already sold in 180 countries. At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust and Transparency. Have a look at our Origins video here. At Ledger, we're on a mission to secure the world of digital assets while driving innovative blockchain solutions forward. As an intern on our Coin Integration Team, you’ll have a unique opportunity to gain hands-on experience in blockchain integration. If you’re excited about learning the inner workings of blockchain protocols, building secure connections between hardware and software, and working with cutting-edge technologies, this internship is for you!Duration: 6 months Start date: February / April 2025

The mission

• Assist in Cross-Team Blockchain Integration : Learn how various blockchain protocols (EVM, BTC, Solana, Polkadot, Cosmos, etc.) are integrated into the Ledger ecosystem and help develop new features or improvements.
• Support Connectivity Solutions : Collaborate with the team to ensure seamless interactions between Ledger products and the broader ecosystem. Contribute to Wallet Connect integrations, Dapp integrations in Ledger Live, and Wallet API enhancements.
• Learn JavaScript & Functional Programming : Hone your skills in the JavaScript ecosystem (TypeScript, Node.js, React) and get hands-on exposure to functional programming principles that enable clean, scalable code.
• Collaborate with Experienced Engineers : Work closely with senior engineers and cross-functional teams (product, QA, security) to troubleshoot issues, implement improvements, and maintain high-quality standards.
• Embrace an Agile Mindset : Participate in daily stand-ups, sprint planning, and retrospectives, gaining practical experience in agile workflows and CI/CD processes.

What we're looking for

• Enthusiasm for Technology : A passion for coding, problem-solving, and discovering new ways to enhance blockchain integrations and connectivity features.
• Basic JavaScript Knowledge : Familiarity with JavaScript or TypeScript, along with any experience (projects or coursework) in Node.js or React.
• Willingness to Learn Blockchain : Interest in understanding blockchain fundamentals and Web3 technologies; prior knowledge is a bonus but not required.
• Team Spirit : Strong communication skills and the ability to collaborate effectively in a diverse, fast-paced environment.
• Curiosity About Functional Programming : Openness to exploring functional programming and modern design patterns to develop robust software solutions.
• Agile Curiosity : Basic awareness of agile methodologies, with the desire to actively participate in a collaborative, iterative workflow.
• Bonus points : Exposure to Web3 or Dapp Development (Hands-on experience or coursework in blockchain concepts, smart contracts, or decentralized applications) OR Open-Source Contributions (Involvement in open-source projects, coding communities, or hackathons)

What's in it for you?

• Flexibility: A hybrid work policy
• Social: Frequent social events, snacks and drinks
• High tech: Access to high performance office equipment and gadgets, including Apple products
• Transport: Ledger reimburses 75% of your preferred means of transportation
• Food: We offer lunch vouchers with Swile
• Vacation: 1 day off for every full month worked

We are an equal opportunity employer for all without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age#LI-hybrid #LI-RDH