Senior Front-end Engineer - Platform

About the Position

We are seeking a Senior Front-end Engineer to join our Platform Team in Paris, France, focusing on architecture, micro-frontends, and developer experience.

Responsibilities

• Architecture & Monorepo Management: Set and uphold the engineering standards for our large-scale monorepo, Ledger Wallet. Drive improvements in dependency management, build performance, and structural organization so the codebase scales cleanly with dozens of contributors.
• Micro-Frontends & Scalability: Work on shaping the technical strategy for decoupling our architecture by architecting automated CI/CD workflows and micro-frontend approaches that enable independent team deployments on both Mobile and Desktop Platforms.
• Developer Experience (DX): Design and build internal tooling, scripts, and CLIs that remove friction for other developers. If a process is slow or manual, your job is to automate it.
• Tech Stack Governance: Maintain the health of our core stack (React, React Native, Electron, TypeScript). Handle upgrades, minimize technical debt, and enforce best practices across the organization.
• Mentorship & Advocacy: Act as a technical referent. Promote engineering standards, conduct high-level code reviews.

Requirements

• Experience: 6+ years in software development with significant experience in complex Frontend architectures.
• Stack Mastery: Deep proficiency in TypeScript and React. You understand how React works under the hood (reconciliation, rendering, performance).
• Platform Mindset: Proven experience managing Monorepos (using tools like Nx, Turborepo, Lerna, or similar) and configuring build tools (Webpack, Rspack, ESBuild, Metro, Re.Pack).
• Mobile & Desktop: Experience with React Native and/or Electron is highly critical for this role, as you will impact both platforms.
• Architecture: Practical experience implementing Micro-frontends or modular architectures at scale.
• CI/CD Ops: Familiarity with configuring pipelines (GitHub Actions, CircleCI) and optimizing build/test parallelization.
• Soft Skills: You are empathetic to the struggles of other developers and have a "service-oriented" mindset toward internal teams.

Nice to Have

• Experience with native modules in React Native.
• Experience in Web3 topics and technical stacks.
• Active contributor to Open Source projects.

We Offer

• Flexible work options: Our hybrid policy allows employees to work from home up to 3 times per week.
• Health & Wellness support: Health and Life Insurance.
• Financial growth opportunities: Employees can become shareholders in Ledger as well as other financial benefits depending on your country of work.
• Commuter allowance: Ledger offers a commuter allowance to contribute to your preferred means of transportation.
• Learning & Development: A comprehensive suite of training solutions providing a personalized learning experience for every employee.

About the Company

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 million units already sold in 200 countries.