Senior Frontend Engineer

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.

You’ll join the E‑commerce Engineering team, responsible for everything customers experience on ledger.com. This team owns the full customer journey – from discovery to checkout – working across a modern stack (Next.js, Shopify, Contentful, Vercel) to deliver high‑performing, conversion‑focused experiences at scale. We work in a fast‑paced, product‑driven environment, shipping frequently and optimising continuously for performance, SEO, and conversion.

As a Senior Frontend Engineer, you’ll play a key role in shaping and delivering the web experience used by millions of customers worldwide. This is a hands‑on role with strong ownership: you’ll lead complex projects end‑to‑end, contribute to technical direction, and elevate the team through high standards and mentorship.

• Own delivery end‑to‑end.
• Lead development of high‑impact features from ideation to production.
• Make pragmatic trade‑offs to balance speed, quality, and scalability.
• Ship frequently and iterate based on real user data.
• Drive technical excellence: write clean, maintainable, and performant code (TypeScript, React, Next.js); improve architecture, scalability, and reliability of the platform; maintain a high bar for testing, monitoring, and code quality.
• Shape solutions, not just code: collaborate with Product, Design, and Marketing to define the right problems; contribute to technical decisions with a strong product and business mindset; focus on outcomes like conversion, performance, and user experience.
• Elevate the team: mentor engineers through code reviews, pairing, and feedback; share knowledge and promote best practices across the team; help drive a culture of ownership, pragmatism, and continuous improvement.
• Collaborate across functions: work closely with stakeholders to plan, estimate, and deliver work; communicate clearly on progress, risks, and trade‑offs; contribute to a strong, transparent engineering culture.

What we're looking for:

• Strong experience building production applications with JavaScript/TypeScript and React.
• Experience with Next.js or modern SSR frameworks.
• Proven ability to own and deliver projects end‑to‑end.
• Comfortable leveraging AI‑assisted development tools (e.g. code generation, debugging, documentation, and exploration) to improve productivity, while applying strong engineering judgment to validate outputs and maintain high quality standards.
• Strong product mindset – focused on user impact and business outcomes.
• Experience in A/B testing and data‑driven optimisation.
• Solid understanding of performance, SEO, and web best practices.
• Pragmatic approach to engineering – knowing when to optimise versus ship.
• Mentoring mindset with strong communication skills.

Benefits:

• 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 and may receive additional benefits depending on your country of work.
• Commuter allowance – Ledger offers a commuter allowance to support your preferred means of transportation.
• Learning & Development – a comprehensive suite of training solutions providing a personalised learning experience for every employee.

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.