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 millions units already sold in 200 countries.

The team

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.

What you’ll be doing

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.

You won’t just build features - you’ll help define what’s worth building and how to deliver it effectively :

• 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 vs ship

• Mentoring mindset with strong communication skills

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:

• 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 personalised learning experience for every employee.

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.