Ledger

Blockchain Engineer

• Drive the blockchain integration and support strategy for Ledger Wallet Embedded Applications.
• Participate in product and technical assessments to integrate new blockchains, coins, and tokens in Ledger Wallet.
• Create detailed, technical, and actionable product specifications to integrate new blockchains, coins, and tokens in Ledger Wallet.
• Facilitate the integration of new blockchains, coins, and tokens made by internal and external parties.
• Provide vision and direction to the engineering team and internal stakeholders throughout the project management.
• Actively monitor blockchain evolutions to ensure high-quality maintenance.
• Monitor our competitors and overall industry evolutions that will impact our blockchain integration roadmap.
• Attend and participate in blockchain and crypto-related conferences.
• Work closely with the Operating System, Embedded Applications, and Security teams to ensure successful blockchain launches.

Product Manager – Blockchain, Embedded Applications

Frontend Engineer

• 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.

Typescript Software Engineer – Coin Integration, Internship

Engineering Manager

• Lead your team and meet regularly with your direct reports to provide frequent feedback on their work
• Drive recruitments, performance assessments, trainings and career development for your team
• Help individuals set goals and improve their practices, to ensure employee growth and meet retention goals
• Drive projects from end-to-end, implementing best-in-class engineering practices
• Participate in the sprint delivery, monitor Tech' metrics, and be accountable for the quality of deliverables
• Consistently come up with innovative solutions integrating and encourage innovative thinking from others
• Collaborate closely with Delivery Managers, Product Owners and Designers to assess feasibility, provide technical recommendations, and help estimate and plan
• Delegate effectively, ensuring tasks are completed as specified without micromanaging
• Communicate clearly on expectations and ensure practices are followed to meet Ledger’s quality bar
• Embrace a positive “can do” attitude, and be a model for others
• Be proactive in your communication and be a well-identified link with other teams
• Track progress/risks/issues and communicate them to the appropriate stakeholders

Engineering Manager – E Commerce

Security Engineer

• Research cutting-edge offensive security techniques.
• Develop reverse engineering techniques and tools for Integrated Circuits manufactured on modern process nodes.
• Develop attacks for the chips you studied based on reverse engineered information.
• Formalize and generalize the attacks you find, and propose systematic ways to mitigate them or altogether render them impossible.
• If time permits, submit your findings for publication in academic journals or specialised conferences.

Hardware Security Researcher – Internship

• You’ll take part in the Embedded Security team.
• Research new techniques to improve the efficiency of current automated tools used by the team.
• Contribute to security reviews of new embedded applications or features.
• Develop new fuzzing harnesses or improve the existing ones.
• Present your work to the engineering teams.

Software Security Engineer, Internship

Full-stack Engineer

• Develop and maintain our design system in React and React Native.
• Help define best practices, guidelines, and documentation for UI components, accessibility, and performance.
• Collaborate with our designers to translate Figma designs into reusable, high-quality components.
• Ensure consistency across platforms (web & mobile) by establishing a robust design token framework.
• Advocate for accessibility and ensure compliance with WCAG and other accessibility standards.
• Mentor engineers and contribute to team growth by providing technical guidance and code reviews.

Software Engineer – Design System, Internship

• Integrate the development team and actively contribute to the development and maintenance of internal tools (order management, production, traceability)
• Work on various technical and functional issues, leveraging Electron, Typescript, and React technologies
• Collaborate with various teams to understand their needs, analyze business processes, and develop suitable software solutions
• Participate in the full development lifecycle, including team meetings (planning, reviews) and presenting your work during sprint review meetings
• Potentially contribute to the production of technical and functional documentation.

Internship – Software Engineer

Financial Planning and Analysis

• Act as the primary financial point of contact for the B2B | G&A leadership teams.
• Lead the B2B | G&A budgeting, forecasting, and long-range planning cycles.
• Take full ownership of the B2B P&L (Revenue, Margin, Costs) and G&A expenses.
• Conduct in-depth What-If analysis to evaluate strategic investments, product roadmaps and operational efficiency initiatives.
• Lead the analysis and reporting of group-wide staff costs and recruitment planning.
• Co-own month-end financial closing FP&A tasks.

Senior FP&A Analyst

Sales

• Be responsible for driving growth of Ledger Enterprise in the EMEA region
• Recognize prospect pain points, and through understanding the Ledger Enterprise product offering, advise how Ledger Enterprise can solve them
• Work collaboratively with entire Sales, Marketing & Product teams
• Identify new businesses and contacts through lead generation, research, and data gathering - and craft messaging to drive prospects to our website, conferences, and webinars
• Contribute to sales goals aligned with the broader company objectives by engaging in negotiations and sales pitches
• Foster close relationships with other sales personnel to fuel team success and professional growth
• Serve as the voice of the customer, delivering insightful feedback to the product team to guide product enhancements and innovation

Institutional Sales Manager

Ecommerce

• Work as part of an agile delivery team practising CI/CD
• Write high-quality, performant, secure and maintainable code
• Constantly level up the team in writing clean code through teaching and mentoring
• Champion best practice software craftsmanship through examples and good reviews
• Occasionally speak and present at sprint demos and Web CoP events
• Translate technical concepts for non-technical people
• Work across multiple code repositories with an e-commerce and Web3 focus
• Create and review feature blueprints for effective design, planning and forecasting
• Own end-to-end customer experience and various systems on the e-commerce platform

Staff Software Engineer, E-commerce

Customer Support

• First point of contact between customers and Ledger, providing quick and efficient technical support and ensuring customer satisfaction
• Handle requests related to Ledger products and services, including transaction issues, connection troubleshooting, RMAs and more
• Ensure customer satisfaction & reply to day-to-day customer requests
• Write clear and well-structured documentation on service tickets and follow up to ensure resolution
• Identify recurring support trends and product performance issues, providing feedback to product team
• Suggest improvements to knowledge base articles, FAQs and other support documentation to enable customer self-service
• Be involved in support escalations to ensure timely resolution according to SLAs on technical products
• Communicate and work effectively with R&D, Legal, and Marketing teams
• Participate in external events around the world
• Continuously learn about crypto and Ledger’s products

Customer Support Agent

• Work 100% on Open Source projects gathered in the monorepo ledger-live and maintain/develop the Ledger Live stack (mobile and desktop) and its ecosystem
• Participate in modularization effort by contributing to the Device Management Kit for internal and external usage
• Maintain and extend @ledgerhq/hw-transport-* libraries implementing communication protocols with Ledger hardware devices across channels (U2F, HID, WebUSB, Bluetooth) and platforms (Web, Node, Electron, React Native)
• Contribute to Ledger initiatives such as “Clear Sign all the things” and to the “My Ledger” section for firmware updates and app installation
• Collaborate closely with Firmware and Product teams
• Help the QA team to automate testing approaches
• Investigate and hunt bugs, including blockchain edge-case scenarios

Senior Software Engineer

Backend Engineer

About Ledger
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 will join the backend services team which is in charge of building services that power Ledger products.
The team is composed of passionate Engineers who believe in the benefits and strength of functional programming to develop robust and scalable platforms and APIs. Customer-focused, they are also eager to understand and implement product and business requirements.
We are convinced that being an engineer is also taking time to challenge, discuss and share what we are working on. A dynamic roll over each service allows every team member to get involved in many projects over time. We take time each month to have a dedicated knowledge-sharing meeting and participate actively in the Scala community (Meetups, Conferences, etc…)
What you’ll be doing
Build highly available, consistent, and performant services to power Ledger’s products
Integrate and consolidate off-chain data coming from several API sources
Leverage all the power of functional programming with Scala and the Typelevel stack
Maintain tools and services in a diverse stack (Scala, Python)
Conduct benchmarks to identify bottlenecks and optimize the overall performance of our services
Deliver a high-quality piece of software (Test it, Document it, Demonstrate it)
Design monitoring systems to detect unexpected failures/behavior
Use CI / CD to deploy and secure workflows

Product Manager – Blockchain, Embedded Applications

Typescript Software Engineer – Coin Integration, Internship

Engineering Manager – E Commerce

Hardware Security Researcher – Internship

Software Security Engineer, Internship

Software Engineer – Design System, Internship

Internship – Software Engineer

Senior FP&A Analyst

Institutional Sales Manager

Institutional Sales Manager

Institutional Sales Manager

Staff Software Engineer, E-commerce

Customer Support Agent

Senior Software Engineer

Scala Software Engineer