Staff Mechanical Engineer

Ledger is the world's leading platform for securing digital assets and Web3 infrastructure, trusted to protect over 20% of global crypto holdings. With headquarters in Paris and offices across Europe, North America and Asia, the company employs approximately 600 professionals building hardware wallets, custody solutions and ecosystem services for individuals and enterprises. Ledger's devices have been deployed to more than 7.5 million users across 200 countries.

The Devices team at Ledger is expanding its ambitious product roadmap for next-generation secure hardware. You will join as Staff Mechanical Engineer, reporting to the head of engineering, and lead all mechanical architecture decisions for the company's most critical product initiatives.

What you'll do

• Direct mechanical design and architecture strategy for new product generations, making complex trade-offs between component integration, antenna performance, PCB layout, connectors and structural requirements.
• Own CAD development in SolidWorks or equivalent tools, incorporating geometric dimensioning and tolerancing best practices across designs.
• Define, plan and validate reliability testing specifications, then drive manufacturing processes from mold design through tooling execution.
• Lead design-for-manufacturability initiatives and partner directly with contract manufacturers to ensure production readiness and quality delivery.
• Shape the color, material and finish strategy for Ledger devices, balancing product vision with industrial design and manufacturing constraints.
• Prototype, troubleshoot and debug hardware in laboratory settings; conduct teardown analysis and present technical choices and trade-offs to leadership.
• Build and mentor the mechanical engineering team, establishing best practices and developing junior engineers.
• Communicate across hardware, firmware and product teams to ensure coordinated program delivery.

What you'll bring

• Seven or more years designing consumer electronics, medical devices, wearables, telecom equipment or IoT products at scale.
• Proven track record shipping products successfully to market with demonstrated experience launching tools and processes at scale.
• Advanced CAD proficiency in SolidWorks, Creo or Onshape, with strong command of geometric dimensioning and tolerancing.
• Expert-level knowledge of tolerance analysis including arithmetic and statistical methods; ability to plan, conduct and review statistical process control studies.
• Hands-on troubleshooting capability in lab and production environments, combined with natural leadership skills and ability to inspire team growth.
• Comfort navigating fast-paced environments, uncertainty and ongoing change.
• Ability to work hybrid from Paris, up to three days per week remote.

Nice to have

• Genuine interest in and curiosity about the crypto and blockchain industry.

What they offer

• Hybrid flexibility with up to three remote workdays weekly.
• Health and life insurance coverage.
• Equity participation opportunities and country-specific financial benefits.
• Commuter allowance.
• Comprehensive learning and development programs tailored to individual growth.